Moles of gases.pptx

STOICHIOMETRY

1. Moles of gases

2. Gases In gases, the particles of a substance are far apart and moving.

3. Gases Gas particles expand to fill the container they are in. When the particles hit the sides of the container they exert a f_____ on the container The total f_____ of all these collisions is called the p_______ of the gas

4. Temperature and pressure The pressure of a gas depends on how many particles there are and how fast they are moving If I h____ the particles they move faster, collide with the walls of the container m______ If the size of the container can change, the v_______ will increase and the p_____ will stay the same If the size of the container can’t change, the v_____ stays the same and the p______ increases

5. Volume of gas The volume of a gas is governed by three things – its pressure, its temperature and the number of the particles If volume, pressure and temperature are all the same, we have the same number of particles no matter what the particles are. As chemists, we count particles in moles One mole of any gas occupies the same volume at the same temperature and pressure

6. Room Temp and Pressure (RTP) Room temperature and pressure (RTP) is defined as 25°C and 1 atmosphere pressure At RTP, I mole of any gas occupies 24dm 3 Moles = vol of any gas at RTP 24

7. Calculations

8. Answers

9. Answers