Chemical Bonding & Stoichiometry recap

Multiple Choice

What is the molar mass of the diatomic element nitrogen?

• 7 g/mol

• 14 g/mol

• 28 g/mol

Multiple Choice

How many particles are in a mole?

• 602
• 602 million
• 602 moles
• 6.02 x 10²³

Multiple Choice

Calculate the molar mass of NH₄NO₂

• 50 g/mol

• 60 g/mol

• 64 g/mol

• 78 g/mol

Math Response

A molecule of glucose is comprised of 6 atoms of carbon, 12 atoms of hydrogen, and 6 atoms of oxygen. What is the molar mass of glucose?

Type answer here

Correct Answer: 180.16

Deg^°

Rad

Math Response

What is molar mass of ethanol (C₂H₅OH) in g/mol? (Answer to three decimal places.)

Use the following atomic masses to solve:

Carbon: 12.011

Hydrogen: 1.008

Oxygen: 15.999

Type answer here

Correct Answer: 46.069

Deg^°

Rad

Math Response

How many atoms of NaCl are present in 11.0 moles?

Type answer here

Correct Answer: 6.62\times10^{24}

Deg^°

Rad