SOMEONE, PLEASE HELP. Find ΔHrxn

2PbS(s)+3O2(g)→2PbO(s)+2SO2(g)

Use the following reactions with known ΔH Values:

One or more substances changing into one or more substances is an example of a

Which of the following is true for the actual yield of a reaction? it is always calculated as a ratio. it is the yield from the excess reactant. it is the yield from the limiting reactant. it is always less than the theoretical yield.

0.09 moles of sodium sulfate in 12 ml of solution