considering the temperature vs. time graph below, how does the temperature at the beginning of a change of…

considering the temperature vs. time graph below, how does the temperature at the beginning of a change of state compare with the temperature at the end of the change? temperature vs. time temperature (°c) 140 120 100 80 60 40 20 0 -20 1 2 3 4 5 time (min) → the temperature is always lower. the temperature is always the same. the temperature is usually lower. the temperature is usually higher.

considering the temperature vs. time graph below, how does the temperature at the beginning of a change of state compare with the temperature at the end of the change? temperature vs. time temperature (°c) 140 120 100 80 60 40 20 0 -20 1 2 3 4 5 time (min) → the temperature is always lower. the temperature is always the same. the temperature is usually lower. the temperature is usually higher.

Answer

Answer:

B. The temperature is always the same.

Explanation:

Step1: Identify change - of - state regions

Regions 2 and 4 are change - of - state regions.

Step2: Observe temperature values

In region 2 (melting), temperature is constant. In region 4 (boiling), temperature is constant.

Step3: Compare start and end

For any change - of - state process shown, temperature at start = temperature at end.