Question

.1.5g of Carbon is burning completely in 4g of Oxygen produces 5.5g of
Carbon dioxide. The amount of Oxygen left if 9g of Carbon burns in 100g of
Oxygen is.
76g
88g
78g
70g
(plz give correct answer )

Answer 1

1.5g of Carbon is burning completely in 4g of Oxygen produces 5.5g of

Carbon dioxide. The amount of Oxygen left if 9g of Carbon burns in 100g of

Oxygen is.

76g

88g

78g

70g

Answer 2

The correct option regarding the oxygen left is 76g.

Given:

1.5g of Carbon is burning completely in 4g of Oxygen produces 5.5g of Carbon dioxide.

To Find:

The amount of Oxygen left if 9g of Carbon burns in 100g of Oxygen.

Solution:

To find the amount of Oxygen left if 9g of Carbon burns in 100g of Oxygen we will follow the following steps:

As we know,

1.5 g of carbon requires 4g of oxygen.

1g of carbon will require oxygen =

$\frac{4}{1.5} g$

Now,

9g of carbon will require oxygen =

$\frac{4}{1.5} \times 9 = 24g$

So,

Total oxygen is given = 100g

Oxygen left = Total oxygen - oxygen left

Oxygen left = 100 - 24 = 76g

Henceforth, the correct option regarding the oxygen left is 76g.

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