Gas Laws - SAT Subject Test in Chemistry
Card 0 of 1
Question
Suppose that an ideal gas at 
and 2.0 atm has a volume of 11.2 cubic meters. Which of the following expressions represents the volume of the gas, in cubic meters, if the temperature were increased by 
and the pressure decreased to 1.5 atm?
Suppose that an ideal gas at 
Answer
First of all, the unit degrees Celsius should be converted to Kelvins by adding 273. This means that the temperature increases from 273 K to 323 K.
Next, the combined gas law can be used.
Plugging in the known values gives
and solving for the volume gives
Rearranging shows this is clearly equivalent to the correct answer, 
.
First of all, the unit degrees Celsius should be converted to Kelvins by adding 273. This means that the temperature increases from 273 K to 323 K.
Next, the combined gas law can be used.
Plugging in the known values gives
and solving for the volume gives
Rearranging shows this is clearly equivalent to the correct answer, 
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