Mole Conversions Explained

This video tutorial explains the process of converting between moles and grams, a crucial skill in chemistry. It covers the use of molar masses as conversion factors and demonstrates dimensional analysis through examples. The video provides step-by-step guidance on converting grams to moles and vice versa, using substances like copper, sodium chloride, and carbon. Additional resources for further learning are also mentioned.

Why is it important to convert between moles and grams in chemistry?

• Because moles are easier to measure directly.

• Because grams are the unit that can be measured on a scale.

• Because grams are always smaller than moles.

• Because moles are not used in chemical reactions.

What is the molar mass of carbon?

• 58.5 grams per mole

• 12 grams per mole

• 180 grams per mole

• 63.5 grams per mole

How can the molar mass of glucose be written as a conversion factor?

• 1 mole of glucose per 180 grams of glucose

• 1 mole of glucose per 58.5 grams of glucose

• 1 mole of glucose per 12 grams of glucose

• 1 mole of glucose per 63.5 grams of glucose

What is the first step in performing dimensional analysis?

• Determine the units you want to convert to.

• Find the appropriate conversion factor.

• Determine the quantity and units you have.

• Set up the dimensional analysis table.

In dimensional analysis, what should you do after setting up the table?

• Determine the units you want to convert to.

• Determine the units you have.

• Multiply the values on the top and divide by the values in the denominator.

• Find the appropriate conversion factor.

If you have 10.13 grams of copper, how many moles is this?

• 0.162 moles

• 0.2 moles

• 0.0162 moles

• 1.62 moles

What is the molar mass of copper?

• 58.5 grams per mole

• 12 grams per mole

• 180 grams per mole

• 63.5 grams per mole

If you have 2.4 moles of sodium chloride, how many grams is this?

• 14.4 grams

• 58.5 grams

• 140.4 grams

• 46.8 grams

What is the molar mass of sodium chloride?

• 58.5 grams per mole

• 12 grams per mole

• 180 grams per mole

• 63.5 grams per mole

If you have 3.9 moles of carbon, how many grams is this?

• 12 grams

• 46.8 grams

• 58.5 grams

• 63.5 grams