One litre of water at 30 °C is mixed with one litre of water at 50 °C. The temperature of the mixture will be
A. 80 °C
B. more than 50 °C but less than 80 °C
C. between 30 °C and 50 °C
D. less than 30 °C
Answer:C
One litre of water at 30 °C is mixed with one litre of water at 50 °C. The temperature of the mixture will be
A. 80 °C B. more than 50 °C but less than 80 °C C. between 30 °C and 50 °C D. less than 30 °C