Chem H [Practice] Ch. 4 Quiz Mole Conversion

Do not use your phone calculator to work on these problems.

Ms. Chang will take your phone away if you are not practicing with your actual calculator >:(

Borrow one from Ms. Chang if you don't have one, and use the SAME calculator on Monday for the quiz.

• Ok

• x

Where on the periodic table can you find the information needed to determine the molar mass of a compound?

• Atomic mass
• Atomic number
• Valence electrons
• Types of elements

The molar mass of carbon atom is __ g/mol.

The molar mass of NaCl is __ g/mol.

Identify the "given" unit in the following question:

A nutrition label states that a serving of table salt (NaCl) contains 2.3 g of sodium. How many moles of sodium chloride does this correspond to?

• grams

• moles

• NaCl

• Avogadro's number

Identify the "unknown" unit in the following question:

A nutrition label states that a serving of table salt (NaCl) contains 2.3 g of sodium. How many moles of sodium chloride does this correspond to?

• grams

• moles

• NaCl

• Avogadro's number

Identify the ratio that should be used in the following question:

A nutrition label states that a serving of table salt (NaCl) contains 2.3 g of sodium. How many moles of sodium chloride does this correspond to?

Solve the problem:

A nutrition label states that a serving of table salt (NaCl) contains 2.3 g of sodium. How many moles of sodium chloride does this correspond to?

Identify the type of conversion being performed in the following question:

Yeast ferments sugar to produce ethanol and carbon dioxide. If a baker’s dough releases 2.8 moles of CO₂ gas, what is the volume of gas produced at STP?

• volume to mass

• particles to volume

• mole to volume

• volume to moles

Solve the problem:

Yeast ferments sugar to produce ethanol and carbon dioxide. If a baker’s dough releases 2.8 moles of CO₂ gas, what is the volume of gas produced at STP?

• 62.72 L CO₂

• 0.125 L CO₂

• 8 L CO₂

• 1.69 x 10²⁴ L CO₂