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This quiz contains 8 questions from a mix of 1 subtopics.

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

mass = moles2

mass = moles x Mr

moles = mass x Mr

0

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1

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


What is the mass of 1 mole of sodium (Na)?

11 g

34 g

23 g

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1

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

(Ar of C is 12, Ar of O is 16)

11

g

g

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1

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

(Ar of H is 1, Ar of O is 16)

4

moles

moles

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1

How many moles are there in 10.2g of ammonia (NH3)? Give your answer as a decimal.

(Ar of N is 14, Ar of H is 1)

0.6

moles

moles

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1

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

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

0

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1

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

(Ar of N is 14)

112

g

g

0

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1