A2.62g sample of a substance suspected of being pure gold is warmed to 72.3∘c and submerged into 15.6g of water initially at 24.8∘c. the final temperature of the mixture is 26.0∘c. what is the heat capacity of the unknown substance?

specific heat capacity of the unknown is 629.66 J/kg C

Explanation:

As we know that gold is heated to 72.3 degree C and mixed with water at 24.8 degree C

Now the final temperature of the mixture is 26 degree C

here we can say that heat given by the gold = heat absorbed by the water

So we will have

so we will have

so specific heat capacity of the unknown is 629.66 J/kg C

seeing the graph would