Answer:
at first i would like to tell which class
Explanation:
125000 is the answwr
uniquely identifies a chemical element. yupppppp
The three isomers of pentane have different structural formulas.
Moles= mass\ relative formula mass(Ar)
moles of zinc= 7.9/30= 0.263
so we have 0.263 moles of zinc, and you need twice the amount of chlorine so therefore 0.526moles of chlorine= 0.526x 17=8.942g of chlorine
i cba to work the rest out but the most reasonable answer is 0.24 mol however if you need to use working outs, use the formula i provided earlier
I think that it's cannot include supernatural explanations, or C.
If i got it wrong sorry