Question

HELP PLEASE. Multiple choice!!

Answer 1

plug into the formula for change in BP\[\Delta T_B = m*K_f\]

Answer 2

I dont understand that?

Answer 3

you have an "m", and you have a "Kb" value given. multiply and solve

Answer 4

so its 0.75 times 0.52?

Answer 5

yes, but that's the CHANGE in the BP, not the new BP itself. the boiling point of a solution is always HIGHER than the pure solvent.

since the solvent is water, the pure solvent boils at 100C

Answer 6

so its 100.39?

Answer 7

that's what i get

Answer 8

also am I right in these two below? @JFraser

Answer 9

second one's right, first one is wrong

Answer 10

help me with the first one?

Answer 11

its be !

Answer 12

what about this one?

Answer 13

@chmvijay could you hep me with the one above please?

Answer 14

A

Answer 15

just look up each type of definition and see which is the narrowest definition