Vaishali Bhatia and Rupesh Pathak Solutions for Chapter: Integers, Exercise 8: Maths Connect

The moon experiences many extremes in temperature because it has no atmosphere. For example, on the side of the moon the sun is shining on, the temperature can reach ${260}^{\mathrm{o}}\mathrm{F}$. On the dark side of the moon, it gets as cold as $-{280}^{\mathrm{o}}\mathrm{F}$. How much is the drop in temperature from day to night?

The freezing point of oxygen is $-{217}^{\mathrm{o}}\mathrm{C}$ and hydrogen is nearly $-{259}^{\mathrm{o}}\mathrm{C}$. A lab is lowering the temperature inside a fridge. Which will freeze first? How much colder does it have to be for both to freeze?