swtnblk

This page lists questions and answers that were posted by visitors named swtnblk.

Questions

The following questions were asked by visitors named swtnblk.

What is the boiling point of an aqueous solution that freezes at -6.7 degress C. Please help.

What is the boiling point of an aqueous solution that freezes at -6.7 degress C. Please help. I feel retarded because it seems like its something real easy but Im still not getting it. I did 100 + 6.7 and got 100.67 and are you sayin to divide 1.86 by .52...

pleast help me work this prob lead is a toxic meatal that affects the central nervous system. a Pb-contaminated water sample contains 0.0011% Pb by mass. What vilume of the water in milliliters contains 115g of Pb? (assume that the density of the solution...

what is the boiling point of an aqueous solution that freezes at -67 degrees C? I was given this answer What is 100+6.7 (1.86/.52) ? so 100+6.7 = 106.7 1.86/.52 = 3.58 is the .52 the Kb I got the answer in the book I just don't understand how they got to...

to what volume should you dilute 125mL of an 8.00M CuCl2 solution so that 50.0mL of the diluted solution contains 5.9g KNO3 I have a hard time determing the M1V1=M2V2 is

what is the molarity of an aqueous solution that is 6.75% glucose by mass? Assume a density of 1.03 g/ml

Consider the reaction Mg +2HCl ------>MgCl2 + H2 What is the minimum amount of 1.85M HCl is necessary to produce 28.5L of H2 at STP Please help me work this problem

Answers

The following answers were posted by visitors named swtnblk.

im lost where did you get the 52 from

what is the boiling point of an aqueous solution that freezes at -67 degrees C? I was given this answer What is 100+6.7 (1.86/.52) ? so 100+6.7 = 106.7 1.86/.52 = 3.58 is the .52 the Kb I got the answer in the book I just don't understand how they got to...

Thanks I under stank Kf but in my book it says that Kf is 0.512

not sure where to start. do i use the freezing point depression equation

i think I need help setting this up. Not looking for the answer just want to understand it. Than you

I thank you very much, I believe I really need to see it step by step to understand it. Another thing what did the 100+6.7 have to do with the equation. Also changing the -6.7C to 6.7C is this something that you would do to any boiling or freezing problem