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Year 10 C Pathway Mr. D. Patterson
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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
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What affects the volume of a gas? Equal volumes of gases at the same temperature and pressure have the same number of particles
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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
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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?
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What affects the volume of a gas? Increasing the outside pressure decreases the volume Increasing the temperature increases the volume
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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
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Example problem A gas container holds 500ml of hydrogen gas at STP. How many moles of hydrogen gas is in the container?
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Example problem 3 moles of oxygen is used to combust carbon at STP. What volume of oxygen is required?
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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
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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
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Example Problem What volume of oxygen gas is required to produce 2 L of carbon dioxide gas when combusting methane? Volume to moles
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Example Problem What volume of oxygen gas is required to produce 2 L of carbon dioxide gas when combusting methane? Moles to Moles
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Example Problem What volume of oxygen gas is required to produce 2 L of carbon dioxide gas when combusting methane? Moles to volume
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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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