Chemistry, 04.01.2021 01:00 emilysmith20044
Which of the following BEST describes a way in which water moves in the water cycle?
A. Water falls from the sky as rain. It stays where it falls until it evaporates
B. Water falls from the sky as snow. As the snow melts, the water runs up to Earth's mountains.
C. Water falls from the sky as rain. The water then flows downhill
D. Water falls from the sky as hail. The hail is eventually buried in the ground
Answers: 3
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Asample of the male sex hormone testosterone, c19h28o2, contains 3.88×10^21 atoms of hydrogen.(a) how many atoms of carbon does it contain? (b) how many molecules of testosterone does it contain? (c) how many moles of testosterone does it contain? (d) what is the mass of this sample in grams?
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Chemistry, 21.06.2019 23:00
Which statement describes covalent bases? they have hydroxide ions. they produce hydrogen ions. they are often amines. they are named the same as ionic compounds.
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Most materials are not magnetic because their magnetism has worn off. their magnetic domains are arranged randomly. they lack magnetic fields. earth’s heat has destroyed their magnetism.
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Chemistry, 22.06.2019 15:00
Areaction is first order with respect to reactant x and second order with respect to reactant y. which statement describes the rate law for this reaction?
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Which of the following BEST describes a way in which water moves in the water cycle?
A. Water falls...
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