Question

7. One part by weight of hydrogen is
equivalent to :
(a) 18 parts by weight of water.
(b) 8 parts by weight of silver.
(c) 108 parts by weight of silver.
(d) 16 parts by weight of oxygen.​

Answer 1

Answer:

d

Explanation:

because 2mutipli 8 =16

Answer 2

Option (d) 16 parts by weight of oxygen is correct.

GIVEN

One part by weight of hydrogen.

TO FIND

One part by weight of hydrogen is

equivalent to which among the given option.

SOLUTION

We can simply solve the above problem as follows;

We know that,

The molecular weight of the Hydrogen molecule = 2 grams

Therefore,

One part by weight of Hydrogen = 1/2

Now,

(a) 18 parts by weight of water.

Weight of 1 molecule of water = 18 grams

18 parts by weight of water = 18/18 = 1

Hence, Option (a) is incorrect.

(b) 8 parts by weight of silver.

Weight of 1 molecule of Silver = 108 grams

8 parts by weight of silver = 8/108 = 1/12

Hence, Option (b) is incorrect.

(c) 108 parts by weight of silver.

The molecular weight of silver = 108 grams

108 parts by weight of silver = 108/108= 1

Hence, option (c) is incorrect.

(d) 16 parts by weight of oxygen.

Weight of 1 molecule of oxygen = 32 grams

16 parts by weight of Oxygen = 16/32 = 1/2

Hence, Option (d) 16 parts by weight of oxygen is correct.

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