Avogadro and Mole Daily

Front

What is the molar mass of table salt (NaCl)?

Back

58.443 g/mol

Front

The molar mass of an element is equal to its...

Back

Atomic mass

Front

How many moles is 6.02 x 10^23 molecules of H2O?

Back

1 mole

Front

How do we calculate the molar mass of H2O?

Back

2+16=18

Front

What is Avogadro's number?

Back

6.02 x 10^23

Front

Define Avogadro's Law.

Back

Equal volumes of gases, at the same temperature and pressure, contain an equal number of molecules.

Front

What is the relationship between moles and mass?

Back

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

Front

What is the formula to convert grams to moles?

Back

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

Front

What is the significance of Avogadro's number in chemistry?

Back

It allows chemists to count particles by weighing them.

Front

How many molecules are in 2 moles of a substance?

Back

1.204 x 10^24 molecules (2 x 6.02 x 10^23)