Question

How many moles of H2SO4 do you have if there are 1.64x10^22 molecules of H2SO4

Answer 1

0.027 moles of $H_{2} S_{} 0_{4}$ if  there are 1.64x$10^{22}$ molecules of $H_{2} S_{} O_{4}$

Explanation:

Data given:

number of molecules of $H_{2} S_{} 0_{4}$ = 1.64 X $10^{22}$

Atomic weight of the sulphuric acid = 98.07 grams/mole

We know that 1 mole of sulphuric acid has 6.022 x $10^{23}$ (Avagadro number) molecules.

so number of moles present in 1.64 X $10^{22}$   molecules is given by:

so to get moles we will use

number of moles = $\frac{number of molecules given}{avagadro number}$

number of moles = $\frac{1.64 X 10^{22} }{6.022 X 10^{23} }$

number of moles = 0.027 moles

So, 1.64 X $10^{22}$  molecules will be there in 0.027 moles of sulphuric acid.