Molar Mass and Conversion Factors

This video tutorial explains how to convert 3.52 moles of lithium to grams. It begins by introducing the concept of moles and grams conversion, then demonstrates how to find the molar mass of lithium using the periodic table. The video walks through the calculation process, showing how to multiply the number of moles by the molar mass to get the total grams. It also covers how to reverse the process, converting grams back to moles by dividing by the molar mass. The tutorial concludes with general tips for converting moles to other units, emphasizing the importance of using the correct conversion factors.

What is the first step in converting moles of a substance to grams?

• Subtract the atomic number

• Add the atomic number

• Multiply by the molar mass

• Divide by the molar mass

Where can you find the molar mass of an element?

• In a chemistry textbook

• On a calculator

• In a scientific journal

• On the periodic table

What is the molar mass of lithium?

• 3.52 grams per mole

• 6.94 grams per mole

• 1.00 grams per mole

• 24.43 grams per mole

How many grams of lithium are in 3.52 moles?

• 6.94 grams

• 24.43 grams

• 3.52 grams

• 12.00 grams

What operation would you perform to convert grams back to moles?

• Divide by the molar mass

• Add the atomic number

• Subtract the atomic number

• Multiply by the molar mass

What is the purpose of the periodic table in conversions?

• To find the atomic number

• To find the volume

• To find the molar mass

• To find the density

When converting moles to liters or particles, what operation is typically used?

• Subtract

• Divide

• Multiply

• Add

What is the conversion factor used when converting moles to grams?

• Molar mass

• Volume

• Atomic number

• Density