The Atom Part II Review

Front

What is Avogadro's number?

Back

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

Front

How many Carbon atoms are in one mole of Carbon?

Back

There are 6.02 x 10^23 Carbon atoms in one mole of Carbon.

Front

What is the molar mass of Carbon?

Back

The molar mass of Carbon is 12 grams per mole.

Front

How do you calculate the number of moles from grams?

Back

Number of moles = mass (g) / molar mass (g/mol).

Front

Calculate the amount of moles in 44 grams of Carbon.

Back

There are 3.7 moles of Carbon in 44 grams.

Front

What is the formula to find the mass of a substance from moles?

Back

Mass (g) = moles x molar mass (g/mol).

Front

How many grams are equal to 0.11 mole of copper (I) chromate, Cu2(CrO4)?

Back

0.11 mole of Cu2(CrO4) is equal to 26.74 grams.

Front

What is the relationship between moles and particles?

Back

1 mole of any substance contains 6.02 x 10^23 particles.

Front

What is the definition of a mole in chemistry?

Back

A mole is a unit that measures the amount of substance, defined as containing exactly 6.02 x 10^23 particles.

Front

What is the significance of the number 6.02 x 10^23 in chemistry?

Back

It represents Avogadro's number, which is used to convert between moles and number of particles.