vickye146
10.04.2020 •
Mathematics
If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (c circle d) (x)?
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Ответ:
moles HCl = 101.2 g /36.461 g/mol=2.78
[H+]= 2.78 mol/ 150 L =0.0185
pH = - log 0.0185=1.73
1.73 is the answer