Answer:
Number of Energy Levels: 4
First Energy Level: 2
Second Energy Level: 8
Third Energy Level: 14
Fourth Energy Level: 2
Explanation:
Hope It Helps!
Answer:
4 energy levels
Explanation:
1st energy level = 2 electrons
2nd energy level = 8 electrons
3rd energy level = 8 electrons
4th energy level = 8 electrons
a) Give the reaction that occurs when 1 gram of sodium is added to 100 ml of ethanol.
b) This solution is then heated with 5 grams of 1-bromobutane. What is the maximum yield of the final product from this reaction?
What is the weighted average of lemonas if 80% are the GX model (4,000 lbs) and 20% are
the GXL model (5,000 lbs)?
Answer:
4200
Explanation:
4,000 * .8 + 5,000 * .2
The weighted average of lemonas with 80% GX model and 20 % GXL model is calculated using their mass percent and it is 4200.
What is weighted average?
The weighted average is different from the normal average we use in maths. Let's X and Y be two number and their average be x+ y/2. That is the arithmetic mean.
The weighted average of lemonas is similar to the atomic weight of an element calculated from ist two isotopes where, the percentage abundance in earth and the mass of isotopes if given the weighted average is calculated as follows:
weighted average = % abundance / 100 × mass of isotope 1 + % abundance / 100 × mass of isotope 2
In a similar way, the weighted average of lemonas of GX and GXL model is calculated as follows:
weighted average = ( 4000 lbs ×80/100 ) + ( 5000 lbs ×20/100)
= 4200 lbs.
Hence, the weighted average of lemonas if 80% are the GX model (4,000 lbs) and 20% are the GXL model is 4200 lbs.
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you are given an unknown liquid and asked to determine its identity. You can measure only one physical property. you decide to heat the liquid. You record that the liquid turns vapor at 100c. this demonstrates which physical property. A. melting point B. boiling point C. ability to conduct electricity D. malleability
Answer:
b. boiling point
Explanation:
Obtain and Communicate Information 1. SEP Obtain Scientific Information Conduct research to learn about the history of atomic models and the scientists who developed the models. Identify any experimental evidence and reasoning that supported each model. I
Answer:
Sorry I don't know.
Explanation:
I'm in 8th grade.
whats a ring of fire
fire in a circle
Explanation:
bc
Someone answer these both for me
Answer:
a b
Explanation:
I think so take it with a grain of salt
Land can also be called
A) Money and/or profit
B) Natural Resources
C) Human Resources
Answer:
B) Natural resource
Explanation:
Answer:
B
Explanation:
Because it is always there
3.7x10^45 molecules of hydrogen gas = how many grams of hydrogen gas
Since we weren't given the moles of hydrogen, we have to find it. However, we can do it all in one step if we set up the equation correctly.
Since Mass = moles × molar mass
& Moles = #molecules ÷ Avogadro's Number
∴ mass = (#molecules ÷ Avogadro's Number) × molar mass
= (3.7 × 10⁴⁵ mcules ÷ (6.022 × 10²³ mcules/mole)) × 1.008 g/mol)
= 6.19 × 10²¹ g
Find the mass of iron that has volume of 111 ml.
Answer:8
842.46 or to the next whole number
Explanation:
just multiply the mass of iron with the volume mL you have.
The mass of the iron whose volume and density are 111 ml and 7.847 g/cm³ respectively is 871.01 grams.
Which term is equivalent to product of density and volume?
The product of density and volume of a substance represents its mass. Mathematically -
M = V x ρ
where -
ρ - density
M - mass
V - volume
Given is iron in liquid form. It occupies a total volume of 111 ml.
The mass of liquid iron can be calculated using -
M = V x ρ
Volume of iron [V] = 111 ml = 111 cm³.
Density of iron [ρ] = 7.847 g/cm³
Therefore, we can write -
M = 7.847 x 111
M = 871.01 grams
Therefore, the mass of the iron whose volume and density are 111 ml and 7.847 g/cm³ respectively is 871.01 grams.
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A high pressure system generally indicates?
Question 9 options:
tornadoes
rain
fair weather
an immiscible mixture that is not composed oil and water
Answer:
"like-dissolves-like"
Any polarized molecule will not be soluble in a mixture of non-polarized molecules. Also, Acids and Bases mix with one another but not into neutral compounds. Organic molecules also do not mix with non-organic or aqueous solutions (like those without neutral pH)
Explanation:
How do I know if a reaction is spontainous or not?
Answer:
i dont care to you
Explanation:
cause you are tuyo
the answer is this
Energy is released into the cells by __________. A) Golgi bodies B) mitochondria C) vesicles D) lysosomes
Answer:
B) mitochondria
Explanation:
Use metric and U.S. conversion factors to solve the problem.
Question - If a student is 175 cm tall, how tall is the student in meters?
Explanation:
100cm = 1m
1cm=1/100 m
175cm = 175/100 m = 1.75m.
hope this helps you.
If a student is 175 cm tall, then according to the metric system the same student is 1.75 m tall.
What is a Metric system?A metric system may be defined as a type of system that significantly weighs and measures the mass and distance respectively in which the meter is the unit of length and the kilogram is the unit of weight.
A metric system is a standard system of measurement which utilizes the meter, liter, and gram as base units of length for distance, capacity for volume, weight for mass, etc.
According to the question, the height of a student in cm = 175 cm.
Then, from the general conversion rule,
1 meter = 100 cm.
1 cm = 1/100 meter.
175 cm. = 175/100 = 1.75 meters.
Therefore, if a student is 175 cm tall, then according to the metric system the same student is 1.75 m tall.
