Answer:
378.196
Explanation:
Multiply the length value by 1.609.
235 miles = 378.196 kilometers
Answer:
378.196 Kilometers
Explanation:
For an approximate result, multiply the length value by 1.609.
235*1.609 = about 378.2
1. (1 point) The Sherlock Holmes story, the Sign of the Four, involves the Great Mogul
diamond. Before cutting, its weight was 787 carats. 1 carat = 0.200 gram. Assume that
the diamond is pure carbon. Calculate the number of moles of carbon in the uncut Great
Mogul diamond. Also calculate the number of carbon atoms.
no. of moles in uncut diamond are 13.11 mol and number of Carbon atoms are 78.94 × 10^23.
The atoms of diamond are grouped in a crystal structure known as diamond cubic, and it is a solid form of the element carbon. The chemically stable form of carbon is another solid form of carbon known as graphite at ambient temperature and pressure, but diamond transforms to it very slowly.We are aware that a mole is a unit of measurement for a substance that contains precisely the same number of atoms as 12 g of C12.The mass of a substance is given in this case. We are aware that the diamond is Carbon's allotrope.
weight of diamond before cutting = 787 carats
1 carat. = 0.200 gram
therefore, 787 carats. = 787 × 0.200
= 157.4 gram
To calculate the number of moles equation is
Number of moles =Mass / Molar mass
Molar mass of carbon Is 12g/mol
therefore, no. of moles = 157.4 / 12 = 13.11 mol
We know that 1 mol of any substance contains 6.022×10^23 atoms.
Here we have 13.11 mol of carbon. thus,
No. of Carbon atoms = 13.11 × (6.022×10^23 / 1 mol) = 78.94 × 10^23
Thus, 13.11 mol of diamond contain 78.94 × 10^23 number of Carbon atoms.
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the physical properties of minerals result from their ____?
Answer: Internalized Crystal Structure
Explanation:
"The exact and unique arrangement of atoms, ions or ionic groups is the characteristic feature of each crystallized mineral."
- S.K. Haldar & Josip Tisljar, authors of Mineralogy and Petrology
A mineral's unique and specific crystal structure determines the physical properties such as color, hardness, density, luster, crystal form, cleavage and fracture.
AgNo3(aq) +KSCN(aq) = KNO3(aq) + AgSCN(s) what is the equilibrium constan
The equilibrium constant is K=[KNO3]/[AgNO3][KSCN]
The equilibrium constant is defined as the ratio of the concentration of products upon reactants.The species present in solid phase are taken as unity.Substituting the values, we getK=[KNO3][AgSCN]/AgNO3][KSCN]K=[KNO3]×1/[AgNO3][KSCN]k=[KNO3]/[AgNO3][KSCN]The ratio of reactant to product amounts that is used to predict chemical behavior is the definition of the equilibrium constant for a chemical process. The rate constants are constant at a certain temperature.The value of a chemical reaction's reaction quotient at chemical equilibrium, a condition that a dynamic chemical system approaches is the equilibrium constant for that reaction when enough time has passed and at which its composition shows no evident tendency to change further.The equilibrium constant is independent of the initial analytical concentrations of the species of the reactant and product in the mixture given a certain set of reaction conditions.As a result, the composition of a system at equilibrium may be calculated from its starting composition using known equilibrium constant values. However, factors affecting the reaction such as temperature, solvent, and ionic strength may all affect the equilibrium constant's value.To learn more about equilibrium constant visit:
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A carpet sells for $24.99 per square yard. What is the price of the carpet per square meter? How much will it cost to carpet an area of 1365 ft2?
The carpet sells for $24.99 per square yard, so the cost of the carpet per square meter area is $40,799.85.
What is the carpet area?The carpet area is that space in your home, which can be used for laying a carpet. It includes the thickness of the internal wall, but excludes the balcony or terrace.
Given that the price of the carpet is $24.99 per square yard, in the first step to convert the square yard to a square meter. 1 square yard = 0.836 square meters now in the second step, calculate the cost per square meter based on the relation in the above step we can write,0.836 square meters of carpet costs $24.99.
