Answer:
136
Explanation:
The Mass Number is the combination of the amount of Protons and Neutrons in an element, so if the total mass is 222, and the amount of protons is 86, then you can do 86 + x = 222 to find that x is equal to 136
The answer is intermediate, so E.
You tryna cheat? I think it’s four so hopefully not
(B), because 1.0 moles would be 6.02 x 10^23 molecules. So you have half a mole.<span>
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Just breaking stuff so yea that’s it
