Question

Mass of 112 ml of a certain gas is 0.22g at stp. How many molecular s are their in the sample of gas? What is the molar mass of the gas?

Answer 1

Explanation:

Given,

mass of the given gas, m = 0.22 g

volume of the given gas, V = 112 ml or 0.112 L

To Find,

☛ number of molecules of the given gas present

☛ molar mass of the gas

Solution,

We know,

On substituting the values, we get

after this check the attached file above and continue.... from here then

Now,

1 mol = 6.022 × 10²⁴ atoms / molecules

0.005 mol = 6.022 × 0.005 × 10²⁴

➜ 6.022 × 5 × 10²¹

➜ 30.11 × 10²¹ molecules

Also,

No. of moles = Mass given / Molar mass

☛ 0.005 = 0.22 / molar mass

☛ molar mass = 0.22 / 0.005

☛ molar mass = 44 g

check the attached file above also

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Answer 2

Explanation:

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