The graph shows the change in temperature of a sample of water in a closed system as thermal energy is added over time.
150°C -
100°C
Temperature (°C)
50°C
0°C-
-50°C
10
50
60
20 30 40
Time (min)
What happens to the temperature of the water when it begins to melt?

When you heat ice, its temperature rises, but as soon as the ice starts to melt, the temperature stays constant until all the ice has melted.

Its C i took the question

Explanation:

the temperature gets to the point of melting and stays the same until it changes state and once it does change state its temperature rises again

image result for how many calories of energy will 20 grams of carbohydrates provide in one gram provides 4 calories

consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.