Moles

Front

What is the molar mass?

Back

The molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol). It is calculated using the atomic masses of the elements from the periodic table.

Front

How do you calculate mass from moles?

Back

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

Front

What is Avogadro's number?

Back

Avogadro's number is 6.02 x 10^23, which represents the number of representative particles (atoms, molecules, ions) in one mole of a substance.

Front

What does one mole of a substance represent?

Back

One mole of a substance represents 6.02 x 10^23 representative particles of that substance.

Front

How many molecules are in 1 mole of NaCl?

Back

1 mole of NaCl contains 6.02 x 10^23 molecules of NaCl.

Front

What is the relationship between moles and molecules?

Back

The relationship is defined by Avogadro's number: 1 mole of any substance contains 6.02 x 10^23 molecules.

Front

If you have 2 moles of a substance, how many molecules do you have?

Back

You have 2 x 6.02 x 10^23 = 1.204 x 10^24 molecules.

Front

What is the formula to convert moles to grams?

Back

Grams = Moles x Molar Mass.

Front

What is the formula to convert grams to moles?

Back

Moles = Grams / Molar Mass.

Front

What is the significance of the periodic table in chemistry?

Back

The periodic table provides essential information about the elements, including their atomic masses, which are used to calculate molar masses.