Recent content by Winning

Homework Statement What volume of solution is needed to dissolve 1.0 mol of a strong base such as KOH to make a solution whose pH is 12.5? Homework Equations KOH_{(s)} \rightarrow K^{+}_{(aq)} + OH^{-}_{(aq)} pH = -log[H_{3}O^{+}] The Attempt at a Solution I'm not going to...

Are you familiar with LaGrange multipliers? If so, then this problem is easier than it seems.

Homework Statement What is the solubility product for copper(I) sulfide, Cu2S, given that the solubility of Cu2S is 8.5 × 10-17 M? Homework Equations Cu_{2}S \leftrightarrow 2Cu^{+} + S^{2-} The Attempt at a Solution Set up the equilibrium constant expression: K_{sp} =...

@Ray Vickson: That's a good question... I had a brainfart lol. @jbunniii: Yeah, y is dependent on x... I forgot to mention that this is part of an Imp. Diff. problem. Thanks!

Homework Statement \frac{d}{dx}x^{2}y^{2} = ? Homework Equations Power rule: \frac{d}{dx}x^{n} = nx^{n-1} Product rule: \frac{d}{dx}[f(x)g(x)] = f'(x)g(x) + g'(x)f(x) The Attempt at a Solution My TI-89 titanium gives me 2xy^{2} Which contradicts the power rule. Doing this by...