Topic 3 - Part 2: Formulae & The Mol
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How do you do mol ratio/make balanced equations?
Make it balanced For example: H2 + O2 —> H2O We want to make it so there is the same number of each element on each side To change it you put the number you want to multiply it by INFRONT of the element or formula So it would become: 2H2 + O2 —> 2H2O Now it’s balanced For more complicated group anything you ca together and count it as one lol with a compound that appears on both sides ????? Note: the number infront multiplies everything after it until a new element or compound is added on
What is the equation for mol, concentration, and volume?
n = c v
What is n?
Number of moles
What is c?
Concentration (moll-1)
What is v?
Volume (HAS TO BE LITRES) It will mostly be in centimetre cubed to change make it so that the value is multiplied by 10 -3
What does saturated mean?
A solution into which as much solute as possible has dissolved (can vary with temperature)
What are the state symbols (list)?
Solid = s Liquid = l Gas = g Solution = aq