Molar mass and Mole Conversions Flashcard-30 min

Front

What is the molar mass of one molecule of Nitrogen gas (N2)?

Back

28.02 g

Front

How many moles of water are in 16.94g of water?

Back

0.9401 mol H2O

Front

What are the units for molar mass?

Back

grams/mole

Front

How many grams of Carbon (C) are in 1.2 x 10^24 atoms of C?

Back

24 grams

Front

How many moles of Magnesium (Mg) are in 19.82 g Mg?

Back

0.8156 mol Mg

Front

Define molar mass.

Back

The mass of one mole of a substance, typically expressed in grams per mole (g/mol).

Front

What is Avogadro's number?

Back

6.022 x 10^23, the number of atoms or molecules in one mole of a substance.

Front

How do you calculate the number of moles from grams?

Back

Number of moles = mass (g) / molar mass (g/mol).

Front

What is the molar mass of water (H2O)?

Back

18.02 g/mol.

Front

If you have 2 moles of a substance, how many grams do you have if the molar mass is 12 g/mol?

Back

24 grams.