ASAP PLEASE !! What are some factors that causes the actual reaction enthalpy to vary from the accepted reaction enthalpy?

Well, Here's some factors:

The concentrations of the reactants and the products.

The temperature of the system.  

And, The partial pressures of the gases involved.

Good Luck!~

odds are decent that your handwriting right now looks a little bit different than it did five years ago, and will look different again in five more. when i look back through my notebooks from middle school to now, i see a long, slow progression from meticulous and teeny letters to bigger, sloppier ones, plus a few side detours: sometime in high school, for example, i decided those loopy cursive lowercase f’s were just the coolest, adopting them as the lone rep for cursive in my otherwise all-print handwriting.

explanation:

50.23 i believe is correct but don't quote me on that.