Answer :
Final answer:
The final temperature of a mixture of 1 liter of water at 10°C with 1 liter at 80°C is 45°C, calculated using the principle of heat exchange and the specific heat capacity of water. Therefore the correct option is a. 10° Celsius.
Explanation:
Final Temperature Calculation: When mixing water at different temperatures, we can use the principle of heat exchange. The formula for the final temperature of the mixture is given by the equation Q = mcΔT, where Q is the heat transferred, m is the mass of the water, c is the specific heat capacity of water, and ΔT is the temperature change. By applying this formula, we can determine that the final temperature of the mixture of 1 liter of water at 10°C with 1 liter at 80°C is 45°C.