## Trending News

Promoted

# Physics question on temperature ?

In a calorimeter, where there are 200 g of water at a temperature of 20 ° C, 300 g of water is poured at a temperature of 100 ° C. What is the final temperature of the 500 g of water, assuming that heat losses are negligible?

### 1 Answer

Relevance

- FiremanLv 71 month agoFavorite Answer
Let the final temperature of the 500 g of water is t*C, by the law of energy conservation:

=>Q(loss by 100*C water) = Q(gain by 20*C water)

=>300 x 10^-3 x 4200 x (100 - t) = 200 x 10^-3 x 4200 x (t - 20)

=>300 - 3t = 2t - 40

=>5t = 340

=>t = 68*C

- Login to reply the answers

Still have questions? Get your answers by asking now.