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# [HELP] Calculaion/titration questions. Edexcel GCE Chemistry

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Why bother with a post grad course - waste of time? 17-10-2016
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3. i'm not sure but i think; 1a) moles of Li = mass/molar mass= 0.120/6.9= 0.0173
ratio of Li to H is 2:1 so, 0.0173/2= 0.0087 mol of Hydrogen
volume of H= mol/molar volume= 0.0087 * 24 dm3= 0.2 dm3
4. (Original post by f999)
i'm not sure but i think; 1a) moles of Li = mass/molar mass= 0.120/6.9= 0.0173
ratio of Li to H is 2:1 so, 0.0173/2= 0.0087 mol of Hydrogen
volume of H= mol/molar volume= 0.0087 * 24 dm3= 0.2 dm3
Specific temp and pressure though so I ended up going with pv=nRt

Still need help with the second page

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