Mole Map Review Flashcard

Front

What is a mole in chemistry?

Back

A mole is a unit of measurement used to express the amount of a substance. It is defined as the amount of substance that contains as many entities (atoms, molecules, etc.) as there are in 12 grams of carbon-12.

Front

What is Avogadro's number?

Back

Avogadro's number is 6.022 x 10^23, which is the number of particles (atoms, molecules, etc.) in one mole of a substance.

Front

How do you convert moles to particles?

Back

To convert moles to particles, multiply the number of moles by Avogadro's number (6.022 x 10^23).

Front

What is the formula to calculate the number of moles from mass?

Back

The formula is: Number of moles = Mass (g) / Molar mass (g/mol).

Front

What is molar mass?

Back

Molar mass is the mass of one mole of a substance, usually expressed in grams per mole (g/mol). It is calculated by adding the atomic masses of all atoms in a molecule.

Front

How many moles are in 264 g of AlNO3?

Back

2.97 mol.

Front

How many moles are in 436 g of BaCl2?

Back

2.1 mol.

Front

What is the mass of 0.75 moles of (NH4)3PO4?

Back

111.75 g.

Front

What is the relationship between moles and volume for gases at STP?

Back

At standard temperature and pressure (STP), one mole of any gas occupies 22.4 liters.

Front

What is the formula to calculate the number of molecules from moles?

Back

To calculate the number of molecules, multiply the number of moles by Avogadro's number (6.022 x 10^23).