How will the vapor pressure of an aqueous solution of sodium chloride compare to that of pure water?

a.)the solution's vapor pressure will be higher.
b.)the solution's vapor pressure will be lower.
c.)the solution's vapor pressure will be the same.
d.)the solution's vapor pressure will be twice as great.
e.)there is not enough information given to answer the question.

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6

1. they vary with a higher number because boiling is way hotter than melting

b) nuclear ive learned that in a pedtrodic table

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.