Chemistry, 14.10.2019 03:30, kaitlyn114433
The atomic mass of an element is the weighted average mass of the isotopes of that element. (true or false)
atoms with the same number of protons but different number of neutrons are called what? (choices: _isotopes, ions , iosomers)
how many neutrons are in potassium-40? the chemical symbol for potassium is k.
(choices: _19,20,21,40))
Answers: 2
Physics, 08.07.2019 14:50, cggvbfbvrcf
Answers: 1
Chemistry, 27.09.2019 20:30, Cleotilde14151
Answers: 1
Chemistry, 29.09.2019 08:00, blazecarley
Answers: 1
The atomic mass of an element is the weighted average mass of the isotopes of that element. (true or...
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