1.

2H2o (3gram) + O2 ( 28gram) -> 2H2o calculate left mole​

Answer»

Answer:

H

2

+

2

1

O

2

→H

2

O

1 mole of H

2

combines with a HALF mole of O

2

to form one mole of H

2

O.

The molecular WEIGHTS of H

2

, O

2

and H

2

O are 2 g/mol, 32 g/mol and 18 g/mole respectively.

2 g (1 mole) of H

2

combines with 16 g (half mole) of O

2

to form 18 g (one mole) of H

2

O.

We have 16.0 H

2

is MIXED with 16.0g O

2

Out of this, 2.0 H

2

will COMBINE with 16.0g O

2

since oxygen mass is limited.

18 g (one mole) of H

2

O will be obtained.

Explanation:

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