Chemistry, 11.03.2021 16:30 prettygirllniyiaa
Choose the terms that correctly complete the paragraph.
Emily was interested in how geologists date rocks and she learned about two ways of dating rocks. She learned that potassium-40 is used to find the
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for ancient rocks, because it has a long
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. Carbon-14 is used for dating much
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rocks due to its shorter
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.
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Chemistry, 22.06.2019 22:30
Which one of the following bonds would you expect to be the most polar? a) b–h b) n–h c) p–h d) al–h e) c–h
Answers: 1
Chemistry, 23.06.2019 00:20
4. propanol and isopropanol are isomers. this means that they have a) the same molecular formula but different chemical properties. b) different molecular formulas but the same chemical properties. c) the same molecular formula and the same chemical properties. d) the same molecular formula but represent different states of the compound
Answers: 3
Chemistry, 23.06.2019 01:00
Which of the following is a physical change? a.burning a piece of wood b.sawing a piece of wood in half c.rust forming on an iron fence d.a copper roof changing color from orange to green
Answers: 1
Chemistry, 23.06.2019 01:30
In which phase of mitosis do the spindle fibers pull the chromosomes apart to opposite sides of the cell ?
Answers: 1
Choose the terms that correctly complete the paragraph.
Emily was interested in how geologists date...
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