Because of General Chemistry.
More specifically, the homework for the course.
I already have a hard time with chem as it is, but this homework system has brought me to new levels of hate. It's all done electronically, with a website posting problems that are taken (supposedly) from our textbook. It penalizes you for spelling errors ("INCORRECT, IT'S 'FLUORINE' NOT 'FLOURINE'! KISS MY ASS, AHAHAHAHA!") and is ambiguous about what units of measurement it wants in your answers.
But the thing that sent me over the edge just now is bond enthalpies. A problem asks to calculate the change in enthalpy of H2 + Cl2 --> 2 HCl. I look at the chart of enthalpies in the book and see that HCl = 431 kJ, so I calculate accordingly. It marks my answer incorrect because the website says the enthalpy of HCl is 432!
More specifically, the homework for the course.
I already have a hard time with chem as it is, but this homework system has brought me to new levels of hate. It's all done electronically, with a website posting problems that are taken (supposedly) from our textbook. It penalizes you for spelling errors ("INCORRECT, IT'S 'FLUORINE' NOT 'FLOURINE'! KISS MY ASS, AHAHAHAHA!") and is ambiguous about what units of measurement it wants in your answers.
But the thing that sent me over the edge just now is bond enthalpies. A problem asks to calculate the change in enthalpy of H2 + Cl2 --> 2 HCl. I look at the chart of enthalpies in the book and see that HCl = 431 kJ, so I calculate accordingly. It marks my answer incorrect because the website says the enthalpy of HCl is 432!
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