Mole Calculation Practice

What is the mass of 0.5 moles of water? (MM water = 18.016 g/mol)

• 12.008 g

• 18.015 g

• 9.0075 g

• 3.0045 g

Tags

NGSS.HS-PS1-7

Find the moles in 10 grams of carbon dioxide. (MM carbon dioxide = 44.011 g/mol)

• 0.227 moles

• 0.05 moles

• 1.5 moles

• 0.5 moles

How many particles are in 2 moles of oxygen?

• 2.5 x 10^23 particles

• 3.402 x 10^25 particles

• 5.678 x 10^22 particles

• 1.2044 x 10^24 particles

Calculate the number of particles in 0.5 moles of carbon dioxide.

• 1.5 x 10^24 particles

• 7.5 x 10^23 particles

• 5 x 10^22 particles

• 3.011 x 10^23 particles

Convert 6.022 x 10^23 particles of oxygen to moles.

• 0.5 moles

• 6 moles

• 1 mole

• 12 moles

Determine the number of moles in 3.01 x 10^23 particles of sulfur.

• 1.5 moles

• 4.5 moles

• 0.5 moles

• 2.5 moles

What should you do to convert from mass of a substance to moles of a substance?

• MULTIPLY by Avogadro's #

• DIVIDE by Molar Mass

• MULTIPLY by Molar Mass

• DIVIDE by Avogadro's #

If given moles of a substance and asked to find the mass, you should...

• DIVIDE by Molar Mass

• MULTIPLY by Avogadro's #

• DIVIDE by Avogadro's #

• MULTIPLY by molar mass

If you are given moles of a substance and asked to find the number of atoms, you should...

• MULTIPLY by molar mass

• DIVIDE by Avogadro's #

• MULTIPLY by Avogadro's #

• DIVIDE by Molar Mass

If you are given the number of molecules and asked to find the number of moles, you should...

• MULTIPLY by Avogadro's #

• DIVIDE by Molar Mass

• DIVIDE by Avogadro's #

• MULTIPLY by Molar Mass