decimal percent Al= (2*27)/(2*27+3*32+12*16 + x*18)
so the decimal percent was given to be .0810, solve for x.
The aluminum sulfate hydrate [Al2(SO4)3
.
xH2O] contains8.10 percent Al by mass. Calculate x, that
is, the number of water molecules associated with each Al2(SO4)3 unit.
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