Question

P4O6(s) + 2O2(g) P4O10(s)

round to the nearest whole number
(help please its stressing me out to the max)

Answer 1

If you're just looking to balance you equation then it's already balanced. I don't know what our mean by "round to he nearest while number" there will always be a whole number of atoms

Answer 2

Consider the chemical equations shown here.

P4(s) + 3O2(g) → P4O6(s) ΔH1 = -1,640.1 kJ

P4O10(s) → P4(s) + 5O2(g) ΔH2 = 2,940.1 kJ

What is the overall enthalpy of reaction for the equation shown below?

Round the answer to the nearest whole number.

P4O6(s) + 2O2(g) Right arrow. P4O10(s)

Answer: -1300