Chemistry, 23.05.2020 04:58 Bayabbay8380
Which type of change can be reversed?
A.)a physical change
B.)a chemical change
C.)a molecular change
D.)an electric change
Answers: 2
Chemistry, 21.06.2019 23:40
If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?
Answers: 2
Chemistry, 22.06.2019 10:50
8) a mixture of he, ne and ar has a pressure of 7.85 atm. if the ne has a mole fraction of 0.47 and 8) ar has a mole fraction of 0.23, what is the pressure of he? a) 4.2 atm b) 3.7 atm c) 5.5 atm d) 2.4 atm e) 1.8 atm
Answers: 1
Which type of change can be reversed?
A.)a physical change
B.)a chemical chan...
A.)a physical change
B.)a chemical chan...
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