Therefore, the cost of 1 square meter of the carpet would cost of the carpet multiplied by one square meter and then divided by the unit in one square yard. From this, the price of the carpet per square meter is known. Price of the carpet per square meter = $24.99 * 1 sq meter/0.836 sq meter price of the carpet per square meter= $29.89. Now we have to find the Cost of the carpet area.
Cost of carpet area = $24.99* 1365 = $40,799.85.
Thus, the Cost of carpet area is $40,799.85.
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How many moles water contain 1.51x10^24 molecules of water
2.507 moles of water is present in 1.51 x 10^24 molecules of water
The mole is the amount of substance of a system which contains as many elementary entities as there are atoms in 0.012 kilogram of carbon 12
Every mole contain a certain number of atoms which is the Avogadro's number
Avogadro's number states that each mole of every compound contains
6.023x 10^23 atoms of molecules
It is given to us to find out how many moles of water is present in 1.51 x 10^24
The number of moles of water present = 1.51 x 10^24 / 6.023 x 10^23
=2.507 moles
Hence, 2.507 moles of water is present in 1.51 x 10^24 molecules of water
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what is the mass number of iron with 19 neutrons?
Answer:
Explanation:
The mass number of iron is 55.845amu. The mass number is equal to the number of protons added to he number of neutrons in an atom. Each neutron or proton has a mass of about 1amu.Thus we say 55.84500 atomic mass units * 19 =
1 061.055 atomic mass units
The 2017 U.S. gross domestic product (GDP) was valued at 19, 390, 604, 000 dollars. How many Gateway Arch-height stacks of
half dollars are needed to match the GDP in value?
Therefore, we require roughly 589,008.49 Empire State building-height stacks of dimes (856,418,343.3 / 1,454).
A stack of 100 dimes is about 5.3 inches tall. $10 is equal to 100 dimes. Therefore, 1,939,060,400 stacks of 100 dimes are required. This astounding number of dimes is 856,418,343.3 feet tall (1,939,060,400 x 5.3/12).
The Empire States Building is 1,454 feet tall when the antenna is added. Therefore, we require roughly 589,008.49 Empire State building-height stacks of dimes (856,418,343.3 / 1,454). Compared to 2016, when it climbed by 2.8 percent, or $503.8 billion, current-dollar GDP increased by 4.1 percent, or $766.1 billion, to a level of $19,390.6 billion in 2017. In 2021, the current-dollar GDP reached a level of $22.99 trillion, up 10.0% or $2.10 trillion.
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a 24.37mol of gas occupied 5.32ml vessel. what mole of the gas should be removed to get a volume of 2.56ml?
Mole of the gas should be removed to get a volume of 2.56ml is 10.26 mol.
Equation :Given data,
Volume₁ = 5.32ml
number of moles at 5.32ml n₁ = 24.37mol
Molarity = ?
Volume₂ = 2.56ml
number of moles = ?
First to find molarity of gas using formula,
M = nV
where,
M is molarity
n is numbers of mole
V is volume
So, putting the values of volume₁,
M = 24.37mol x 5.32ml
M = 129.65 mol/ml
So again to get moles of second volume in same formula we have,
M = nV
So,
n = M / V
n₂ = 129.65 / 2.56ml
n = 50.64mol
So,
n₂ - n₁ = 50.64mol - 24.37mol
n = 26.27
So,
mole of the gas removed = 26.27 / 2.56
mole of the gas removed = 10.26mol
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If the atom is assumed to be a sphere, what is the volume in cm^3 of a single Au atom?
Answer:
The equation for a volume of a sphere is V= (4/3)πr3
The above equations says we need to find the radius of our sphere. According to https://www.ptable.com/ the radius of a gold atom is 144 pm.
The questions wants the answer to be in cm3 which means we need to convert picometers into centimeters. 1cm= 1010pm
144pm x (1cm/1010pm) = 1.44 x 10-8cm
Now we plug the radius of the gold atom into the volume equation.
V= (4/3)π(1.44x 10-8cm)3 -----> Answer= 1.25x10-23 cm3
HOPE IT'S HELPS YOUHow many GRAMS of aluminum sulfate can be made from 1.18 grams of aluminum
Answer:
Do a quick conversion: 1 moles Aluminium Sulfate = 342.150876 gram using the molecular weight calculator and the molar mass of Al2(SO4)3.
