Consider the following two substances and their vapor pressures at 298 k.
substance vapor pressure (mmhg)
a 275
b 459
based on this information, compare the characteristics of the two substances.
1. substance a or substance b:
a. has weaker intermolecular forces?
b. has a higher boiling point?
c. is a gas at 300mmhg?
d. has a higher heat of vaporization?

Based on the information, the comparison of characteristics of two substances is as follow:

Substance A:

Substance B:

Explanation:

Comparing the two substances, A and B

a) B has weaker in intermolecular forces.

b) A has a higher boiling point.

c) B is a gas at 300mmHg.

d) A has a higher heat of vaporization

The reason for this is because vapour pressure is the measure of the pressure exerted by a gas above a liquid in a closed container. Strong intermolecular forces produce a lower rate of evaporation and a lower vapor pressure. Weak intermolecular forces produce a higher rate of evaporation and a higher vapor pressure.

possibly, yes.

explanation:

the amount of sugar you take in is dangerously high, risk of heart disease, high risk of diabetes, and etc.

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.