Question

How many molecules are in 10.0 moles of c2h6o?

Answer 1

Answer: $6.023\times 10^{24}$

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 Liters at STP and contains avogadro's number $6.023\times 10^{23}$ of particles.

As 1 mole of $C_2H_6O$ molecule contains = $6.023\times 10^{23}$ of molecules

Thus 10 mole of $C_2H_6O$ molecule contains = $\frac{6.023\times 10^{23}}{1}\times 10=6.023\times 10^{24}$ molecules

Thus the number of molecules are in 10.0 moles of $C_2H_6O$ are $6.023\times 10^{24}$

Answer 2

1 mole ----------------- 6.02 x 10²³ molecules
10.0 moles ----------- ( molecules C2H6O)

molecules = 10.0 x ( 6.02 x 10²³ ) / 1

molecules = 6.02 x 10²⁴ / 1

=  6.02 x 10²⁴ molecules of C2H6O