The number of moles of the solute present in 500 ml of 0.6M solution is:

Answer

Heat evolved = 3 kcal

Explanation

`n_(air)=(4.92xx1)/24.6=0.2` mol
`n_(O_2)=0.2xx0.2=0.04 mol, n_c=0.72/12`
`{:(,C" "+,1/2O_2,toCO),("initial mole",0.06,0.04," " 0),("final mole",0,0.01," "0.06):}`
`{:(,CO" "+,1/2O_2,toCO_2),("initial mole",0.06,0.01," " 0),("final mole",0.04,0," "0.02):}`
Heat evolved =`0.04xx25+0.02xx100=1+2=3 kcal`