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Chemistry, 22.06.2019 10:50
An atom of lithium-7 has an equal number of(1) electrons and neutrons(2) electrons and protons(3) positrons and neutrons(4) positrons and protons
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Chemistry, 22.06.2019 18:00
The fact that the total amount of energy in a system remains constant is a(n)
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Chemistry, 23.06.2019 01:30
Concentrations expressed as a percent by mass are useful when the solute is a a. liquid b. gas c. solid
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Chemistry, 23.06.2019 05:30
The term gas is limited to those substances that exist in the gaseous state at
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Mathematics, 30.07.2019 19:40
Mathematics, 30.07.2019 19:40
Mathematics, 30.07.2019 19:40
Mathematics, 30.07.2019 19:40
History, 30.07.2019 19:40