Question

While conducting a lab experiment, Ali calculated that 8.20 E7 J of heat were needed to evaporate 38.6 kilograms of an unknown substance at its boiling point. What is the latent heat of vaporization of the substance?

Answer Choices
2.12 E6 J/kg
4.71 E6 J/kg
3.12 E6 J/kg
6.48 E6 J/kg

Answer 1

Step-by-step explanation:

You are given J and kg and want J/kg

so

8.2 x 10^7 J / 38.6 kg =~ 2.12 x10^6 J/kg