Question

Equal masses of water at 80°C and paraffin at 20°C are mixed in a container. The specific

heat capacity of water is twice that of paraffin. What is the final temperature of the
mixture?
O 60°C
O 50°C
O 40°C
O 30°C

Answer 1

To find the final temperature of the mixture, we can use the principle of conservation of energy and calculate the heat gained by the water and the heat lost by the paraffin.

Step-by-step explanation:

To solve this problem, we can use the principle of conservation of energy, which states that the heat gained by one object is equal to the heat lost by the other object.

First, let's calculate the heat gained by the water. We can use the formula Q = mcΔT, where Q is the heat gained, m is the mass of the water, c is the specific heat capacity of water, and ΔT is the change in temperature.

Next, let's calculate the heat lost by the paraffin. Since the specific heat capacity of water is twice that of paraffin, we can use the equation Q = mcΔT, where c' is the specific heat capacity of paraffin, and solve for ΔT.

Finally, we can use the principle of conservation of energy to set the heat gained by the water equal to the heat lost by the paraffin, and solve for the final temperature of the mixture.