Unit 7 Exam Review

How many moles in 15.9 g of carbon?

• 1.32 moles

• 5.9 moles

• 0.644 moles

• 2.28 moles

How many moles in 358g of CO₂?

• 8.13 moles

• 25.68 moles

• 55.2 moles

• 2.67 moles

How many moles in 96.2g of MgSO₄?

• 32.46 moles

• 0.799 moles

• 2.97 moles

• 6.41 moles

What is the mass of in 2.56 moles of sodium?

• 66.89 grams

• 1.72 grams

• 0.113 grams

• 58.9 grams

What is the mass of 2.98 mol CCl₄?

• 4.67 grams

• 458 grams

• 1.56 grams

• 141 grams

What is the mass of 3.21 mol MgSO₄?

• 231 grams

• 2.58 grams

• 386 grams

• 137 grams

How many atoms are present in 1.00 mole of carbon (C)?

• 100 atoms

• 6.02x10²³ atoms

• 5.13x10²⁴ atoms

• 12.011 atoms

How many molecules are in 3.14 moles of H₂O?

• 7.14x10²²

• 6.02x10²⁴

• 1.89x10²⁴

• 2.98x10²³

How many molecules are there in 3.77 moles of ethanol (C₂H₅OH)?

• 2.27x10²⁴

• 3.77x10²³

• 1.02x10²⁴

• 5.38x10²²

How many moles are there in 6.427 X 10²⁴ molecules of oxygen, O₂?

• 15.99 moles

• 6.021 moles

• 10.68 moles

• 1.91 moles