The freezing point of nitrogen is about \( -210^{\circ} \mathrm{C} \). The freezing point of mercury is about \( 171^{\circ} \mathrm{C} \) higher. What is the approximate freezing point of mercury?

To find the freezing point of mercury, you simply add the freezing point of nitrogen to the difference in their freezing points. The freezing point of nitrogen is about \( -210^{\circ} \mathrm{C} \), and the freezing point of mercury is \( 171^{\circ} \mathrm{C} \) higher. So, \( -210^{\circ} \mathrm{C} + 171^{\circ} \mathrm{C} = -39^{\circ} \mathrm{C} \). Thus, the approximate freezing point of mercury is \( -39^{\circ} \mathrm{C} \). However, mercury actually freezes at \( -38.83^{\circ} \mathrm{C} \), which can take you by surprise since this metal is often associated with extreme temperatures! Fun fact: mercury is one of the few metals that remain liquid at room temperature, making it unique in many applications, including thermometers and barometers. Additionally, if you ever find yourself in a situation adding a serious ice sculpture to your next winter gala, remember just how cold that nitrogen is! Understanding freezing points can help avoid disastrous mishaps in partying (or scientific experiments), like using mercury inappropriately. While it’s tempting to play with metals, it’s vital to remember the safety protocols when handling substances in various states.