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A HOMOGENEOUS LIQUID THAT CANNOT BE SEPARATED INTO ITS COMPONENTS BY DISTILLATION BUT CAN BE DECOMPOSED BY ELECTROLYSIS IS CLASSIFIED AS A/AN _______________.
ELEMENT
SUBSTANCE
COMPOUND
SOLUTION
Answer:
ELEMENTS
Explanation:
CUZ AN A
ELEMENT IS A GROUP OF ATOMS THAT CANNOT BE BROKEN DOWN BY ANY CHEMICAL OR PHYSICAL MEAN
Please tell me the answer I will mark you brainliest so please
Answer:
A human cell is best described as typical animal cell.
Which substance tends to form anions when bonding with other elements?
sodium
oxygen
argon
calcium
Answer:
B) Oxygen
Explanation:
i just took the test.
Any species that contain negative charge over it called anion. Out of sodium, oxygen, argon and calcium, oxygen is the only element that can form anion. So option B is correct option.
What are non metals?Non metals are the element that have property to gain electron. When any element gain electron then element attain negative charge and that element is called anion.
In our question sodium, argon belongs to metals category and these lie on the left side of the periodic table. Metals are meant to release electron and hence become cation.
Argon is non metal but it is a noble gas which has property to not to react as its octet is complete. Thus the only element that is non metal here is Oxygen that forms anion. Its oxidation state is -2. Thus option b is correct option
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Four students each measured the mass of 1.43g sample four times
Answer:
look up 4 divided by 1.43
In the chemical formula for ammonia, NH3 , what does the subscript 3 represent?
the number of ammonia molecules that will bond together
the number of nitrogen atoms in each molecule of ammonia
the number of hydrogen atoms in each molecule of ammonia
the number of nitrogen and hydrogen atoms in each molecule of ammonia
To see the number of atoms of an element in a given molecule we need to multiply stoichiometry to the number that is written on the foot of the element that is stoichiometry. The correct option is option C.
What is atom?Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided. Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit.
In the nucleus, proton and neutron are present. Electron has -1 charge while proton has +1 charge. Neutron is neutral that is it has no charge. So overall the charge of nucleus is due to only proton, not by neutron.
In the given molecule NH₃, the subscript 3 that is written on the foot of element represents the number of hydrogen atoms in each molecule of ammonia.
Therefore, the correct option is option C.
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10. A balloon is blown up to a volume of 18 L at a pressure of 1.0 atm and
298 K. What would the pressure inside the balloon be when its volume
becomes 4.0 L and its temperature is 239 K?*
Answer:
3.6 atm
Explanation:
10. A balloon is blown up to a volume of 18 L at a pressure of 1.0 atm and
298 K. What would the pressure inside the balloon be when its volume
becomes 4.0 L and its temperature is 239 K?*
PV/T = P'V'/T'
(18 X 1)/298 =(P' X 4)/239
so
P' = (18 X 239)/(298 X 4)= 3.6 atm
P'=(18 X 239)/(298 x 4) =
I need help.
It measures 10 cm x 5 cm x 2 cm and has mass of 1,930g. What is the density of the gold bar?
what could cause a population of deer to decrease?
Explanation:
more predators, less deers. also starvation, and diseases.
the _____ of an object is where the object is in relation to another object or points of reference. A motion B force C gravity D position
d position
position is the reference for the points of the object
pls help i need the Formula
how can you calculate the number of electrons present in a shell? pls help!!! will give brainliest
Answer:
The maximum number of electrons present in a particular shell is calculated by the formula 2n2, where “n” represents the shell number. For instance, K shell is the first shell and it can hold up to 2(1)2 = 2 electrons. Similarly, L shell is the second shell and it can hold up to 2(2).
7. Calculate the net charge of the following atoms.
Atom A: has 6 protons and 4 electrons
Atom B: has 9 protons and 9 electrons
Atom C: has 10 protons and 14 electrons
Atom D: has 33 protons and 29 electrons
Answer:
any atom that contains six protons is the element carbon and has the atomic number 6, regardless of how many neutrons or electrons it may have.
Explanation:
Answer:
Atom A: +2 Atom B: 0 Atom C: -4 Atom D: +4
Explanation:
We know that protons have a positive charge and electrons have a negative charge. Therefore, we will treat the electrons as a negative number. The net charge is the sum of electrons and protons.
Atom A = 6 + (-4)
because electrons as negative.
Net charge = +2
Atom B = 9 + (-9)
Net charge = 0, or neutral
Atom C = 10 + (-14)
Net charge = -4
Atom D = 33 + (-29)
Net charge = +4
Please tel me the answer I will mark you brainliest
2 is the answer
Explanation:
the other answers are all included in the cell theory
1. Calculate the energy in joules of a photon of electromagnetic radiation whose frequency is 2.76×1014 s−1 .
Express your answer with the appropriate units.
2. Calculate the energy in joules of a photon of radiation whose wavelength is 418 nm
Express your answer with the appropriate units.
3. What wavelength (in meters) of radiation has photons of energy 6.05×10−19 J ?
Express your answer with the appropriate units.
Answer: 41.5
Explanation:
Ned help with this question
Answer:
135.6
Explanation:
12 * 11.3 = 135.6
To find the mass you have to multiply the density and volume together
If you already have the mass you divide the mass by either the density or volume
Explain what the force of Gravity on each planet depends on.
Answer:
It depends on the size and mass of the object. Look at Jupiter. It has a higher gravitational pull because it has a higher mass
which taste sensation is produced by amino acids such as aspartic acid and glutamic acid?
Answer:
Savory. Savory taste is caused by amino acids. It's commonly brought on by aspartic acid or glutamic acid. Occasionally, savory is also called “umami” or “meaty.”
Explanation:
Hope this helps.
