For a chemical reaction,
2A ₂ (g) + 5B ₂ (g) -------> 2A ₂ B5 (g)

at temperature = 27°C that is... 300Kelvin
The difference between deltaH and deltaE is X.
We have to find the ratio X/R.
I'm a bit confused to place which value of R here.
Please try to answer it before 1:00pm today.

According to thermodynamicsH - E = RTnH - ER = TnXR = TnHere R is a gas constant = 8.314 J K-1 mol-1T = 273 + 27 = 300 Kn = nP - nR = 2 -7 =  -5so, XR = -5 × 300 = -1500X = -1500 × 8.314 = - 12471 J

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