AbhiramAkella
17.09.2021 •
Chemistry
2.2 A concentration perchloric acid solution has a density of 1.67 g/mL at 25°C and is II.7 M. What is the percent by mass of HCIO2 in the solution? (3 marks)
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Ответ:
1 mol 32.0 g
? mol 24.0 g
mol = 24.0 * 1 / 32.0
= 0.75 moles
1 mol 22.4 L ( at STP )
0.75 moles --- ?
v = 0.75 * 22.4 / 1
v = 16.8 L
hope this helps!