Chemistry, 14.07.2019 11:30 diamond2738
Which of these redox reactions is spontaneous as written? a. ni + zn2+ → ni2+ + zn b. mg + li+ → mg2+ + li c. cu + au3+ → cu2+ + au d. zn + ca2+ → zn2+ + ca
Answers: 1
Chemistry, 22.06.2019 03:00
Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.
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Chemistry, 22.06.2019 08:30
What method(s) do plants use to obtain nitrogen? select all that apply. absorb it from the atmosphere use bacteria to convert nitrogen to usable form obtain usable nitrogen compounds from the soil absorb nitrogen from water taken in at the roots
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Chemistry, 23.06.2019 02:00
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
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Chemistry, 23.06.2019 04:00
Which method would be best to separate a mixture of sand and gravel
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Which of these redox reactions is spontaneous as written? a. ni + zn2+ → ni2+ + zn b. mg + li+ →...
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