Mole Review

Which has MORE particles (atoms or molecules): 1 mole of O₂ or 1 mole of H₂?

• 1 mole of O2

• 1 mole of H2

• Both are equal

How many moles are in 4.5 x 10²⁴ atoms of lithium?

• .134 Moles

• 2.7 X 10^48 Moles

• 7.47 Moles

• 6.4 X 10^23 Moles

To covert GRAMS into MOLES....

• Multiply Grams of Substance by Molar Mass of Substance

• Divide Grams of Substance by Molar Mass of Substance

• Multiply Grams of Substance by 6.02X10^23

• Divide Grams of Substance by 6.02X10^23

Solve for the following: how many moles do you have if you have 54 grams of H₂O?

• 18 g/mol

• .333 moles

• 972 moles

• 3 moles

Solve for the following: How many grams are in 10 moles of O₂?

• 32 g/mol

• 320 grams

• .313 grams

• 160 grams

How many molecules are in 1 mole of H2O?

• 18 g/mol

• 1.66 X 10^-24

• 1 molecule

• 6.02 X 10^23 molecules

If given info is number of atoms, and you need to convert to grams, how would you solve?

• 6.02X10^23 divided by # of Atoms, then multiply by Molar Mass

• # of Atoms divided by 6.02X10^23, then multiply by Molar Mass

• # of Atoms multiplied by Molar Mass

• # of Atoms multiplied by 6.02X10^23, then divide by molar mass

Tags

NGSS.HS-PS1-7

How many moles are in 6.02 x 10²³ molecules of H₂O?

• 6.02 X 10^23 moles

• 18 moles

• 6.02 moles

• 1 mole

How do you convert from grams to moles?

• Multiply the moles by 22.4L

• Multiply the moles by 6.02X10 ²³ particles

• Multiply the moles by the molar mass of the substance

• Divide the moles by the molar mass of the substance

What do you have to do to convert from representative particles to moles ?

• Multiply the moles by 6.02X10 ²³ particles

• Divide by 6.02X10 ²³ particles

• Multiply the moles by 22.4L

• Multiply the moles by 22.4