Answer:
the fourth one or the first, but I wouldn't say I'm completely sure.
Explanation:
Neutrons keep the Protons "in check", meaning Protons hold a very strong repulsive positive charge. The Neutrons counteract the repulsive force within a small space to keep the Nucleus stable.
I hope this helps! :)
Answer:
2.7 x 1021=2756.7
Explanation:
I don't know what NiNz is
MH₂ = 2×mH = 2×1g = 2 g/mol
This is the equation balanced:
<span>BaCl2(aq) + Na2CO3(aq) = BaCO3(s) + 2 NaCl(aq)
Then the coefficient in front of Na Cl is 2.
Answer: 2
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