Explanation:
The U.S. Environmental Protection Agency (EPA) sets limits on
healthful levels of air pollutants. The maximum level that the EPA
considers safe for lead air pollution is 1.5 μg/m³
By applying Avogadro's constant, the number of lead atoms present in your lungs is equal to 2.49 × 10¹³ atoms of lead.
What is a conversion factor?A conversion factor can be defined as a number that is typically used to convert (change) a number in one (1) set of units to another, either by dividing or multiplying.
Generally speaking, an appropriate conversion factor to an equal value must be used when it is necessary to perform any mathematical conversion.
Conversion:
1.5 μg lead = 1 m³ of air.1 m³ = 1000 Liters (L)1 mole of lead = 207.2 grams of lead.1 gram (g) = 10⁶ microgram (μg).1 mole of lead = 6.022 × 10²³ lead atoms.Next, we would convert the volume of lungs in liters to meter cube (m³):
Volume of lungs = 5.6/1000
Volume of lungs = 5.6 × 10⁻³ m³.
Assuming the whole volume of lungs is filled with air, the number of lead atoms present is given by:
Number of lead atoms = 5.6 × 10⁻³ × 1.5
Number of lead atoms = 8.55 × 10⁻³ μg of lead.
Next, we would convert the mass of lead into moles of lead as follows:
Moles of lead = 8.55 × 10⁻³ × 1/207.2 × 1/10⁶
Moles of lead = 8.55 × 10⁻³/(207.2 × 10⁶)
Moles of lead = 4.13 × 10⁻¹¹ mole of lead.
Finally, we would determine number of lead atoms present by using Avogadro's constant:
Number of lead atoms = 4.13 × 10⁻¹¹ × 6.022 × 10²³
Number of lead atoms = 2.49 × 10¹³ atoms of lead.
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Complete Question:
The U. S. Environmental Protection Agency (EPA) sets limits on healthful levels of air pollutants. The maximum level that the EPA considers safe for lead air pollution is 1.5 μg/m³. If your lungs were filled with air containing this level of lead, how many lead atoms would be in your lungs? (Assume a total lung volume of 5.60 L.)
An element has 3 naturally occurring isotopes. Isotope 1 has a relative
abundance of 12.99% and isotope 2 has a relative abundance of 40.49%.
What is the relative abundance of isotope 3?
The correct answer for relative abundance of isotope 3 is 46.52%.
Let's consider element X, which has 3 isotopes: isotope 1 with a relative abundance of 12.99%, isotope 2 with a relative abundance of 40.49% and isotope with an unknown relative abundance.
Assuming there are only 3 isotopes of element X, we know that the sum of the relative abundances of them is equal to 100%. The relative abundance of isotope 3is:
ab(isotope 1) + ab(isoptope 2) + ab (isotope 3) = 100 %
isotope 3 = 100% - (12.99% + 40.99 % )
isotope 3 = 46.52 %
Element X has 3 isotopes: isotope 1 with a relative abundance of 12.99%, isoptope 2 with a relative abundance of 40.49% and isotope 3 with a relative abundance of 46.52%.
The percentage of atoms with a specific atomic mass found in a naturally occurring sample of an element is known as its relative abundance.
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Determine the number of protons and electrons in
each lon
Al3+
Enter your answers as integers separated by a comma.
#p¹, #e=
Number of protons in Al^3+ are 13 and number of electrons are 10.
Every atom has a proton, a subatomic particle, in its nucleus. The particle is electrically charged positively.A negatively charged subatomic particle known as an electron can either be free or attached to an atom.The number of protons in the nucleus is equal to the atomic number.The number of electrons in a neutral atom is equal to the number of protons.Here aluminium is not an atom. it is presented as ion.
Atomic number of aluminium is 13
therefore, number of proton = 13
This aluminium ion Al^3+ has a positive charge of three. Aluminum, which has an atomic number of 13, has lost three electrons when it has a positive charge of 3.
therefore number of electrons in aluminium ion = 13 - 3 = 10
+3 charge will not affect the number of proton. thus number of proton will remain same as atomic number of aluminium.
