Linking Moles, Mass & Mr

Linking Moles, Mass & Mrvideo

Linking Moles, Mass & Mr

• Although elements and chemicals react with each other in molar ratios, in the laboratory we use digital balances and grams to measure quantities of chemicals as it is impractical to try and measure out moles

• Therefore we have to be able to convert between moles and grams

• We can use the following formula to convert between moles, mass in grams and the molar mass

• The mass of 1 mole of a substance is known as the molar mass

• For an element, it is the same as the relative atomic mass written in grams

• For a compound it is the same as the relative formula mass or relative molecular mass in grams

Formula triangle for moles, mass and molar mass