Classwork 1 Chemistry 11th

Find the molar mas of: CrCl₃

• 145g/mol

• 85g/mol

• 158g/mol

• 445/gmol

Percentage composition is the percentage by mass of each element in the compound

• true

• false

Find the molar mass of: NH₃

• 78g/mol

• 17g/mol

• 56g/mol

• 25g/mol

Find the molar mass of: CS₂

• 212g/mol

• 120g/mol

• 15g/mol

• 76g/mol

Find the molar mass of: KBr

• 145g/mol

• 119g/mol

• 85g/mol

• 52g/mol

The atomic mass of Rubidium is 120.78

• true

• false

The atomic mass of Silver is: 107.87

• true

• false

The atomic mass of Cesium is: 132.91

• true

• false

Find the molar mass of: C₂H₃N

• 124.32g/mol

• 78.65g/mol

• 41.053g/mol

• 98g/mol

Find the molar mass of:

CaSO₄

• 258.87g/mol

• 189.21g/mol

• 165.23g/mol

• none