Therefore, number of proton in aluminium ion are 13 and number of electrons in aluminium ion are 10.
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What new combined branch of study was developed from the
study of matter within living systems?
According to the research, the correct option is Biochemistry. It is a new combined branch of study that was developed from the study of matter within living systems.
What is Biochemistry?It is an integrating science or scientific discipline that studies at the molecular level the characteristics and functions of the chemical components of living beings.
In this sense, it is responsible for the study of substances such as proteins, lipids, carbohydrates that are present in living organisms and the fundamental chemical reactions for vital processes.
Therefore, we can conclude that according to the research, the correct option is Biochemistry. It is a new combined branch of study that was developed from the study of matter within living systems.
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The metallic radius of a sodium atom is 186 pm. What is the volume of a sodium atom in cubic meters? Assume the atom is a perfect sphere. The volume of a sphere is calculated from (4/3)π×r3
The volume of the sodium atom is 2.7 * 10^-29 cubic meters
What is the volume of the sodium atom?Let us recall that the volume is the an atom could be approximated to be the same as the volume of a sphere where the atom has been taken to be a sphere.
We know that volume of a sphere = (4/3)π×r3 where r = radius of the sphere. Having known that we convert the radium into meters and we have 186 * 10^-12 m
Thus;
Volume = 4/3 * 3.142 * ( 186 * 10^-12)^3
Volume = 2.7 * 10^-29 cubic meters
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A pediatric patient is prescribed Tamiflu in the form of a 6.000 mg/mL oral
suspension. The medication is given in 2
doses per day, in 60.00 mg/dose
How many mL are needed for 5 days treatment?
100 mL are needed for 5 days treatment.
Tamiflu is prescribed as a 6.000 mg tablet, oral suspension of mg/mL. The medication is administered twice daily, at a dose of 60.00 mg.
As a result,
the total amount of tamiflu administered in a day is equal to 60.00 × 2 mg, which equals 120.00 mg.
Tamiflu dosage required in total for five days is five.
=5× 120.00 mg
= 600.00 mg
Considering that 1 mL contains 6,000 mg, 100 mL is required for 5 days.
Another option is 600.00 mg in (1 mL× 600.00 mg/6.000 mg).
= 100 mL are needed for 5 days treatment
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Give the meaning of the term electronegativity
Answer:
Electronegativity is the power of an atom (in a molecule) to attract electrons to itself. It increases from left to right in the periodic table.
Billy prepares four (4) different concentrations of solutions. Which solution is
the most concentrated?
A. 35 g of salt in 100 ml of water
B. 40 g of salt in 100 ml of water
C. 50 g of salt in 100 ml of water
D. 75 g of salt in 100 ml of water
Answer: [D]: " 75 g of salt in 100 mL of water. "
____
Explanation:
By looking at the answer choices—we can tell that all 4 (four) values for the "solvent"—[in this case: "100 mL of water".].
Note: As a general rule—and at this point in our problem—
The answer would be:
The solution with the most 'concentration' of solute—per the same volume of solvent—would be the most 'concentrated' solution—
would be Answer choice: [D]: " 75 g of salt in 100 mL of water."
Note: Answer Choice: [D]—has the most solute (grams of salt)—compared with the 'other values' given in the 'other' answer choices.
→ Specifically, refer to the other answer choices:
→ " [D: 75 g] > [C: 50 g] > [B: 40 g] > [A: 35 g ] ".
____
Wishing you well in your academic pursuits—and within the "Brainly" Community" !
____
Can somebody please help me
Answer:
a
Explanation:
because this could be down to coincidences whereas the others could be explained with scientific experiments
Answer:
A
Explanation:
Must be testable - A is not
How many moles are in 9.27 x 10^22 atoms of silicon
The number of moles are in 9.27 x [tex]10^{22}[/tex] atoms of silicon is 0.153
The number of atoms is given as follows;
Atoms= nxNa
9.27x[tex]10^{22}[/tex]=nx6.022x[tex]10^{23}[/tex]
n=9.27x[tex]10^{22}[/tex]/6.022x[tex]10^{23}[/tex]
n=1.53x[tex]10^{-1}[/tex]
n=0.153
The number of moles n, is 0.153
The International System of Units uses the mole (symbol: mol) as the unit of material quantity. The number of elementary entities of a certain substance are present in an item or sample is determined by the quantity of that material.The mole, symbol mol, is the unit of amount of substance.Mole is a standard scientific unit used to measure large quantities of very small entities such as atoms, molecules, ions, etc.To learn more about mole visit:
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Question 2 of 10
Which chemical equation is balanced?
