a sample of hydrogen at 1.65 atm had its pressure decreased to 0.454 atm producing a new volume of 755 ml. what was its original volume (v^1)

What is the relationship between the wavelength of a wave and it's energy?

What are the factors that affect the resistance of a wire?

At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid