ST Chem 10.1, 16.1 quiz Mole Conversions

The unit of measurement used when finding the molarity (concentration) of a solution is ....

• moles

• atoms

• molecules

• moles/L or M

One mole of gas particles has a volume of _____________ at room temperature.

• 10 L

• 22.4 L

• 100 L

• 14.5 L

Which ratio below would be used to convert 20 grams of zinc (Zn) into moles?

• 1 mole/22.4 L

• atomic mass of zinc/1 mole

• 1 mole/atomic mass of zinc

• 1 mole/6.02 x 10²³ atoms

A student needs 6 moles of carbon for lab. What is the mass of 6 moles of carbon? (carbon's atomic mass is 12 g.)

• .42 grams

• 60 grams

• 72 grams

• 100 grams

How many copper atoms are found in 1 mole of copper?

• 1000

• 63

• 6.02 x 10²³

• 29

What is the volume of a helium balloon that contains 4 moles of helium at STP?

• 7.4 L

• 89.6 L

• 101.4 L

• 67.2 L

How many grams are in 2 moles of sodium hydroxide (NaOH)?

• 40.00 g

• 80.00 g

• 60.00 g

• 100.00 g

What is the molar mass of carbon dioxide (CO₂)?

• 44.01 g/mol

• 28.01 g/mol

• 60.01 g/mol

• 18.015 g/mol

Tags

NGSS.HS-PS1-7