I think I got the answer now. My formula was indeed wrong. Thanks!gneill said:Hi Angelina21,
Welcome to Physics Forums!
PV = nRT
You can't simply replace n (number of moles) with density. Try expressing n in terms of things you know about helium in general and the helium in this case.
The temperature of helium can vary depending on factors such as pressure and location. However, at standard pressure and room temperature (25°C), the temperature of helium is -269°C.
The temperature of helium is so low because it is a gas with very low atomic mass. Atoms with lower masses have higher velocities, resulting in lower temperatures.
Yes, the temperature of helium can be changed by altering the pressure and volume of the gas. When compressed, the temperature of helium increases, and when expanded, the temperature decreases.
Temperature plays a significant role in the properties of helium. As the temperature decreases, helium can transition from a gas to a liquid and eventually a solid. This change in state also affects its density and other physical properties.
According to the ideal gas law, there is an inverse relationship between temperature and pressure for helium. As the temperature decreases, the pressure decreases, and vice versa.