Final answer:
To determine the temperature of the tea when the ice cube has melted, we need to use an equation that relates the heat gained by the ice to the heat lost by the tea. The final temperature of the tea, when the ice cube has just melted, is 12.02°C. To find the final temperature of the mixture once the ice has come to thermal equilibrium with the tea, we can use a general equation.
Step-by-step explanation:
To determine the temperature of the tea when the ice cube has just melted, we need to use the equation that relates the heat gained by the ice to the heat lost by the tea. We can substitute the given values into this equation to find the final temperature of the tea.
According to the given information, the ice cube absorbs 16.7 kJ of heat from the tea. We can then use this value to calculate the change in temperature of the tea. The final temperature of the tea, when the ice cube has just melted, is 12.02°C. If we want to find the final temperature of the mixture once the melted ice has come to thermal equilibrium with the tea, we can use the general equation relating heat gained and heat lost again.