Question

Consider a mixture of 10 billion 02 molecules and 10 billion H2 molecules. In what way is this mixture similar to a sample containing 10 billion hydrogen peroxide (H202) molecules? In what way is it different?

Answer 1

Step-by-step explanation:

Number of oxygen molecules = 10 billion =
`10^9`

Number of hydrogen molecules = 10 billion =
`10^9`

Number of molecules of hydrogen peroxides = 10 billion =
`10^9`

Moles of oxygen gas :
`n_(o_2)`

`(10^9)/(N_A)=(10^9)/(6.022* 10^(23) mol^(-1))=1.6605* 10^(-15) mol`

Moles of hydrogen gas :
`n_(H_2)`

`(10^9)/(N_A)=(10^9)/(6.022* 10^(23)mol^(-1))=1.6605* 10^(-15) mol`

`n_(O_2)=n_(H_2)`

Moles of hydrogen gas :
`n_(H_2O_2)`

`(10^9)/(N_A)=(10^9)/(6.022* 10^(23)mol^(-1))}=1.6605* 10^(-15) mol`

`n_(O_2)=n_(H_2)-n_(H_2O_2)`

Number of moles in hydrogen gas, oxygen gas and hydrogen peroxide is same.

Total number of atoms in
`10^6` molecules of oxygen:

`2* 10^6` (2 atoms in 1 molecule)

Total number of atoms in
`10^6` molecules of hydroegn :

`2* 10^6`(2 atoms in 1 molecule)

Total number of atoms in
`10^6` molecules of hydrogen peroxide:

`4* 10^6` (4 atoms in 1 molecule)

Number of oxygen atoms and number of hydrogen atoms are equal but individually they are not equal to number of atoms in hydrogen peroxide.