The Mole

The mole is 6.02 x 10²³ atoms or molecules of any substance. This number is also named after the scientist who calculated it. This was:

• Perrin

• Avogadro

• Einstein

• Newton

How do you find the molar mass for an element?

• Molar mass is the same as atomic mass, only in grams

• You convert into molar mass from a mass given to you

• You can only be given molar mass, it can't be calculated

• It is equal to Avogadro's Number

How many grams is one mole of Sodium?

• 32.07

• 118.71

• 150.36

• 22.99

How many grams is 2 moles of Helium?

• 4.00

• 8.00

• 2.02

• 4.04

How many moles are 156.00 grams of Chromium?

• 4

• 52

• 3

• 1

40 moles of Helium (He) would have a mass of:

• 160 g

• 80 g

• 320 g

• 6.022 x 10²³ g

What is Avogadro's number?

• 6.02 x 10²³

• 1 mole

• 600 million

• 6.02

How many grams are in 3 mol of carbon?

• 6 grams

• 12 grams

• 18 grams

• 36 grams

How many moles are in 6.02 x 10²³ molecules of H₂O?

• 1 mole

• 2 moles

• 6.02 moles

• 602000000000000000000000 moles

How many molecules are there in 31.8 moles of water?

• 5.28 x 10^-23 molecules

• 1.91 x 10²⁵ molecules

• 5.28x 10^-25 molecules

• 1.91 x 10²³ molecules