Ответ:
wh2so4=39.2%
Объяснение:
mH2so4=98×2=196г
wh2so4=196×100/500=39.2%
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Ответ:
wh2so4=39.2%
Объяснение:
mH2so4=98×2=196г
wh2so4=196×100/500=39.2%