Which of the following will have the highest vapor pressure?

A) Except for a substituted Hydrogen, they are basically the same molecule but as you can easily deduce, Hydrogen with an Atomic Weight of 1 vs Chlorine with a weight of 35 is all the difference and by that you can deduce Methane CH4 is lighter and would have a higher Vapor Pressure. 
b) Propanol vs Methanol (CH3OH). This is pretty simple 3 Carbons 6 Hydrogens and 1 Oxygen = 58 atomic weight. Methanol has 1-Carbon and 3 Hydrogen and 1 Oxygen atom = 31 atomic weight vs. So Methanol with the lower atomic weight should have the higher vapor pressure. 
c) 31 vs. 30 atomic weight. are fairly close, Formaldehyde H2CO has a Vapor pressure of 23-26mm Hg @ 25 C vs. 126.57 mm Hg for Methanol. I believe in this case is that there are stronger intramolecular forces with formaldehyde vs. methanol thus a lower vapor pressure. 

Since there is the same amount of agn03 in both silver chloride and silver nitrate they produce the same amount of moles. therefore silver chloride produces the same amount of silver nitrate, so your answer is 15.0 moles of silver nitrate. i hope this !

Read the sentences below in 1962, i tried to enroll as the first black student at the university of mississippi. the governor of mississippi blocked my entrance which best describes the verbs used in the sentences? o they are past tense verbs, which are often used in narrative essays o they are past tense verbs, which are not often used in narrative essays. o they are future tense verbs, which are often used in narrative essays o they are future tense verbs, which are not often used in narrative essays.