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Chemistry: Post your doubts here!

Someone please help if you dont mind. I know its something simple, just having difficulty seeing what Ive done wrong. Based off the marking scheme, Im not sure why the number of moles HCl is .008.
- msucurt
- Post #16,343
- May 9, 2017
- Forum: A-Levels
M
Chemistry: Post your doubts here!

Could someone please help with a calculation from Paper 3 (may/june_2009). Its the calculations portion of question #1. Ive attached my work. The question is a titration of borax vs HCl. I am having difficulty understanding where the .008moles HCl come from on the mark scheme on #1c(i). I am...
- msucurt
- Post #16,320
- May 5, 2017
- Forum: A-Levels
M
Chemistry: Post your doubts here!

thanks so much!
- msucurt
- Post #16,319
- May 5, 2017
- Forum: A-Levels
M
Chemistry: Post your doubts here!

Could someone please help me with a problem on May/June 2014/P23...question #2 I am having difficulty understand (iv). It says, "Calculate the amount, in moles, of ammonium ions in the sample of the double salt'. From what I see on the marking scheme, it is saying the NH4+ react with the H+ in a...
- msucurt
- Post #16,292
- Apr 26, 2017
- Forum: A-Levels
M
Solved chem paper 5s

that would be great. Anyone with a current link or solved paper 51's ?
- msucurt
- Post #25
- May 19, 2014
- Forum: A-Levels

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