QUESTION ABOUT HEAT ENERGY IN JOULES

Question

Given the following information for substance X:

Specific Heat (c) of solid phase: 2.0 J/g°C

Heat of Fusion (Lf): 100 J/g

Specific Heat (c) of liquid phase: 5.0 J/g°C

Heat of Vaporization (Lv): 1000 J/g

Specific Heat (c) of vapor phase: 1.0 J/g°C

Calculate the total heat energy in Joules needed to convert 39.4. g of substance X from -15 °C to 73 °C?

Type your answer with 3 sig figs

Answer 1

To convert 39.4 g of X at -15ºC to 73ºC will require several steps. Unfortunately, you did not provide the freezing point (melting point) nor the boiling point. Therefore, the question can't be answered until we have that information.