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This quiz contains 15 questions from a mix of 1 subtopics.

Calculate the total number of atoms in one mole of methane, CH4. 

6.02 x 1023

1.22 x 1024

2.41 x 1024

3.01 x 1024

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Calculate the relative molecular mass of PCl5.

77.5

100.5

208.5

332.5

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Define the term relative molecular mass.

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2

Calculate the relative formula mass of Fe2(SO4)3. 

Give your answer to 1 decimal place.

399.9

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What is the formula that links number of particles, number of moles and Avogadro's constant?

number of moles = Avodagro’s constant× number of particles
number of moles = Avodagro’s constant+ number of particles
number of moles =number of particlesAvodagro’s constant​
number of moles =Avodagro’s constantnumber of particles​

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Calculate the number of moles of H atoms in 1.806 x 1024 molecules of water, H2O. 

Avogadro's constant = 6.02 x 1023 mol-1

3.0 mol

1.5 mol

6.0 mol

5.0 mol

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Calculate the mass of 0.68 moles of sodium chloride, NaCl.

Give your answer to 1 decimal place.

39.8

g

g

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1

What is the formula that links mass, moles, and Mr?

mass = moles x Mr

moles = mass x Mr

mass = moles2

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What is the mass of 4 moles of nitrogen gas (N2)? 

112

g

g

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1

1.4 moles of an unknown compound is found to have a mass of 39.2 g.

Find the relative formula mass of the compound.

28

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0.040 moles of an unknown compound is found to have a mass of 3.28 g.

Find the relative formula mass of the compound.

82

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1

How many moles are there in 10.2 g of ammonia (NH3)?

0.6

mol

mol

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1

How many moles are there in 72 g of water (H2O)?

4

mol

mol

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1

What is the mass of 0.25 moles of carbon dioxide (CO2)?

11

g

g

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1

Sodium element symbol with atomic number 11 and atomic mass 23.

What is the mass of one mole of sodium (Na)?

23.0 g

11.0 g

34.0 g

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1