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Chemistry, 21.06.2019 22:00
Your friend offers to show you an intrusive igneous rock. which of the following would you expect to see?
Answers: 1
Chemistry, 22.06.2019 22:00
The volume of an unknown substance in a sealed glass jar is 50 milliliters. the volume of the jar is 200 milliliters. which state of matter could the substance be?
Answers: 2
Chemistry, 23.06.2019 01:30
Which statement accurately represents the arrangement of electrons in bohr’s atomic model?
Answers: 2
Chemistry, 23.06.2019 06:30
Acertain atom has 22 protons and 19 electrons. this atom loses an electron. the net charge on the atom is now 4+1+01-4-. if this same atom with 22 protons and 19 electrons were to gain 3 electrons, the net charge on the atom would be 3+2+02-3-.
Answers: 1
Đốt cháy hoàn toàn 9.2 gam rượu etylic a, tính thể tích khí co2 tao ra ở điều kiện tiêu chuẩn b, tín...
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