Chemistry, 20.10.2020 23:01 mellobunbun
If you place a piece of zinc metal is placed in a beaker of hydrochloric acid which of
the following will occur?
a) vigorous reaction, accompanied by the evolution of hydrogen
Ob) vigorous reaction, accompanied by the evolution of chlorine
c) reaction of the metal without the evolution of gas
d) no visible reaction
Answers: 3
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Answers: 2
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Which of the following units is not an official si unit? mole liter kilogram ampere
Answers: 1
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Answers: 3
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Which best describes the present-day universe? opaque, expanding very slowly, stars produce heavy elements transparent, expanding at an accelerated rate, stars produce heavy elements opaque, expanding at an accelerated rate, stars produce only hydrogen and helium transparent, expanding very slowly, stars produce only hydrogen and helium
Answers: 1
If you place a piece of zinc metal is placed in a beaker of hydrochloric acid which of
the follow...
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