Массовая доля кислорода в серной к-те 1. 65,3 % 2. 50% 3. 35,5% 5.32,6%

Массовая доля кислорода в серной к-те
1. 65,3 % 2. 50% 3. 35,5% 5.32,6%
- Предмет:
  Химия
- Автор:
  dreameyfoxk
- 6 лет назад

Ответы 2

около 65
молярная масса серной кислоты=98г/моль
формула Н2SO4
кислорода там 4 атома.
4*16=64
64/98 *100=65,3%
- Автор:
  flores
- 6 лет назад
- 0
Mr(H₂SO₄) = 1*2+32+16*4 = 98
ω(H) = 2/98*100% = 2,04%
ω(S) = 32/98*100% = 32,65%
ω(O)= 64/98*100% = 65,31%
Ответ: 1) массовая доля кислорода 65,3%
- Автор:
  encarnaciónholmes
- 6 лет назад
- 0
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Массовая доля кислорода в серной к-те 1. 65,3 % 2. 50% 3. 35,5% 5.32,6%

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Массовая доля кислорода в серной к-те
1. 65,3 % 2. 50% 3. 35,5% 5.32,6%