What Is the Molarity of 70% TBHP Solution?

[amorale]

Homework Statement

What is the Molarity of 70% TBHP?

Homework Equations

Given: d=.937g/ml, FW=90.12g , w/w%?

The Attempt at a Solution

1000mL x (0.937g/mL) x (1mol/90.12g) = 10.4M

That is what I got but idk what to do with the 70% or that w/w%
or is that right the way I did it?

 

[HallsofIvy]

"Molarity of 70%" means .7 times one molarity. Do you know what a one molarity solution would be?

 

[amorale]

So this is what I came up with now:

1000mL x (0.937g/mL) x (.7) x (1mol/90.12g) = 7.28mol/L

Is this correct now?

 

[AGNuke]

If they are asking the molarity and they have given you density, then it is definitely w/w%

 

[Borek]

"Molarity of 70%" means .7 times one molarity.

No, in this context it means molarity of 70% solution of TBHP, 70% being most likely w/w.