Metric and Mole Review

What is the molar mass of CO₂?

• 12.40 g/mol

• 16.55 g/mol

• 32.21 g/mol

• 44.00 g/mol

The mass of one mole of a substance is called?

• Molecular mass

• Mole constant

• Molar Mass

• Atomic weight

What are the units for molar mass?

• grams

• AMU

• g/mol

• mole

What is the percent composition by mass of sulfur (S) in the compound MgSO₄?

• 20.22%

• 19.85%

• 26.64%

• 28.64%

What is the molar mass of Zn(C₂H₃O₂)₂

• 183.46g/mol

• 169.89L

• 120.65g/mol

• 236.54M

Number of H in 3(NH₄)₂CrO₄

• 4

• 8

• 24

• 2

What is the mole used for? 

• To measure the amount of grams in a substance
• To measure the amount of atoms or molecules in a substance
• To measure the amount of energy in a substance
• To measure the amount of bonding in a substance 

What is Avogadro's Number? 

• 6.02 x 10²³
• - 6.02 10²³
• 6.02 x 10²²
• 6,020,000,000,000

Avogadro's number of representative particles is equal to one_____.

• kilogram
• gram
• kelvin
• mole

What is the Law of Conservation of mass?

• Mass is created in a chemical reaction
• Mass is created in a physical change
• New chemicals formed from a chemical reaction have a larger overall mass than the original reactants
• Mass is never created or destroyed