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Chemistry, 22.06.2019 20:00
State one important difference between a physical change and a chemical change?
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Astable atom that has a large nucleus most likely contains 1. more neutrons than protons. 2.more protons than neutrons. 3.equal numbers of protons and neutrons. 4.changing numbers of protons and neutrons.
Answers: 1
Chemistry, 24.06.2019 00:00
The concentration of a biomolecule inside a rod-shaped prokaryotic cell is 0.0027 m. calculate the number of molecules inside the cell, which is 4.4 μm long and 1.2 μm in diameter.
Answers: 1
What is the concentration is you dissolve 83 grams of NaCl in 120 ml of water?...
Mathematics, 25.02.2020 07:42
Mathematics, 25.02.2020 07:42
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Mathematics, 25.02.2020 07:47
Mathematics, 25.02.2020 07:47
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