Stoichiometry

What unit is a measurement of mass?

• moles

• grams

• centimeters

• milliliters

What piece of equipment is used to measure mass?

• graduated cylinder

• ruler

• balance

• thermometer

The molar masses can be found on the

The number that goes in front of mole is

• 6.02 x 10²³

• 1

• 22.99

1 mole Na = 6.02 x 10²³ atoms Na

• true

• false

22.99 g Na = 1 mole Na = 6.02 x 10 ²³ atoms Na

• true

• false

Which conversion factor would be used to change 8 grams Na into moles of Na?

• 22.99g Na

  1 mole

• ^{1 mole Na}

  22.99 g

Which conversion factor would be used to convert 2.3 x 10²⁰ atoms of Na into moles of Na?

• 1 mole Na

  6.02 x 10²³ atoms Na

• ^{6.02 x 1023 atoms Na}

  1 mole

Which conversion factor would be used to convert 10.0 moles of Na into grams of Na?

• 22.99 g Na

  1 mole Na

• 1 mole Na

  22.99 g Na

Which conversion factor would be used to convert 25.0 moles of Na into atoms of Na?

• 1 mole Na

  6.02 x 10²³ atoms Na

• 6.02 x 10²³ atoms Na

  1 mole