A sample of carbon-12 has a mass of 6.00 g. How many atoms of carbon-12 are in the sample?

Answers

Answer 1

Answer:

The number of atoms in the 6 grams of carbon is equal to 1.506 × 10²³.

What is Avogadro's number?

The Avogadro number is the proportionality factor which is the number of particles such as atoms, molecules, or ions in one mole of a substance.

Avogadro's number possesses a numeric value of 6.022 × 10²³ reciprocal moles. Avogadro's constant is named by Stanislao Cannizzaro after the scientist Amedeo Avogadro.

Given, the mass of the carbon in sample = 6 g

The number of atoms of one mole of carbon = 6.022 × 10²³

The atomic mass of one mole of carbon = 12 g

It means 12 g of the carbon has atoms = 6.022 × 10²³ carbon atoms

Then 6 grams of carbon will have atoms = (6/12) × 6.022 × 10²³

= 3.011 × 10²³ carbon atoms

Therefore, the atoms of carbon in 6 g of sample of carbon are 3.011 × 10²³ atoms.

Learn more about Avogadro's number, here:

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Answer 2

Answer: Convert grams to moles [grams/molar mass] ~ Moles
Convert moles to atoms [moles * 6.02 x 10^23] = Atoms
Half of 6.02 x 10^23 is 3.01 x 10^23 so here is our answer.

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It's Peggy Sue's birthday and she's about to blow out the candles on her cake. Brother Roger stops the party when he shouts: "Look at that! Chemical and physical changes taking places on your birthday cake!"How would you respond to Roger? A) Roger is incorrect. The melting wax is a physical change but there is no chemical change taking place. B) Roger is correct. Lighting the match is a chemical change and burning the candles is a physical change. C) Roger is correct. The melting wax is a physical change and the burning candle wick is a chemical change. D) Roger is incorrect. Only a chemical change is taking place as evidenced by the light and heat of the burning candles.

When electrons are added to the outermost shell of a carbon atom, it forms?

Answers

correct, it forms an ANION.....

Anion in largest form

The following balanced equation shows the decomposition of water (H2O). According to the equation, how many oxygen atoms are in the reactants? 2 H2O 2H2 + O2

Answers

Answer : The number of oxygen atoms present on reactant side are, 4

Explanation :

Balanced chemical reaction : It is defined as the number of atoms of individual elements present on reactant side must be equal to the product side.

Decomposition reaction : It is defined as the reaction in which the larger molecule decomposes to give two or more smaller molecules as a product.

The given balanced chemical reaction is,

$2H_2O\rightarrow 2H_2+O_2$

From the balanced chemical reaction we conclude that, there 4 atoms of hydrogen and 2 atoms of oxygen present on both reactant side and product side.

Hence, the number of oxygen atoms present on reactant side are, 4

2 atoms of oxygen are reactants.

What is the Charles and boyles law?

Answers

The Charles and Boyles law,is a gas law that says that the pressure and volume of a gas have an inverse relationship, when temperature is held constant. If you increase the pressure 10 times, the volume will decrease 10 times. You have a fixed mass of gas, so n (the number of moles) is constant. R is always constant - it is called the gas constant. Boyle's Law demands that temperature is constant as well.

a hydrogen atom has one proton, two neutrons, and no electrons. Is this atom an ion? Explain your answer.

Answers

An atom is a neutral species. Hence, it must have same number of electrons and protons. On other hand, ions have charge. Hence, number of protons and electrons are not same.

In present case, hydrogen has one proton, two neutrons, and no electrons. This signifies that overall charge of species is +1. Hence, it is an ion.

yes this is an ion because an ion is defined as an element that has gained or lost electrons. There should be 1 electron is Hydrogen but since there aren't any that means that it is an ion which is commonly written as H^+.

NEED HELP AS SOON AS POSSIBLE!7. How many atoms are present in a 6.00 g sample of silver?
a. 1.07 x 10^-1 atoms
b. 6.47 x 10^2 atoms
c. 3.35 x 10^22 atoms
d. 3.61 x 10^24 atoms

8. How many atoms are present in 2.0 x 10^6 mol of carbon?
a. 3.3 x 10^-18 atoms
b. 4.0 x 10^-17 atoms
c. 1.0 x 10^29 atoms
d. 1.2 x 10^30 atoms

9. what mass is present in sample of AgNO3 containing 3.14 x 10^19 formula units?
a. 5.21 x 10^-5 g
b. 8.86 x 10^-3 g
c. 1.13 x 10^2 g
d. 1.92 x 10^4 g

10. How many molecules are present in 36.6 L of SO2 gas at STP?
a. 1.36 x 10^-21 molecules
b. 1.63 x 10^0 molecules
c. 1.54 x 10^22 molecules
d. 9.84 x 10^23 molecules

Answers

I got :
  7) C
  8) D
  9) B
10) D

The decimal difference in my calculations may be due to my rounding off or my use of the exact values in some cases.
Note: Mr - Molar Mass
L - Avogadro's Constant

How do you calculate the number of moles when given the number of particles?

Answers

Answer:

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