Question

imi trebuie la chimie
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Answer 1

1)

2g H...........18g H2O

10g H..............x

x=10*18/2 = 90g H2O

2)

4g H...........16g CH4

10g H..................x

x = 10*16/4 = 40g CH4

3)

3g H................30g AlH3

10g H.............x

x=10*30/3 = 100g AlH3

4)

5g H...........35g NH4OH

10g H.............x

x = 10*35/5 = 70g NH4OH

5)

22g H.........342g C12H22O11

10g H............x

x=10*342/22 = 155,45g H