Chemical Quantities Review

What is the molar mass of table salt (NaCl)?

• 116.886 g/mol
• 35.453 g/mol
• 22.990 g/mol
• 58.443 g/mol

Calculate the molar mass of Ba(C₂H₃O₂)₂

• 255.3 g/mol

• 237.3 g/mol

• 228.3 g/mol

• 196.3 g/mol

What is the mass of one mole of Helium?

• 4 g

• 2 g

• 8 g

• There is no way to know

How many grams are in 88.1 moles of magnesium?

• 2141 g
• 0.3 g
• 30 g
• 3.6 g

How many hydrogen atoms are in the compound: (NH₄)₂CO₃

• 3
• 4
• 6
• 8

How many atoms of iodine are in 1 mole of iodine?

• 53
• 63.55

• 126.9
• 6.02 x 10²³

How many molecules would be in 8.4 moles of Octane (C₈H₁₈)?

• 5.77 x 10²³

• 5.04 x 10²⁴

• 5.77 x 10²⁶

• 5.04 x 10²³

Which has more molecules?

• 1 mole H₂O
• 1 mole Al(OH)₃
• 1 mole NaCl
• They all contain the same number of molecules

How many atoms of carbon are in 6.00g of carbon?

• 1.20x10²⁴atoms C
• 6.02x10²³atoms C
• 3.01x10²³atoms C
• 1.50x10²³atoms C

You know 1000 mg = 1 g.  Convert 2.5 grams into milligrams.

• 25 mg
• 25,000 mg
• 250 mg
• 2500 mg