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Can someone explain to me how to do this??!!!

Can someone explain to me how to do this??!!!
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Can someone explain to me how to do this??!!!

Can someone explain to me how to do this??!!!-example-1
User SBB
by
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1 Answer

6 votes
Al is 1.
As for NO3,it is one entity, an the whole thing is being multiplied by 3. Use the distributive property from math.
N is 3.
And O is 9.
In total, there are 13 atoms.
User Robert Mooney
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