Y11 Moles VMA

stoichiometry

calculations involving the mass relationships between reactants and products in a chemical reaction

mole ratio

a conversion factor that relates the amounts in moles of any two substances involved in a chemical reaction

Coefficents

the numbers in a chemical equation that give the mole ratios of the substances

Empirical formula

a chemical formula showing the ratio of elements in a compound rather than the total number of atoms

Mole

The same number of particles as present in 12g of C 12

Mass number

Total number of protons and neutrons in the nucleus of an atom

Find the number of molecules in 0.65 mol of C2H4O2. Determine the atoms of C,H & O

3.91 x 10 23 , 7.83 x 10 23 atoms of C & O, 1.57 x 10 24 atoms of Hydrogen

atomic mass

The average mass of all the isotopes of an element

Find the number of molecules in 0.25 mol of C6H12O6. Determine the atoms of C,H & O

1.51 x 10 23 molecules of C6H12O6, 9.03 x 10 23 atoms of C & O, 1.81 x 10 24 atoms of H

molar mass

the mass of one mole of a molecule/compound