The Atom Part II Review

Front

What is the mass in grams of 2.3456 moles of W?

Back

431.22 grams

Front

What is the molar mass of Hydrogen Peroxide (H2O2)?

Back

34.02 g/mole

Front

What is the mole used for?

Back

It's a counting unit used to measure the amount of atoms or molecules in a substance.

Front

What are the units for molar mass?

Back

grams/mole

Front

How many atoms are in 1 mole?

Back

6.02 x 10^23 atoms

Front

Define 'mole' in chemistry.

Back

A mole is a unit that measures the amount of substance, defined as containing exactly 6.02 x 10^23 entities (atoms, molecules, etc.).

Front

What is the significance of Avogadro's number?

Back

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

Front

How do you calculate the molar mass of a compound?

Back

Add the atomic masses of all atoms in the compound's formula.

Front

What is the relationship between moles and mass?

Back

Mass (grams) = Moles x Molar Mass (g/mole).

Front

What is the molar mass of water (H2O)?

Back

18 g/mole.