Question

4 grams of hydrogen reacts with some oxygen to make 36 grams of water. Figure out how much oxygen must have been used by applying the law of conservation of mass?

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Answer 1

Answer:

16 gram per oxygen molecule

Explanation:

hydrogen=4 gram

total=36 gram

oxygen=o

4H+O2->2H2O

4*1+2o->36

2o->36-4

o->32/2

o->16 gram

#Hopeithelps!!!

Answer 2

Answer:

32gms

Explanation:

Normally,

8gms of Hydrogen reacts with 32gms of oxygen to give 40gms of water.

But if 4gms of hydrogen reacts to get 36gms of water then,

amount of oxygen required = 32gms

Now, according to law of conservation of mass

4+32=36

The compound formula is H2O2