Cate grame de hydrogen se gasesc in 2 moli de apa?

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7.In cati moli de sulfat de zinc se gasesc 130 grame zinc?

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Mihaiimbrisca Mihaiimbrisca · Answer 1 · 2020-05-14T19:50:35+03:00

Răspuns:

MH2O =2+16=18

1molH2O.......2gH

2moliH2O........xgH

x=2×2/1=4g

MZnSO4=65+32+4×16=131

1mol ZnSO4............65gZn

ymoliZnSO4............130

y=130×1/65=2moli ZnSO4

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