Chapter Three

Question 1

If you need to find the number of moles what should you do?

Answer 1

Divide the given in grams by the elements average mass.

Question 2

When you want the mass of moles in grams you do what?

Answer 2

Multiply the given amount of moles by the mass of the element.

Question 3

When finding out how many atoms are in an element how do you solve?

Answer 3

Take the given mass of an element in grams and divide by the elements average mass, then you multiply that by Avogadro’s number.

Question 4

When converting the mass of a compound to moles what to do?

Answer 4

You divide the given in grams by the molecular mass of the compound.

Question 5

If you want the mass of moles in grams how would you do that?

Answer 5

Take the given moles and multiply by the compounds molar mass.

Question 6

When trying to convert the molar mass of a compound to atoms how can you do that.

Answer 6

Take the molar mass of the compound in grams and divide by the given grams, after that multiply by Avogadro’s number.