A. CO₂ + H₂O → H₂CO₂
B. K+ H₂O → K₂O + H₂
C. CaO2 + HCl → CaCl₂ + H₂O
OD. MgO + 2HCl → MgCl₂ + H₂O
The equation MgO + 2HCl → MgCl₂ + H₂O is a balanced equation.
A balanced chemical equation contains equal number of atoms on both sides of the equation.The equation is MgO + 2HCl → MgCl₂ + H₂O which contains 1 atom of Mg, 2 atoms of chlorine, 2 atoms of chlorine, 1 atom of oxygen on both reactants and products sides.So the equation is balanced.An equation for a chemical reaction is said to be balanced if both the reactants and the products have the same number of atoms and total charge for each component of the reaction. In other words, both sides of the reaction have equal amounts of mass and charge.It follows law of conservation of mass.Mass is neither created nor destroyed rather it can be transferred from one form to another.Learn more about balanced equation at:
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hi, this is a continuation of another question-
11. 60 subjects watch a videotaped re-enactment of a robbery that happened last week at a local bank, Half of the subjects were questioned by a police investigator to recall the event, while the other half were hypnotized and then questioned.
IV:
DV:
Hyp:
A constant:
The Control:
12. An automobile manufacturer carried out a research to know how much bright, brake lights should be kept in order to minimize the time required by the driver of a following car to realize that the car in front is stopping and to hit the brakes.
IV:
DV:
Hyp:
A constant:
The Control:
13. There will be a difference in graduation rates of at-risk high-school seniors who participate in a program as opposed to at-risk high-school seniors who do not participate in the program.
IV:
DV:
Hyp:
A constant:
The Control:
14. You want to test a new drug that supposedly prevents sneezing in people allergic to grass.
IV:
DV:
Hyp:
A constant:
The Control:
15. A soap manufacturer wants to prove that their detergent works better to remove tough stains.
IV:
DV:
Hyp:
A constant:
The Control:
16. Measuring the growth rate of plants under full sunlight for 8 hours a day versus plants that only have 4 hours of full sunlight per day
IV:
DV:
Hyp:
A constant:
The Control:
17. How much water flows through a faucet at different openings?
IV:
DV:
Hyp:
A constant:
The Control:
18. Does heating a cup of water allow it to dissolve more sugar?
IV:
DV:
Hyp:
A constant:
The Control:
19. How can you tell time using a candle?
IV:
DV:
Hyp:
A constant:
The Control:
20. Do bicycle fenders keep the rider dry when riding through a puddle?
IV:
DV:
Hyp:
A constant:
The Control:
The parts of the experiment, including the independent variable, (IV), dependent variable, (DV), hypothesis, (hyp), constant and control are;
11. IV: A robbery
DV: Ability to recall
hyp: Hypnotism affects memory
A constant: Watching
Control: Subjects that where not hypnotized
12. IV: Lights brightness
DV: response time
Hyp: Brightness lights affect the response time
A constant: The car's speed
The Control: Driving without break lights
13. IV: School seniors attendance of the program
DV: Graduation rate
Hyp: Graduation rate is affected by the attendance of the program
A constant: Number and quality of examination questions
The control: At–risk high–school seniors that do not attend the program
14. The new drug
DV: Sneezing
Hyp: New drug reduces sneezing
A constant: The type of grass
The control: A placebo
15. IV: The detergent
DV: Toughness of the stain removed
Hyp: The detergent is effective in removing tough stains
A constant: The amount of detergent
The control: Washing without detergent
16. IV: Exposure duration
DV: Growth
Hyp: Growth depends duration of exposure
A constant: Plant type
The control: 8 hours of sunlight exposure for the plant in the control
17. IV: Water
DV: Amount flowing
Hyp: Flow rate depends on the opening
A constant: The relative location of the openings
The control: Water flowing into the pipe
18. IV: Heat
DV: Amount of solute dissolved
Hyp: A hot cup of water dissolves more sugar
A constant: The quantity of water used
The control: Sugar dissolved in the cup of water without heating.
