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Q23: How many constitutional isomers that are trifluoroethanes
Q31: When a carboxylic acid reacts with an
Q61: An average lapse rate of 2.7 °F/1000
Q64: Stars of what magnitude are just barely
Q98: The greater the mass of a star,
Q117: Some people mistakenly call noon and midnight
Q117: Solar system space is occupied by very
Q118: The Japanese word tsunami means "_ wave."
Q119: The _ calendar is most used around
Q145: The branch of astronomy that studies the