A self-contained breathing apparatus uses potassium superoxide, `KO_(2)`, to convert the carbon dioxide and water in exhaled air into oxygen, as shown by the equation: `4KO_(2)(s)+2H_(2)O(g)+4CO_(2)(g)to4HCO_(3)(g)+3O_(2)(g)`
How many molecules of oxygen gas will be produced from 0.0468 g of carbon dioxide that is exhaled in a typical breath?

Answer

a

Explanation

`therefore "4 mole "CO_(2)"gives 4 mole "O_(2)`
`therefore ((0.468)/(44))"moles "CO_(2)"will give" (3)/(4)xx(0.468)/(44)"moles "O_(2)`
`=7.977xx10^(-4)"mol"`
`"Number of molecules of "O_(2)=7.977xx10^(-4)xx6.023xx10^(23)`
`=4.8xx10^(20)`