Question

Hydrogen has a melting point of -259 °C, and a boiling point of -253 °C. Its density at liquid state is 0.07 g/cm³. What is the physical state of Hydrogen at -250 °C? Explain your answer.

Answer 1

Step-by-step explanation:

Remark

-250, if you can believe it, is actually warmer than - 253. At -250 the hydrogen has gone through a phase change (a phase change means that it has gone from a liquid to a gas).

From here on as far as you are concerned, the hydrogen will stay as a gas. Later on, if all other things remain constant, you will learn that hydrogen can do some very strange things.