Quantitative Chemestry Memorisation

Question 1

Moles

Answer 1

Mass
————
RFM*moles

Question 2

RFM

Answer 2

Sum of atomic masses in formula
Do not include big numbers, only small

Question 3

Convert 1mg to g

Answer 3

0.001g

Question 4

Deducing the balancing numbers in an equation from reacting masses
The balancing numbers in a chemical equation can be calculated by calculating the moles of the substances in the reaction. In order to do this:

Answer 4

1 Calculate the moles of each substance (using moles = Mass,
2 Find the simplest whole number ratio of these mole values by dividing all the mole values by the smallest mole value