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Chemistry 21 Online
OpenStudy (anonymous):

How many grams of glucose, C6H12O6, are required to lower the freezing point of 150g of water by 0.75 degrees celcius? What will be the boiling point of the solution?

OpenStudy (anonymous):

@shrutipande9

OpenStudy (anonymous):

@thomaster

OpenStudy (anonymous):

can you help me with this assignment :D

OpenStudy (shrutipande9):

Kf for water is 1.86 deg C/m

OpenStudy (anonymous):

what is the working formula?

OpenStudy (shrutipande9):

\[DeltaTf = Kf * m\] 0.75 = 1.86 * moles of solute/weight of solvent

OpenStudy (shrutipande9):

can u put the necessary values?

OpenStudy (anonymous):

|dw:1425208421108:dw|

OpenStudy (shrutipande9):

u are 1 step ahead of me..:D great..:) now can u find the value of W of solute

OpenStudy (shrutipande9):

r u there? @~Gelmhar

OpenStudy (anonymous):

11g

OpenStudy (anonymous):

now the boiling point :D

OpenStudy (shrutipande9):

10.8 to be precise...but yaay u got it...

OpenStudy (anonymous):

bec'z i compute 10.89 lol

OpenStudy (shrutipande9):

now elevation in boiling point is \[\Delta Tb = Kb * m\]

OpenStudy (anonymous):

0.512 = Kb?

OpenStudy (shrutipande9):

yep

OpenStudy (anonymous):

m= 0.41 m

OpenStudy (anonymous):

so i will just times, them?

OpenStudy (anonymous):

Tbsolvent = 100

OpenStudy (shrutipande9):

so m *o.512

OpenStudy (anonymous):

0.21 + 100 so i got 100.21 as the boiling point

OpenStudy (shrutipande9):

yep..:D

OpenStudy (anonymous):

we have exam tommorow .. im glad you guide me here LOL

OpenStudy (shrutipande9):

all d best for tomo..:D u will do good..:) if u think a user helps u..always appreciate them with a medal..:)

OpenStudy (anonymous):

can you help me with another problem :D

OpenStudy (shrutipande9):

sure

OpenStudy (anonymous):

I will grand your wish if you help me 1 more time :D

OpenStudy (shrutipande9):

just make a new ques..:)

OpenStudy (anonymous):

Is it ok, if i will just type the question here or make another?

OpenStudy (shrutipande9):

rules..:/ out of all i hv to follow

OpenStudy (shrutipande9):

make another is better

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