Moles

Front

What is Avogadro's number of representative particles equal to?

Back

1 mole.

Front

What is the mass of 1.5 mol of H₂O?

Back

27 grams.

Front

How many moles of carbon atoms are in 5g of carbon?

Back

0.42 mol.

Front

How many molecules are in 32.4 grams of phosphorous pentoxide?

Back

1.76 x 10²³ molecules.

Front

How many atoms of iodine are in a mole of iodine?

Back

6.02 x 10²³.

Front

Define a mole in chemistry.

Back

A mole is a unit that measures the amount of substance, defined as containing exactly 6.02 x 10²³ representative particles.

Front

What is the relationship between moles and mass?

Back

Mass (g) = Moles x Molar Mass (g/mol).

Front

How do you calculate the number of molecules from moles?

Back

Number of molecules = Moles x Avogadro's number (6.02 x 10²³).

Front

What is the molar mass of water (H₂O)?

Back

18 g/mol.

Front

How many grams are in 2 moles of sodium chloride (NaCl)?

Back

117 g (2 moles x 58.5 g/mol).