[BAMxTiFFANY]

Dear BAMxTiFFANY;

What is the definition of % w/w?

Good Luck!
                    ARGOS⁺⁺

you mean percent by mass of sodium chloride
its the mass of sodium over the total mass times 100

[ARGOS++]

Dear BAMxTiFFANY;

Correct!, - So please calculate it!

Good Luck!
                    ARGOS⁺⁺

[BAMxTiFFANY]

soo its.. 2.25% :]

[ARGOS++]

Dear BAMxTiFFANY;

Sorry - NO!

If I remember correctly:

Now we know that 1.050 kg solution contains 73.05 g sodium chloride.

Good Luck!
                    ARGOS⁺⁺

[BAMxTiFFANY]

Dear BAMxTiFFANY;

Sorry - NO!

If I remember correctly:

Now we know that 1.050 kg solution contains 73.05 g sodium chloride.

Good Luck!
                    ARGOS⁺⁺

um you just confused me O_O
is it .696?

[ARGOS++]

Dear BAMxTiFFANY;

Closer!   (But still far by factor 10.)

But if I remember correctly:

!!!!!! Please calculate all times with units  !!!!!!!

Please re-calculate it!

I think you confuse yourself most!!
Good Luck!
                    ARGOS⁺⁺

[BAMxTiFFANY]

Dear BAMxTiFFANY;

Closer!   (But still far by factor 10.)

But if I remember correctly:

!!!!!! Please calculate all times with units  !!!!!!!

Please re-calculate it!

I think you confuse yourself most!!
Good Luck!
                    ARGOS⁺⁺

uh

its ..73.05 over 1050
then times 100.. soo 6.96%

[ARGOS++]

Dear BAMxTiFFANY;

Exact!

Now we have finished your Question 2.).   Study it very! very carefully once again!!

Please try the other questions by yourself and tell where you run in troubles.
Hint for question 3.):
    What is the definition of molality telling you about the solvent (water)?

Good Luck!
                    ARGOS⁺⁺

[BAMxTiFFANY]

Dear BAMxTiFFANY;

Exact!

Now we have finished your Question 2.).   Study it very! very carefully once again!!

Please try the other questions by yourself and tell where you run in troubles.
Hint for question 3.):
    What is the definition of molality telling you about the solvent (water)?

Good Luck!
                    ARGOS⁺⁺

thanks! x]
i already did the molality for #3 i just cant get  mole fraction for water..