Question

finding for molality..

Answer 1

molality = number of moles of solute / weight of the solvent

Answer 2

a solution of NaOH contains 19.2 g. of solute in \[160cm ^{3}\] of solution. what is the molality of the solution.

Answer 3

I gave you the formula...calculate it...Take care of the units..the answer may be in molal

Answer 4

how does \[cm ^{3}\] convert to liter?

Answer 5

Sorry I was on an other ques...
\[1cm ^{3}=10^{-6}m ^{3} and 1m ^{3}=10^{3}l\]

Answer 6

got it boss?

Answer 7

1CM^3 = 10^-3 L

Answer 8

what does cm means?

Answer 9

Can u techeck ur question..i feel some thing is missing

Answer 10

cm is centi-meter

Answer 11

a solution of NaOH contains 19.2 g. of solute in
160cm3
of solution. what is the molality of the solution.

Answer 12

i think the volume of the solution is wrong and its solvent

Answer 13

solute + solvent = solution

solvent = solution - solute

Answer 14

U have answer key with u

Answer 15

from where do you get the volume of solute..density of NaOH is not given..Okay go on with the volume of solution itself..I think volume of solute is quite negligible

Answer 16

We need Density to solve this

Answer 17

@Vincent-Lyon.Fr

Answer 18

No..in such problems, usually the solvent is water. So, density is 1

Answer 19

a solution of NaOH

given:
solute: 19.2 g.
solution is 160cm3

missing: the molality of solution

Answer 20

change the units of volume to litre and substitute in the formula i had given above

Answer 21

Gram Molecular Weight of NaOH = 40

Answer 22

D = M/V

1 st find density

Answer 23

What density is required here? @Yahoo!

Answer 24

D = 19.2/0.16 = 120

Answer 25

opk.. i'll try to solve :D

Answer 26

Take the solvent to be water and volume of solute to be negligible

Answer 27

Do..u have the answer key @BieberJustin

Answer 28

For what did you find the density? the mass you substituted was of NaOH and the volume is of solution, which I say is aqueous solution of NaOH

Answer 29

@BieberJustin Do as I said. If the answer you get does not match with the right answer, I'll quit form Open Study

Answer 30

*from

Answer 31

wait.. just wait.. its not easy for me bro so chill.. :D

Answer 32

@AbhimanyuPudi

Answer 33

yep...

Answer 34

is 3 ur answer @AbhimanyuPudi

Answer 35

Yes

Answer 36

i searched.. the converter said that 160cm3 is 0.16 l ... is this right??

Answer 37

Yes

Answer 38

you sure its molality ? should be molarity !! ?? !!

Answer 39

if it is Molarity then the answer is 3M

Answer 40

YAH.. SORY ONLY HUMAN.. I HAVE MISTAKE TOO BUT THANKS FOR SAYING THAT :D

Answer 41

\[m=\frac{ M }{ d-MM1 }\]

Answer 42

Molarity and molality turns out to be equal for water if volume of solute is negligible

Answer 43

So it's molarity?

Answer 44

so....the question is molarity...)

Answer 45

yup!

Answer 46

oh.......then M = no of moles of solute / 1 L of solution

Answer 47

so u will get 3M

Answer 48

its either no of moles of solute in 1L of solution or no of moles of solute / volume of solution...

Answer 49

my answer is 3
molarity=3
is this right?

Answer 50

Yes its right

Answer 51

Yup 3M