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Quantitative chemistry - Coggle Diagram
Quantitative chemistry
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Percentage by mass
% by mass = (total relative formula mass of element in the compound/total relative formula mass of compound) x 100
Relative formula mass
Multiply the element’s relative atomic mass by the amount of times it occurs in the compound, do this for each element, add the sums together
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Empirical formulae
If you have the mass or % by mass of every element in a compound, you can calculate its empirical formula
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Gas volumes calculations
Use moles as an intermediary. Convert all possible given amounts into moles using the following formulae
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Then form a balanced equation and multiply the number of moles you have found out depending on the ratio in the equation
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