Answer:
It pushes back with equal force.
Explanation:
This is pretty much newton's first law.
The answer to this would be promptly A.
A substance cannot be a gas or a mixture. A pure<span> substance is something that occurs in nature. An element is made up of one type of atom only and cannot be split further. A compound has the combined properties of the elements from which it is made.
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For moles to grams would be the mole which is 7.9*10^-1 times the molar mass of argon