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Q1. (b)-0.08M ethanoic acid/0.02M potassium ethanoate mixture = 0.1M (c)-0.8M ammonia/0.2M potassium ethanoate mixture = 1M Therefore the ammonia/potassium ethanoate mixture has the largest buffering capacity ...? But then ... Q2. (b) 0.01 M ammonium chloride/0.01M ammonia mixture =...

Hi there I was wondering if anyone could help me with this buffers question ... For which of these liquids is the pH likely to change least if a splash of concentrated sulphuric acid is added? Justify your answer: a) 0.1M hydrochloric acid solution b) 0.08M ethanoic acid/0.02M potassium...

0.08125 = 2.24x10^-11J / 0.17kg => 0.08125/1.20545x10^-18 =6.16x10^8 (3sf) Thank you Kurdt!

The correct answer is: 6.2x10^8

I just came across another question that I'm stuck with ... I'm new to this forum, and so I hope its ok for me to post this question here? "A beam of nuclei is used for cancer therapy. Each nucleus has an energy of 140 MeV, and the relative biological effectiveness (RBE) of this type of...

Ohh! I see ... Thank you so much! :)

Hi there, I was wondering if anyone could help me with this question ... "A device used in radiation therapy for cancer contains 0.50g of cobalt (60-Co-27). The half life of cobolt is 5.27 years. Determine the activity of the radioactive material." Working out: (To find the decay...