A gas mixture of He and Ar has a total pressure of 4.10 atm. What is the mole fraction of Ar if the partial pressure of Ar is 1.50 atm

About 70 percent of the earth's surface is water-covered, and about 96.5 percent of all earth's water is salt water. identify the watery feature on earth that is made of freshwater rather than salt water. a) bay b) glacier c) ocean d) sea it is not incomplete this is the true question

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?

How many moles are in 1.26*10^24 particles in significant figures