At a pressure of 103 kPa and a temperature of 22oC, 52.9 g of a certain gas has a volume of 31.5 L. What is the identity of this gas?
Chemistry - DrBob222, Monday, September 14, 2009 at 11:47pm
Use PV = nRT
I would change 103 kPa to atmospheres, change 22 C to Kelvin (273 + C = Kelvin), and plug in V, solve for n = number of moles.
Then number of moles = grams/molar mass.
You know moles, you know grams, solve for molar mass, then look on the periodic table to find the name of the element. (Note: I have assumed that this is a gas element, it COULD be CO2 or some other gas. But find the molar mass and then we can figure out what to do if it isn't an element.)
Chemistry - Barb, Saturday, January 4, 2014 at 1:06am
how do you find the molar mass