1.1 and 1.2

What is the molar mass of carbon?

• 6.0 g/mol
• 12.0 g/mol
• 22.4 g/mol
• 6.02 x 10²³ g/mol

What is the molar mass of NaCl?

• 58.45g/mol

• 28g/mol

• 12g/mol

• 6.02 x 10²³

How many moles are 98.3 grams of aluminum hydroxide, Al(OH)₃?

• 1.26 moles

• 0.8 moles

• 7,673.4 moles

• 150 moles

The empirical formula for hydrocarbon A is C₂H₇O. If the molar mass of the hydrocarbon is 141 g/mol, determine the molecular formula for this hydrocarbon.

• C₂H₇O

• C₄H₁₄O₂

• C₆H₂₁O₃

• C₈H₂₈O₄

Calculate for the molar mass of FeSO₄.

The molecular formula for a carbon and hydrogen compound is C₈H₁₈. What is the empirical formula?

• C₈H₁₈

• C₉H₄

• C₁₈H₈

• C₄H₉

An empirical formula is defined as _______?

• The formula showing the ratio of moles in a formula.

• The actual whole number ratio of atoms in a formula.

• The formula showing the ratio of atoms in a formula.

• The lowest whole number ratio of atoms in a formula.

A mole of Neon contains

6.02 x 10²³ _____.

• formula units

• ions

• atoms

• molecules

Determine the molar mass for CCl₄

• 153.8 g/mol
• 47.54 g/mol
• 189.35 g/mol
• 82.9 g/mol

In a correctly written symbol what would be located in the "A" position?

• number of neutrons
• atomic number
• number of electrons 
• mass number