If the specific heat of a metal is 0.850 j/g °c, what is its atomic weight?

As we know that with respect to oxygen atom taken as reference the product of atomic mass and specific heat of a metal will remain constant.

this product is equal to 0.38

so here we will say that let atomic mass of the metal is M

so with respect to oxygen atom its mass is given as

now we will have

now we will have

so atomic mass of the metal is 7 g/mol

Its atomic weight is 0.00753N

Explanation:

Dulong and Petit law states that atoms of all elements have the same heat capacity so their specific heat is inversely related to their respective atomic weights.

       i.e      

where is the specific heat of the object and is the atomic weight of the object.

       ⇒ × = constant = 6.4

= 0.850J/g°C = 850 J/KgK

              =

                   = 0.00753N

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