Chemistry, 04.07.2019 12:50 chutchinson256
Suppose you have an atom composed of 19 protons, 20 neutrons and 19 electrons. what is the mass of this atom?
Answers: 1
Chemistry, 23.06.2019 04:00, anonymous1813
Achemical reaction is done in the setup shown , resulting in a change of mass. what will happen if the same reaction is done in a sealed container that is placed on the electronic balance?
Answers: 2
Suppose you have an atom composed of 19 protons, 20 neutrons and 19 electrons. what is the mass of t...
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