# Year 10 C Pathway Mr. D. Patterson. Outcomes Convert from moles to volume of a gas (and vice versa) at standard temperature and pressure Use the conversion.

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Year 10 C Pathway Mr. D. Patterson

Outcomes Convert from moles to volume of a gas (and vice versa) at standard temperature and pressure Use the conversion of volume of a gas into moles (and vice versa) in stoichiometry problems

What affects the volume of a gas? Equal volumes of gases at the same temperature and pressure have the same number of particles

What affects the volume of a gas? One mole of gas at standard temperature and pressure (STP) takes up 22.7 L STP is at 0 o C and 100 kPa

What affects the volume of a gas? What would happen to the size of a balloon being pulled deep under the ocean? What would happen to the size of a balloon floating high above the clouds?

What affects the volume of a gas? Increasing the outside pressure decreases the volume Increasing the temperature increases the volume

How to calculate the volume of a gas n= number of moles of the gas V = volume of the gas (L) This equation only works at STP

Example problem A gas container holds 500ml of hydrogen gas at STP. How many moles of hydrogen gas is in the container?

Example problem 3 moles of oxygen is used to combust carbon at STP. What volume of oxygen is required?

Mass to moles Moles to Moles Moles to mass Volume to moles Moles to volume Using volume in Stoichiometry Find moles of known Find mass of unknown

Example Problem What volume of oxygen gas is required to produce 2 L of carbon dioxide gas when combusting methane? Moles to Moles Volume to moles Moles to volume

Example Problem What volume of oxygen gas is required to produce 2 L of carbon dioxide gas when combusting methane? Volume to moles

Example Problem What volume of oxygen gas is required to produce 2 L of carbon dioxide gas when combusting methane? Moles to Moles

Example Problem What volume of oxygen gas is required to produce 2 L of carbon dioxide gas when combusting methane? Moles to volume

Outcomes Convert from moles to volume of a gas (and vice versa) at standard temperature and pressure Use the conversion of volume of a gas into moles (and vice versa) in stoichiometry problems Checkpoint 11.3-11.9 Sets 25-29

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