Stoichiometry Review

What is the molar mass of NaCl?

• 58.45g/mol
• 28g/mol
• 12g/mol
• 6.02 x 10²³

What is the molar mass of C₂H₄O₂?

• 40g
• 50g
• 60g
• 68g

How do we get mass from moles?

• multiply by avogadro's number
• multiply by molar mass
• divide by avogadro's number
• divide by molar mass

Put the steps in order when converting grams to atoms.

• Step 3

• Convert to Moles

• Step 2

• Convert to Atoms

• Step 1

• Mole Ratio

To determine the molar mass of an element, one must know the element's

• atomic number

• atomic mass

• number of isotopes

• Avogadro's constant

A mass of 46 g of sodium contains about

• 46 mol of Na

• 23 mol of Na

• 2 mol of Na

• 1 mol of Na

The mass of 1.5 moles of cobalt is

• 59 g

• 64 g

• 88 g

• 118 g

What is the molar mass of aluminum?

• 13 g/mol

• 26.98 g/mol

• 53.96 g/mol

• 6.02 x 10²³ g/mol

Find the molar mass of Ca₃(PO₃)₂

• 87.05 g/mol

• 247.21 g/mol

• 278.18 g/mol

• 398.42 g/mol

How many moles are in 35.6 g of Lithium?

• 5.13 mol

• 5.13 g

• 247 mol

• 247 g