Question

. If 20gm of hydrogen is burnt in air the amount of water produced is ( )

a. 100gm b.180gm c.36gm d.18gm​

Answer 1

Answer:

100 grams of water is produced

Plz...Mark me as brainliest

Answer 2

Given:

Amount of hydrogen burnt in the air to produce water = 20 gm

To find:

The amount of water formed by burning 20 gm if hydrogen in air.

Solution:

The complete reaction of hydrogen burning is air is given as:

H2 + ½O2 -----> H2O

2 gm 18 gm

20 gm x gm

We know that to produce 18 gm of water we need 2 gm of hydrogen.

Therefore when we have 20 gm of hydrogen, amount of water formed (x) will be:

x = 18×20/2

x = 180 gm

Thus the correct option is B.