60.2k views
2 votes
Calculate the amount of energy needed to convert 14.0 g of water at 32.0 °C to steam at 100.0°C. a. 2,580 J b. 1,960 J c. 3,740 J d. 4,820 J

User Kube
by
7.9k points

1 Answer

4 votes

Final Answer:

The amount of energy needed to convert 14.0 g of water at 32.0 °C to steam at 100.0 °C is 2,580 J (Option A).

Step-by-step explanation:

The process involves two steps: heating the water from 32.0 °C to its boiling point at 100.0 °C, and then converting it into steam.

Energy to Heat Water:

Use the formula q = mcΔT, where q is the heat energy, m is the mass, c is the specific heat capacity, and ΔT is the temperature change. Calculate the energy required to heat the water from 32.0 °C to 100.0 °C.

Energy to Convert to Steam:

Use the formula q = mL, where L is the heat of vaporization. Calculate the energy needed to convert water at 100.0 °C to steam.

Add the energies from both steps to get the total energy needed.

Option A is the answer.

User Cavila
by
7.1k points