Molar Mass and Conversion Techniques

This video tutorial covers the conversion between atoms, moles, and mass using Avogadro's number and molar mass. It explains the mole map and provides step-by-step solutions to practice problems involving copper and gold. The tutorial emphasizes the importance of labeling units, following the mole map, and performing conceptual checks. It concludes with tips for solving conversion problems effectively.

What is Avogadro's number used for in conversions?

• To convert between grams and kilograms

• To convert between liters and milliliters

• To convert between atoms and moles

• To convert between Celsius and Fahrenheit

What is the molar mass of an element used for?

• To convert between atoms and moles

• To convert between moles and mass

• To convert between liters and grams

• To convert between Celsius and Kelvin

In the example problem, what is the first step to convert 7.42 x 10^23 atoms of copper to mass?

• Convert atoms to grams

• Convert atoms to moles

• Convert moles to grams

• Convert grams to moles

What is the molar mass of copper used in the example problem?

• 63.546 grams per mole

• 7.42 x 10^23 grams per mole

• 196.967 grams per mole

• 6.02 x 10^23 grams per mole

In the gold example, what is the starting point for the conversion?

• Atoms

• Moles

• Mass

• Liters

What is the molar mass of gold used in the example problem?

• 6.02 x 10^23 grams per mole

• 63.546 grams per mole

• 196.967 grams per mole

• 95.30 grams per mole

What is a crucial step to ensure accuracy in conversion problems?

• Ignoring the mole map

• Using shortcuts

• Skipping steps

• Labeling units clearly

Why is it important to follow the mole map?

• To skip unnecessary steps

• To avoid using Avogadro's number

• To find shortcuts

• To ensure correct conversion pathways

What should you do if your units do not cancel out in a conversion problem?

• Recheck the problem setup

• Continue with the calculation

• Use a different conversion factor

• Skip the problem

What is the best way to become proficient in solving conversion problems?

• Watching videos

• Reading about them

• Practicing them repeatedly

• Ignoring them