In the world’s coldest freezer, sodium gas was cooled to a temperature of 78. 5°c below zero and then cooled 194. 65°c more. What was the new temperature of the sodium gas? –273. 15°c –272. 7°c –202. 5°c –116. 15°c.

It depends on the subject for me. some exams are easier than others so i usually go through it and answer questions i know based on my general knowledge, then double check after. going through the lesson can a lot  because the exams can be  very lesson-specific, but sometimes they are ridiculously long so a lot of people don't take the time. i did find that, when i went through the lessons, i was making 100's on my exams vs strictly using + the internet and  i make 90's. 

C. junior college i hope this .

Iwould tell u but its against rules

One of the angles would be 70 degrees and the other one would be 90 degrees