Calculations
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Which is the appropriate triangle to use for calculations about solutions?
The equations for this are n = C x V C = n / V V = n / C Remember that volume HAS TO BE IN LITRES
What is the appropriate triangle to use for calculations about mass?
How do you calculate th gram formula mass (GFM) of a substance?
• Have correct formula for substance • Identify the different types of atom in formula • Correctly count the number of each type of atom • Multiply the number of each type by the correct RAM value (given in data booklet) • Add up all the numbers and add g (grams) at end
What is the appropriate equation to use when dealing with titrations?
At Nat 5 one solution will always be an acid and the other an alkali The n value is just the number in front of each of these substances in the balanced equation. The Volume her does not have to be in litres but needs to be in the same units on each side
