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The specific heat of a metal is 0.16 cal g-1. The equivalent mass of the metal is 20.04. What is the correct atomic mass of the metal in grams?

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answer is 40.08.

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Detailed Solution

Following Dulong-Pettit law, approx. atomic mass=6.4 Specific heat =6.40.16=40 Valency of the metal =40 Equiv.mass =4020.04=2.Correct atomic mass =valency × eq. mass = 2 × 20.04 = 40.08 g

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The specific heat of a metal is 0.16 cal g-1. The equivalent mass of the metal is 20.04. What is the correct atomic mass of the metal in grams?