The Mole Concept

Front

What do we call the chemistry unit to quantify the amount of a substance?

Back

Mole

Front

What is the number of moles in 222.0 g of Ca(OH)₂?

Back

3 moles

Front

How many moles are there in 16g of helium atoms?

Back

4 moles

Front

Which has more molecules? 1 mole H₂O, 1 mole Al(OH)₃, 1 mole NaCl, or all the same?

Back

There are all the same.

Front

1 mol = ? g O₂

Back

32 g

Front

What is Avogadro's number?

Back

6.022 x 10²³ particles/mol

Front

What is the molar mass of water (H₂O)?

Back

18 g/mol

Front

How do you convert grams to moles?

Back

Moles = grams / molar mass

Front

What is the relationship between moles and molecules?

Back

1 mole contains Avogadro's number of molecules.

Front

What is the molar mass of carbon dioxide (CO₂)?

Back

44 g/mol