Recent content by Greywolfe1982

Homework Statement Find the product of each reaction Homework Equations Butanal (http://www.chemspider.com/Chemical-Structure.256.html?rid=e530204e-5d67-41a8-88e9-fc8e0ffcf41b), reacted first with bromobenzene...

Sounds good, I'll go with that. Thanks for the help.

Thanks for the reply. Your post helped me find the rule that I think I can justify that k2-2 isn't an integer with. From a list of a rules and properties our class was given... Discrete Property of Integers - There is no integer between 0 and 1 I'm sure the marking of justifications varies...

Homework Statement Just as the title said, I need to prove: For any integer n, n2 - 2 is not divisible by 4 by the method of proof by contradiction. Homework Equations (Relevant by division into cases) Even numbers = 2k for some integer k Odd numbers = 2m+1 for some integer m...

Just looking for some links to sites with guidelines for a quick chemistry demonstration. No particular topic, just nothing overly simplistic. I'd like it to be "visually entertaining" though - it's being done as a presentation, and frankly I'm not sure that the most interesting...

Aww. You beat me to it. I was in the shower when I realized I used 10 as a side instead of 10/3. I haven't worked it out yet, but I'm assuming I won't have any problems from here. Thanks for the response.

Homework Statement How do you cut a 10m piece of wire to get the maximum area when forming a square and an equilateral triangle? Homework Equations asquare=s2 atriangle=s2*\sqrt{}3/4 The Attempt at a Solution (Note that I've already found the total area function, its derivative...

Finding inflection points of x(ln(x)) (or "Why is WolframAlpha telling me this?") The question is finding the points of inflection for f(x)=xlnx. As far as I know, it has none, and is concave up for the entire function within its domain, x>0. When I look at the graph on WolframAlpha though...

Homework Statement Two sides of a triangle of fixed length measure 12m and 15m. The angle between these two sides increases at a rate of 2 degrees per minute. When the angle between these two sides is 60 degrees, at what rate is the third side increasing? Homework Equations That's the...

Hmm...this made me change my thinking about the question a bit. I'll read the question directly as it's worded in the lab: Why is it not necessary to determine the limiting reactant in each of the steps in the series of reactions in order to calculate the final percent recovery? After I...

Mostly metathesis reactions (Cu(NO3)2+2NaOH --> 2NaNO3+Cu(OH)2), one that was adding heat (Cu(OH)2 --> CuO+H20). The latter I could see there being no need to calculate the limiting reactant of course, but with the first equation it seems like you could still use a minimal amount of NaOH and not...

Homework Statement I did a lab with a series of reactions involving copper, going from a copper nitrate solution to pure copper. One of the questions for the lab asks why it isn't necessary to determine the limiting reactant in each of the reactions to calculate final percent recovery...

Bleh, that was too simple. All you had to do was double it due to the mole ratio.

Homework Statement At a certain temperature, the reaction 2NO2(g) --> 2NO(g) + O2(g) progresses in a 4.00 liter vessel at a rate of 0.88 mol · L−1· s−1. What is \Delta[NO2] \Deltat under these conditions? Answer in units of mol · L−1· s−1. Homework Equations C = n/v ...

I'm thinking of two answers right now, but the one that makes the most sense to me is 1. - at all points along the line connecting the wires. The magnetic fields would be two vertical components of the same magnitude and opposite direction, canceling each other out.