Question

AN ALLOY CONTAINS 60% COPPER AND 40% NICKEL.A PIECE OF THIS ALLOY OF MASS 50g IS HEATED AT 50°C AND THEN DROPPED INTO A CALORIMETER OF WATER EQUIVALENT 10g CONTAINING 40g OF WATER AT 20°C . WHAT WILL BE THE FINAL TEMPERATURE OF THE MIXTURE?
SPECIFIC HEAT:- COPPER=0.09 CGS
NICKEL=0.11 CGS

Answer 1

You can take zinc as x. The formula is 40%+32%+x%=100%. It is further expanded as 72%+x%=100%. The next step is x%=100%-72%. The mass is 28%. You can convert the mass into grams.

To get the precise answer, we need to convert percentage into decimal. For that, you need to divide 28 by hundred. Finally, you can find the mass as 0.28g

Answer 2

the answer is 22.9...............