Recent content by skierboy

Homework Statement The bridge circuit for this problem: http://img52.imageshack.us/img52/7366/bridgecircuit.jpg I have to derive a formula for the equivalent resistance (Req) of the bridge circuit shown in the link.Homework Equations I've been able to come up with the 5 equations with 5...

The ether facilitates the reaction? So, essentially, the presence of ether allows for the formation of the Grignard reagent? Without ether, it wouldn't form...?

Homework Statement Regarding the preparation of benzoic acid via a Grignard reagent: *Initial bromobenzene solution includes bromobenzene, magnesium metal and anhydrous ether. Once the initial bromobenzene/Mg solution undergoes boiling, you forget to add additional anhydrous ether to the...

On the same note as NH4NO3, I found that HOCN can be expressed as two different ions as well: H+ and OCN-. Does that make it an ionic compound then? I'm confused because the individual atoms are covalently bonded...

Electron affinity (EA) is essentially the energy released when an electron is added to a gas-phase atom. EA increases as you move from left to right across the periodic table. And it decreases as you move down the table. The same increase/decrease relationship can be applied to ionization...

Homework Statement Which of the following compounds are properly classified as ionic? (select all that apply) HOCN SF4 NH4NO3 MgCl2 K2O Li2 NF3 Homework Equations n/a The Attempt at a Solution My initial choices were MgCl2 & K2O ... however, since this was incorrect (it...

Thanks for your help Mark44! I was on the right track but had a slight integration error that mixed up my +/- signs. Plus, I found out that the textbook answer was expressed with the absence of sqrt's in the denominator - conjugates!

Homework Statement Here's the question: int(1/(x(x^2+3)*sqrt(1-x^2)))dx Homework Equations According to the textbook, the answer should be: (1/3)*ln((1-sqrt(1-x^2))/x)+(1/12)*ln((2+sqrt(1-x^2))/(x^2+3))+C The Attempt at a Solution 1) let t = sqrt(1-x^2), so dt = (-x)/sqrt(1-x^2)...

Alrighty, thanks for the clarification!

Homework Statement I have to find the mass of HCl (in grams) that is produced given the below reaction yields 18.7g of H3PO4. Homework Equations PCl5 + 4H20 -> H3PO4 + 5HCl The Attempt at a Solution I calculated the # of mols for H3PO4. I want to confirm if this mol value...