Moles

Question 1

1 mole is equivalent to

Answer 1

• the number of atoms in 12g of carbon-12
• 6.02 × 10^23 particles (Avogadro’s number)
• relative formula mass (g)

Question 2

Moles equation

Answer 2

Moles = mass/Mr

Question 3

Stoichiometric coefficients

Answer 3

Numbers in front of each formula that show the ratio of numbers of each reactant and product

Question 4

Yield

Answer 4

the volume of a substance produced in a chemical reaction

Question 5

Yield equation

Answer 5

% yield = actual yield/expected yield × 100

Question 6

Molecular formula

Answer 6

actual number of atoms in one molecule

Question 7

Empirical formula

Answer 7

simplest whole number ratio of atoms in a compound

Question 8

Hydrated

Answer 8

Solid substances that have water molecules bound to the ionic salt (e.g., MgSO4.7H2O)

Heating can remove the water to form the anhydrous salt

Question 9

Concentration equation

Answer 9

Concentration = moles/volume
volume = dm^3
concentration = mol/dm^3

Question 10

Avogadro’s Law

Answer 10

Gases with equal volume, pressure, and temperature contain the same number of particles

Question 11

Volume at rtp equation

Answer 11

Volume = moles × molar volume (24)