19. IV: Timed
DV: position of candle's shadow
Hyp: Length and position of the candle's shadow depends on the time of the day.
The constant: Using a fixed length of the candle
The control: A candle placed in the shade
20. IV: Riding through a puddle
DV: Rider remaining dry or not dry
Hyp: Fenders keeps riders dry
A constant: The path
The control: Riding without a fender
What are the parts of the experiments?The independent variable in an experiment is not affected by any other variable, it is also known as the input variable, which causes a change in the output variable or dependent variable.
The dependent variable is the variable that is being studied in the experiment.
An hypothesis is a proposition or proposal made on the basis of limited evidence.
A constant is a quantity that does not change or is kept on standby the researcher.
A control is used as a benchmark or reference or comparison point with the test results of the experiment
11. Independent variable, IV: The robbery that happened last week
Dependent variable, DV: Ability to recall the robbery incident
Hypothesis, hyp: That hypnotism affects memory recall
A constant: Watching the robbery video
Control: The 30 subjects that where not hypnotized
12. IV: The brightness of break lights
DV: The time it takes the following car driver to hit the breaks
Hyp: The brightness of break lights affect the response time of following drivers
A constant: The speed of the cars
The Control: Driving without break lights
13. IV: At–risk high–school seniors
DV: Graduation rate
Hyp: The graduation rate is affected by the attendance of the program
A constant: Number and quality of examination questions
The control: At–risk high–school seniors that do not attend the program
14. IV: The new drug.
DV: Rate of sneezing in people allergic to grass
Hyp: The new drug reduces the rate of sneezing in people allergic to grass
A constant: The type of grass used in the experiment
The control: The administration of a placebo to people that are allergic
15. IV: The detergent
DV: Toughness of the stain removed
Hyp: The detergent is effective in removing tough stains
A constant: The amount of detergent applied
The control: Washing of stains without detergent
16. IV: The duration of exposure to sunlight
DV: The growth rate of the plants
Hyp: The growth rate depends on the duration of exposure to sunlight
A constant: The type of plant in the experiment
The control: Plants that have 8 hours of sunlight
17. IV: The amount of water flowing in the pipe
DV: Amount of water flowing from a faucet
Hyp: The amount of water flowing out depends on the opening
A constant: The relative location of the openings
The control: The water flowing into the pipe
18. IV: The heat applied to the sugar solution
DV: The amount of sugar dissolved in the solution
Hyp: A hot cup of water dissolves more sugar
A constant: The amount water in the cup
The control: The amount of sugar dissolved in the cup of water without heating.
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If you make a Carbon (C) atom that has an overall charge of -1. How many protons does it have? How many electrons?=
Three girls raced their model cars down a
40-meter track. Their times are in the table.
What was the average speed at which the
cars rolled down the track?
The average speed at which the cars rolled down the track 4.28 m/s
Average Speed is defined as Total Distance Traveled ÷ Total Time Taken . SI unit of average speed is meter per second ( m/s).
Average Speed = total distance traveled ÷ total time taken
we have , jessica's car travelled 40 m in 10 sec
kristi's car travelled 40 m in 20 sec
laticia's car travelled 40m in 8 sec
Average Speed = total distance traveled ÷ total time taken
so, = 40+40+40 ÷ 10+20+8
= 120÷28
= 4.28 m/s
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A gas is in a flexible container (volume can change but no gas can escape) at constant pressure. If 1 liter of gas at 300 K is cooled to 100 K (and assuming that it does not condense to a liquid!), what is the volume (in liters) of the gas at 100 K?
The volume of the gas at 100K If 1 liter of gas at 300 K is cooled to 100K is 0.33L.
How to calculate volume?The volume of a gas can be calculated using the following formula:
V1/T1 = V2/T2
Where;
V1 = initial volumeV2 = final volumeT1 = initial temperatureT2 = final temperatureAccording to this question, a gas is in a flexible container. If 1 liter of gas at 300K is cooled to 100K. The volume of the gas is calculated as follows:
1/300 = V2/100
100 × 1 = 300V2
100 = 300V2
V2 = 100/300
V2 = 0.33L
Therefore, the volume of the gas at 100K If 1 liter of gas at 300 K is cooled to 100K is 0.33L.
