2SO2(g) + O2(g) → 2SO3(g) ΔH°= –196 kJ
2S(s) + 3O2(g) → 2SO3(g) ΔH°= –790 kJ
2SO2 + O2 → 2SO3(g) ΔH°= -196 kJ.
2S + 3O2 → 2SO3(g) ΔH°= - 790 kJ.

Given the data above, what is ΔH°delta for the below mention reaction?

S(s) + O2(g) → SO2(g)

Determine the percent sulfuric acid by mass of a 1.61 m aqueous solution of h2so4. %

How many mmols of tris-hcl are there in 100 ml of a 100 mm tris-hcl buffer solution at ph 8.1? note that the 100 mm refers to the sum of tris and tris-hcl concentrations?

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.