Question

total no of protons in 2 g of CH4 is

Answer 1

Mole = 2 ÷ 16 = 0.125 mole
So 1 mole have 10 electron
0.125 have 0.125 × 10 = 1.25 electron

No of electron = 1.25 × avagadro number. ...
Hope it helps

Answer 2

The total number of protons is $7.5275\times 10^{23}$

Given-The $2g$ of $CH_4$

Find the number of protons

A stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron.

A molecule is a group of two or more atoms held together by attractive forces known as chemical bonds; depending on the context, the term may or may not include ions that satisfy this criterion

The molecular mass of $CH_4$ is $16g.$ In $16g$ it contains $1$ mole of molecules. The carbon atom has $6$ and hydrogen atom has $1P$ So total number of protons in $1$ molecules is $6+4(1)=10$

Therefore, In one molecule there will be $10$ moles of protons. So in $2$ grams there will be $1.25$ moles of protons.
That will be

$\Rightarrow 1.25\times 6.022\times 10^{23}$

$\Rightarrow 7.5275\times 10^{23}$ protons

Hence, the number of protons is $7.5275\times 10^{23}$

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