The Mole

Question 1

Relative atomic mass

Answer 1

The average mass of one atom of that element compared to 1 / 12 of the mass of one carbon-12 atom

Question 2

Relative molecular mass

Answer 2

The average mass of one molecule of that element or compound compared to 1 / 12 of the mass of one carbon-12 atom

Relative molecular mass of an ionic compound is more accurately known as the relative formula mass

Question 3

Mole

Answer 3

6 x 10^23 (avogadro’s constant)
number of moles = number of particles / 6 x 10^23

Question 4

Molar mass

Answer 4

The mass of one mole of atoms of the element

Molar mass = relative atomic mass

Number of moles = number of particles / molar mass

Mass = number of moles x molar mass

Question 5

Avogadro’s Law

Answer 5

Avogadro’s Law states that equal volumes of all gases, under the same temperature and pressure, contain the same number of particles

Question 6

Solution

Answer 6

Solute + Solvent = Solution

Question 7

Concentration

Answer 7

The amount of solute dissolved per unit volume of a solution

Question 8

Ways to measure the concentration of a solution

Answer 8

1. Mole concentration
2. Mass concentration

Question 9

Mole concentration

Answer 9

The number of moles of the solute dissolved in per unit volume of the solution

Question 10

Mass concentration

Answer 10

The number of grams of the solute dissolved in per unit volume of the solution

Question 11

Stoichiometry

Answer 11

The relationship between the moles of reactants and products involved in a chemical reaction