How many molecules are present in a $20*g$ mass of $"carbon dioxide"$?

Md Ariful Islam

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Md Ariful Islam

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$"Avogadro's number"$ $=$ $6.022xx10^23*mol^-1$.

Now, in $44*g$ of gas there are $"Avogadro's number"$ of molecules by definition.

And thus $6.022xx10^23*mol^-1$ $xx$ $(20*g)/(44.0*g*mol^-1)$ $~=$ $3.0xx10^23" carbon dioxide molecules"$. You can make a better estimate.

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