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Zootopia movie:
How does Judy Hopps discover Nick Wolf’s true intentions/con?
Answer:
Judy is determined to make the world a better place while breaking preconceptions about other species. Nick views Judy as a nuisance at first. He also mentions having noticed her canister of Fox repellent when they first met, leading him to believe her to be a bigoted individual, which he detests.
Explanation:
Two construction workers are attempting to pull a slab of concrete off of the ground. Each of the workers are pulling up
with a force of 225 N, while the slab of concrete applies a gravitational force of 400 N in the opposite direction, remaining
stationary.
If the pulling forces applied to the slab of concrete are assigned a positive value, what is the net force of the scenario, and
in which direction will the slab of concrete move?
(1 point)
O 50 N; the slab will move upward
O 175 N; the slab will move upward
O-175 N; the slab will remain stationary
O -50 N; the slab will remain stationary
If the pulling force of 225 N each is assigned a positive value, the net force of the scenario will be 50 N and the slab will move upward.
What is the net force?The net force acting on an object is the resultant force. It is the sum of all the forces acting on the object.
The forces acting on the slap concrete are three, namely:
The gravitational force of 400 NThe pulling force of 225 N by construction worker 1The pulling force of 225 N by construction worker 2These forces are acting in opposite directions. The gravitational force is acting downward while the pulling forces by the construction workers are acting upward.
Now, the pulling forces of the construction workers are assigned positive values. Since the gravitational force acts in opposition to the pulling forces, it means the gravitational force will be assigned a negative value.
Thus, the resultant force can be calculated as:
225 + 225 - 400 = 50 N
The resultant force is 50 N and positive. This means the slab will move in an upward direction.
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11. A covalent bond between C and H is_____. It is called that,because electrons are shared_____ between these two atoms.C and H,are not________
12. An______ bond is formed when an electron is transferred from one atom to another.
The atom that loses an electron is called a(n)________and has
charge________.The
atom that gains an electron is called a(n)__________and has_______charge.
13. A hydrogen bond is formed between a H in one molecule and an________atom in
another molecule. The H can make an H-bond only if it is found in a_________covalent
bond, in its own molecule.
14. H-bonds give________
many of its special properties.
15. A van der Waals interaction is the__________type of bond. All molecules form these
bonds. These interactions become important when found in great numbers. The often help the
3D shape of large molecules such as________Or________.
11.) Non polar, equally, Charged.
12.) Ionic, Cation, Positive, anion, negative
13.) electronegative, Polar
14.) So
15. weak, HCl or N2
A covalent bond between C and H is Non Polar. It is called that,because electrons are shared Equally between these two atoms.C and H,are not Charged
12. An Ionic bond is formed when an electron is transferred from one atom to another.
The atom that loses an electron is called Cation and has charge positive. The
atom that gains an electron is called anion and has negative charge.
13. A hydrogen bond is formed between a H in one molecule and an Electronegative atom in
another molecule. The H can make an H-bond only if it is found in a Polar covalent
bond, in its own molecule.
H-bonds give So many of its special properties.
A van der Waals interaction is the Weak type of bond. All molecules form these
bonds. These interactions become important when found in great numbers. The often help the
3D shape of large molecules such as HCL or N2
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(Trial 1)
Convert mass to moles for both reactants. (round to 2 significant figures.)
2.50 g CuCl equals
moles
0.50 g Al equals
moles
DONE
Answer:
CuCl has 0.025 and Al has 0.018 moles
Answer:
.019 and .0093
Explanation:
How many atoms of nitrogen are there in one mole of nitrogen dioxide?
Express your answer in number of atoms to four significant figures.
Answer:
All objects in the universe are made up of atoms. The number of atoms that can make up even a small object make up an incredibly large and unfathomable number, on the order of 10231023 atoms. The mole measurement was created in order to more easily deal with the number of atoms in a given substance. One mole is equal to 6.022 × 10236.022 × 1023 atoms.
