Question

a gas mixture contains nitrogen and methane in 7:4 ratio by weight the ratio of their molecules is​

Answer 1

Answer:

A gas mixture contains nitrogen and methane in 7:4 ratio by weight the ratio of their molecules is 1:1

Explanation:

Concept-

We know , number of moles = given mass/ Molar mass.

Given- A gas mixture contains nitrogen and methane in 7:4 ratio by weight.

Let the given mass of nitrogen= 7x

Molar mass of nitrogen= 28 g/mol

Number of moles of Nitrogen - 7x/28

Let the given mass of methane = 4x

Molar mass of methane = 16g/mol

Number of moles of methane = 4x/16

Number of molecules in 1 mole= 6.022 × 10^23

So, the ratio of their number of molecules is the same as the ratio of number of moles , as it is directly proportional .

No. of moles of N2 = 7x/28. = 1/1

No. of moles of CH4. 4x/ 16

The ratio of their molecules is 1:1

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