An astronaut receives the energy required in his body by the combustion of 34g of sucrose per hour. How much oxygen he has to carry along with him for his energy requirement in a day?

Explanation

Wt. of sucrose required per day = `34xx24` = 816gm
Moles of sucrose = `W/(M.Wt.)=816/342=2.385`
Sucrose react with oxygen as follows.
`C_(12)H_(22)O_(11)+12O_(2)to12CO_(2)+11H_(2)O`
According to the above reaction
1 mole sucrose requires - 12 moles of `O_(2)`
2.385 moles requires = `(2.385xx12)/1=28.63`
Wt. of oxygen = No. of moles `xx` Mol. Wt.
`=28.63xx32=916.2`gm.