Answer to Question #82607 in Molecular Physics | Thermodynamics for Lisa

Question #82607

Old trains were powered by steam engines. What was most likely needed to produce the steam to power a train?

a. Ice and a furnace to create water.
b. Water and a way to heat the water.
c. Water and very cold chemical to freeze water.
d. Water vapor and a way to cool it to create water.

Expert's answer

Steam engine probably needs steam for working, and the easiest way to get it is to heat water. Therefore the answer b. looks as the most credible.

The answer:

b. Water and a way to heat the water.