`1 g` of a metal (specific heat `= 0.06cal//g`), combines with oxygen to form `1.08g` of oxide. What is the atomic mass of metal? Also report its valency.

Explanation

Eq. of metal `=` Eq. of oxygen
wt. of metal `= 1g`, wt. of oxygen`=1.08-1=0.08g`
`(1)/(E_("metal"))=(0.08)/(8)`
`:. E_("metal")=100`
Also App.at.wt `xx` sp.heat`=6.4`
`:.` App. at.wt`=(6.4)/(0.06)=106.67`
`:'` Valence`=(at.wt.)/(Eq.wt.)=(106.67)/(100)=1("integer")`
Exact at.wt.`=E xx"valence"=100xx1=100`