Which substance is a gas at 45 degrees C
It depends on the pressure. At atmospheric pressure, many gases would be in the gaseous state at 45 degrees Celsius, including nitrogen, oxygen, carbon dioxide, helium, hydrogen, and many more. However, at higher or lower pressures, the boiling point of a substance can change, and it may be in a different state of matter.
At 45 degrees Celsius, several substances can exist as gases. Some common examples include:
1. Nitrogen (N2) - Nitrogen gas has a boiling point of -196 degrees Celsius, so it exists as a gas at 45 degrees Celsius.
2. Oxygen (O2) - Oxygen gas has a boiling point of -183 degrees Celsius, so it also exists as a gas at 45 degrees Celsius.
3. Carbon dioxide (CO2) - Carbon dioxide gas has a boiling point of -78 degrees Celsius, so it remains a gas at 45 degrees Celsius.
These are just a few examples, and there are many other substances that can exist as gases at 45 degrees Celsius. The state of a substance (gas, liquid, or solid) depends on various factors such as pressure and temperature.