Question 1

How many moles of carbon dioxide (CO2) are present in 44 grams of carbon dioxide?

Accepted Answer

1 mole

Answer

3 moles

Answer

0.5 moles

Answer

2 moles

Question 2

What is the formula for calculating moles?

Accepted Answer

moles = mass / molar mass

Answer

moles = pressure × volume

Answer

moles = volume × molarity

Answer

moles = concentration / volume

Question 3

What is the mass of 0.5 moles of water (H2O) if the molar mass is approximately 18 g/mol?

Accepted Answer

9 g

Answer

36 g

Answer

4.5 g

Answer

18 g

Question 4

What is a limiting reactant?

Accepted Answer

that produces least amount of product and is completely consumed

Answer

that is not fully consumed

Answer

that remains unreacted

Answer

that is independent of product

Question 5

How many moles are there in 60g of Carbon (C)? (Given: Molar mass of C = 12 g/mol)

Accepted Answer

5 moles

Answer

3 moles

Answer

4 moles

Answer

2 moles

Question 6

What is the mass in grams of 3 moles of oxygen gas (O2)? (Given: Molar mass of O = 16 g/mol)

Accepted Answer

96 grams

Answer

32 grams

Answer

48 grams

Answer

64 grams

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