Mole Concept

Front

What is Avogadro's Number?

Back

Avogadro's Number is 6.02 x 10^23, which represents the number of representative particles in one mole of a substance.

Front

Avogadro's number of representative particles is equal to one_____

Back

mole.

Front

What do we use the periodic table to calculate?

Back

We use the periodic table to calculate molar mass.

Front

If I need 20.4 moles of sodium chloride, how much should I weigh out?

Back

You should weigh out 1192 g of sodium chloride.

Front

How do we get mass from moles?

Back

To get mass from moles, multiply the number of moles by the molar mass.

Front

Define a mole in terms of particles.

Back

A mole is defined as the amount of substance that contains as many particles (atoms, molecules, ions, etc.) as there are in 12 grams of carbon-12.

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).

Front

How do you calculate the number of moles from mass?

Back

To calculate the number of moles from mass, divide the mass of the substance by its molar mass.

Front

What is the relationship between moles and volume of a gas at STP?

Back

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

Front

What is the formula for calculating the number of particles from moles?

Back

The formula is: Number of particles = Moles x Avogadro's Number.