Unit 3 Review

Front

What is Avogadro's number?

Back

Avogadro's number is 6.022 x 10^23, which is the number of representative particles (atoms, molecules, etc.) in one mole of a substance.

Front

What is the mass of 0.02 moles of potassium atoms?

Back

0.02 moles of potassium atoms has a mass of 0.782 g.

Front

How many molecules are in 1 mole of a substance?

Back

1 mole of a substance contains 6.022 x 10^23 molecules.

Front

What is the relationship between moles and mass?

Back

The mass of a substance in grams can be calculated by multiplying the number of moles by the molar mass of the substance.

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has the same number of each type of atom on both sides of the equation, indicating that mass is conserved.

Front

How do you calculate the number of molecules from moles?

Back

To calculate the number of molecules from moles, multiply the number of moles by Avogadro's number (6.022 x 10^23).

Front

What is the molar mass of AlCl3?

Back

The molar mass of AlCl3 (Aluminum Chloride) is approximately 133.33 g/mol.

Front

What does it mean for a reaction to be in equilibrium?

Back

A reaction is in equilibrium when the rate of the forward reaction equals the rate of the reverse reaction, resulting in constant concentrations of reactants and products.

Front

What is the significance of the mole in chemistry?

Back

The mole is a fundamental unit in chemistry that allows chemists to count particles by weighing them.

Front

What is the formula for calculating moles?

Back

Moles = Mass (g) / Molar Mass (g/mol).