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rmccabe916
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Recently, I have been studying for a chemistry placement exam for college. On the sample exam (which I have been studying with), one of the questions asks, "Which of the following substances is a gas at 20 degrees Celsius and one atmosphere of pressure?
A.) O3
B.) C
C.) I2
D.) Ca
The answer to the question was O3, but I really don't know why. Is this some kind of given that needs to be memorized, or do I need to do some work to get to the answer? (I can reason out Ca though.)
Thanks for your help,
Ryan
A.) O3
B.) C
C.) I2
D.) Ca
The answer to the question was O3, but I really don't know why. Is this some kind of given that needs to be memorized, or do I need to do some work to get to the answer? (I can reason out Ca though.)
Thanks for your help,
Ryan