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chloe ko.
christina chow.
mr. doktor's chemistry class
block g

home. mrdoktor.

• At a specific pressure and temperature one mole of any gas occupies the same volume
• at 0°C and 101.3 kPa  1 mol = 22.4L
• This temperature and pressure is called STP (standard temperature and pressure)
• 22.4 L/mol is the molar volume at STP

examples:

• how many litres will 8.5 mol of He_2(g) occupy at STP?

• a certain gas is found to occupy 15.8L at STP. How many moles of gas are there?

• a certain amount of oxygen gas occupies 2.5L. Find the number of moles present and then determine the mass of oxygen. 0₂

2.5L x 1 mol = 0.11mol

                                         22.4L

0.11mol x 11g = 1.2 g

                                             1 mol

~ Chloe Ko