Moles

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

The mole can be used to measure (SELECT ALL CORRECT ANSWERS)

• The amount of atoms

• The amount of fission

• The amount of molecules or compounds in a substance

• The amount of particles

How many atoms are in 1 mole of Iodine (I)

• 6.02 x 10²³

• 6.02 x 10²⁵

• 4.02 x 10²³

• 4.02 x 10²⁵

If an atom of Fluorine has an atomic mass of 19.0, it has a Molar mass of ____________

• 19 lbs

• 19 kg

• 19 mol

• 19 g/mol

What are the units for molar mass?

• grams

• amu

• grams/mole

• liters

The Molar Mass of F₂ (Flouride) is

• 18.99 g/mol

• 37.98 g/mol

• 75.96 g.mol

• 25 g/mol

What is the molar mass of H₂O?

• 6.02 x 10²³

• 16 grams

• 18 gram/mole

• 15.99 gram/mol

What is the molar mass NaCl?

• 58 grams/mole

• 162 grams

• 22.95 grams

• 6.02 x 10²³

How many moles are in 20 grams of Ca (Calcium)?

• 3

• 0.5

• 1

• 20

What is the molar mass when you have 4 moles of CO₂?

• 54 grams

• 128 grams

• 280 grams

• 176 grams