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MissPhiladelphia

To determine the moles of C2H6 from the number of molecules, we use the avogadro's number to relate moles into molecules. From avogadro's number, 1 mol is equal to 6.022x10^23 molecules. 

 3.75x10 ^23 molecules C2H6 (1 mol / 6.022x10^23 molecules ) = 0.6227 mol C2H6

Hope this answers the question.

Answer : The number of moles of \(C_2H_6\) is, 0.622 moles

Solution :

As we know that,

1 mole contains \(6.022\times 10^{23}\) number of molecules.

As, \(6.022\times 10^{23}\) number of molecules of \(C_2H_6\) present in 1 mole of \(C_2H_6\)

So, \(3.75\times 10^{23}\) number of molecules of \(C_2H_6\) present in \(\frac{3.75\times 10^{23}}{6.022\times 10^{23}}=0.622\) mole of \(C_2H_6\)

Therefore, the number of moles of \(C_2H_6\) is, 0.622 moles

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