Atoms can not be divided is the incorrect idea in Bohr’s understanding of the atom.
Bohr believed that electrons circled the nucleus in orbits. According to current atomic theory, electrons don't follow predetermined routes.
Bohr believed that electrons traveled in circular paths around the nucleus, but current theory suggests that the structure of atomic electrons is more to 3D standing waves.
Bohr improved on Rutherford's atomic model. The majority of the atom's mass is concentrated in its nucleus, which we now refer to as the center of the atom, and electrons surround the positive mass in a manner to a cloud. Bohr's use of the quantification energy to explain the model was his most important contribution. According to his theories, electrons circling the nucleus have quantized potential and kinetic energies.
The Heisenberg Uncertainty Principle is first violated by the Bohr model because it assumes that electrons have a known orbit and radius. The Bohr Model is less effective at drawing diagrams of larger atoms and gives an incorrect value for the ground state orbital angular momentum.
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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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If you make a Carbon (C) atom that has an overall charge of -1. How many protons does it have? How many electrons?=
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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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:
Which process allows liquid water on the surface to enter the atmosphere?
evaporation
condensation
sublimation
transpiration
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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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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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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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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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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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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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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What are the 4 parts of an atom, location and charge
Answer:
Electron,
Neutron,
Proton,
& the nucleus
Explanation:
Can I have brainliest? It would help me out, if not thanks anyways! Hope this helped and have a nice day!
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 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.
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
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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(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:
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
Which of the following would you expect to form a molecular compound?
Potassium and nitrogen
Sodium and bromine
Hydrogen and sulfur
Iron and oxygen
Answer:
Iron and oxygen
Potassium and nitrogen
how many moles of CaCo3 are there in an antacid tablet containing 0.512g CaCo3
The number of mole of CaCO₃ in antacid tablet containing 0.512 g of CaCO₃ is 5.12×10⁻³ mole
Description of moleThe mole of a substance is related to it's mass and molar mass according to the following equation:
Mole = mass / molar mass
How to determine the mole of CaCO₃From the question given above, the following data were obtained:
Mass of CaCO₃ = 0.512 gMolar mass of CaCO₃ = 40 + 12 + (3 × 16) = 40 + 12 + 48 = 100 g/mol Mole of CaCO₃ =?The number of mole in 0.512 g of CaCO₃ can be obtained as follow:
Mole = mass / molar mass
Mole of CaCO₃ = 0.512 / 100
Mole of CaCO₃ = 5.12×10⁻³ mole
Thus, 5.12×10⁻³ mole of CaCO₃ is present in the antacid tablet
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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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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.
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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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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How 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:
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" !
____
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.
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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