Counting in Moles

What's a mole?

100

How many atoms are in one mole?

602 hexillion (6.02 x 10²³)

200

If you had two moles of atoms, how many would you have? 

1204 hexilion (1.204 x 10²⁴)

300

6.022 x 10²³ is also called _________'s number, named after an accomplished chemist. 

Avogadro's Number

Molar Mass Calculations

100

What is the mass of 2.5 moles of oxygen?

~ 40 grams

200

A copper pipe is 410 g. How many moles of copper does it contain?

6.45 moles

300

Which is heavier - 1 mole of iron or 3 moles of carbon? 

1 mole of iron (with a mass of 55.845 g)

Law of Definite Proportions

100

Water has the formula H₂O

If a sample of water contains 8 moles of H, it must contain _____ moles of O. 

4

200

Potassium nitrate has the formula KNO₃

If a sample contains 5 moles of K, it must contain _____ moles of N and ______ moles of O. 

5 moles of N; 15 moles of O

300

Glucose has the chemical formula C₆H₁₂O₆

If a sample contains 1.5 moles of oxygen, it must contain _____ moles of hydrogen. 

3