Los Angeles Harbor College » Chemistry » Chem 065 - Introductory General Chemistry » Winter 2024

Question #1

What is the molar mass of sucrose (C12H22O11)?

A. 29.0 g

B. 210 g

C. 342 g

D. 182 g

E. 50.2 g

Question #2

How many moles of water, H2O, are present in 75.0 g of H2O?

A. 1.35 × 103 moles

B. 4.16 moles

C. 7.50 moles

D. 4.41 moles

E. 75.0 moles

Question #3

How many molecules of water, H2O, are present in 75.0 g of H2O?

A. 2.51 × 1024 molecules

B. 5.02 × 1024 molecules

C. 4.17 molecules

D. 75.0 molecules

Question #4

How many moles of hydrogen atoms are there in 0.500 mole of C2H6?

A. 0.500 moles

B. 6.00 moles

C. 3.00 moles

D. 1.00 moles

Question #5

How many hydrogen atoms are present in 75.0 g of H2O?

A. 4.17 atoms

B. 75.0 atoms

C. 7.53 × 1024 atoms

D. 5.02 × 1024 atoms

E. 2.51 × 1024 atoms