A. 200g
B. 320g
C. 400g
D. 500g
Correct Answer: Option D
D. 500g
Explanation
Heat lost by hot water = Heat gained by cold water
M x 4200 x (100 – 60 = 0.4 x 4200 x (60 – 10)
4200m x 40 = 0.4 x 4200 x 50
40m = 0.4 x 50
m = 0.4×50/40 = 0.5kg
= 500g
![An immersion heater rated 400W, 220V is used to heat a liquid of mass 0.5kg. If the temperature of the liquid increases uniformly at the rate of 2.5ºC per second, calculate the specific heat capacity of the liquid. [Assume no heat is lost]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "An immersion heater rated 400W, 220V is used to heat a liquid of mass 0.5kg. If the temperature of the liquid increases uniformly at the rate of 2.5ºC per second, calculate the specific heat capacity of the liquid. [Assume no heat is lost]")
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