Front

What is Avogadro's number?

Back

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

Front

How many atoms are in 1 mole of Iodine (I)?

Back

1 mole of Iodine (I) contains 6.022 x 10^23 atoms.

Front

What are the units for Avogadro's number?

Back

The units for Avogadro's number are particles.

Front

How is moles abbreviated?

Back

Moles are abbreviated as 'mol'.

Front

How many moles are in 6.02 x 10^23 molecules of H2O?

Back

There is 1 mole in 6.02 x 10^23 molecules of H2O.

Front

What is the relationship between moles and mass?

Back

The mass of a substance in grams is equal to the number of moles multiplied by the molar mass (g/mol).

Front

What is the molar mass of water (H2O)?

Back

The molar mass of water (H2O) is approximately 18 g/mol.

Front

How do you convert grams to moles?

Back

To convert grams to moles, divide the mass of the substance by its molar mass.

Front

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

Back

Number of particles = moles x Avogadro's number (6.02 x 10^23).

Front

What is the significance of Avogadro's number in chemistry?

Back

Avogadro's number allows chemists to count particles by weighing them, linking the macroscopic and microscopic worlds.