dry ice sublimes at −78.5 oc at a pressure of 1 atm. at room temperature and 1 atm pressure, what is happening to the dry ice molecules on a molecular level as sublimation occurs?

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. 

Having the act with writing can make an additional scores based on the analytic rubric scoring. the writing test usually are 2 weeks after multiple choice yet the answer on this scenario would be c. before the main act score results then have been release.

The correct answer is b, social stratification is needed for a society to exist. marxist theory regarding social stratification is that due to the differing economic capacities among people in society, a natural separation occurs between those that own the means of production and those that sell their labour in the production chain. 

The answer is number 4.