Chemistry, 09.09.2020 05:01 leonardoocampo7555
Fossils are often the hard parts of once-living things. But an organism’s soft parts can also be preserved. Which materials can preserve soft parts? Select all the answers that apply. A. ice B. amber C. sand D. rock
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Chemistry, 22.06.2019 22:30
3.09 lab: reaction of metals 1 which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.
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Chemistry, 23.06.2019 07:40
What is the reduction potential of a hydrogen electrode that is still at standard pressure, but has ph = 5.65 , relative to the she?
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Chemistry, 23.06.2019 10:30
Most ionic compouds are crystalline solids at room temperature. true falseionic compounds are electrically neutral. true falseionic compounds generally have low melting points. true falsewhen melted, ionic compounds do not conduct electricity. true falsethe electrostatic attraction between an anion and a cation is an ionic bond. true false
Answers: 1
Chemistry, 23.06.2019 11:50
What is the oxidation half-reaction for this unbalanced redox equation? cr2o72– + fe2+ → cr3+ + fe3+ cr3+ → cr2o72– cr2o72– → cr3+ fe3+ → fe2+ fe2+ → fe3+?
Answers: 2
Fossils are often the hard parts of once-living things. But an organism’s soft parts can also be pre...
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