Molar Mass & Percent Composition

How many TYPES of atoms are in the compound: NH₃

• 2

• 3

• 4

• 6

How many TYPES of atoms are in CH₃Br?

• 2

• 3

• 4

• 5

How many Hydrogen atoms are in NH₄OH

• 2

• 3

• 4

• 5

How many Hydrogen atoms are in (NH₄)₂O?

• 4

• 2

• 6

• 8

How many Nitrogen atoms are in (NH₄)₂O?

• 4

• 2

• 6

• 8

What is the molar mass of table salt (NaCl)?

• 116.886 g/mol
• 35.453 g/mol
• 22.990 g/mol
• 58.443 g/mol

Determine the percent composition of Na in NaCl:

• 50.00%

• 39.34%

• 60.66%

• 22.99%

Calculate the molar mass of CO₂

• 12.011

• 28.01

• 44.01

• 56.02

Calculate the percent composition of Oxygen in CO₂

• 72.71%

• 27.29%

• 33.33%

• 36.35%

Sodium hydroxide is used in many industries: in the manufacture of pulp and paper, textiles, drinking water, soaps and detergents, and as a drain cleaner. What is the molar mass of NaOH?

• 40 amu

• 38.989 amu

• 23.998 amu

• 57.004 amu