Recent content by n.a.s.h

Homework Statement Draw the structure of aspartic acid at PH 4. I calculated the PI and based on that, drew the charged structure. If anyone can confirm that this is the correct structure. Homework Equations The Attempt at a Solution I attached the structure. Thanks for any assistance.

Can anyone please walk me through the mechanism as this question does not make sense to me. I do have some understanding of the general mechanism. The answer is B) but I don't understand how to get there. The confusing aspect to me, is the structure of the ylide.

Homework Statement How would these substances be grouped into families of molecules? 1. Urea 2. Thiourea 3. ethanol 4. ethylene glycol 5. glycerol 6. dextrose 7. saccharose 8. Bi-Distilled Water 9. Triton X-100 ( a detergent) Homework Equations n/a The Attempt at a...

Homework Statement i have to decide if this compound has any enantiomers or not ch3ch2ch(ch2ch3)ch3 I think it does not because its mirror image is the same compound and that it does not have any chiral centers...am i right? Homework Equations The Attempt at a Solution

Homework Statement Draw 3-methyl-2-butanol in its lowest energy conformation Homework Equations N/A The Attempt at a Solution ok i know its the staggered conformation and I have the skeletal drawing down but i just do not know where to put the groups...

yes i think its the general equation...

Homework Statement solve the following... dy/dt= 0.5(100-y) with initial condition:y(0)=20 Homework Equations The Attempt at a Solution i found the general equation to be I=0.5Ln |100-y|+c but I am stuck as to what to do with the initial condition...

Homework Statement I had to solve the integral...After all my work i got -infinity 3 integral sign 1/ [(t-3)^4/3] 1 Homework Equations The Attempt at a Solution -infinity...is this correct? and would this be divergent?

Homework Statement solve the diferential equation: dy/dx = xe^-x Homework Equations The Attempt at a Solution dy/dx = xe^-x dy = xe^-x dx ∫dy = ∫(xe^-x) dx u = x and v ' = e^-x That is all i really know to do I'm really confused and any help is appreciated.

Homework Statement what is the derivative of e^[(-X^2-2x+1)/2] Homework Equations The Attempt at a Solution Is this right? = -(x+1)e^[(-x²-2x+1)]

Homework Statement A solution is 1.5×10−2 M in both CrO4^2-and SO4^2-. To this solution, 0.55 M Pb (NO3)2(aq) is slowly added. Which anion will precipitate first from solution? a) CrO4^{2-} b) SO4^{2-} What is Pb^{2+} concentration at the point at which the second anion begins to...

yeah sorry i meant product rule

Homework Statement Find the derivative: F(x)= cos (x)* sin(5x^2 +7) Homework Equations The Attempt at a Solution I used the power rule and the chain rule and wound up with this: but i don't know how to simplify it... = -sin(x)*sin(5x^2+7)+(10x)*(cos x)*(cos (5x^2+7)

Homework Statement The metabolism of glucose, C6H12O6, yields Co2(g) and H2O(l) as products. Heat released in the process is converted to useful work with about 70% efficiency. Calculate the mass of glucose metabolized by a 59.0-kg person in climbing a mountain with an elevation gain of...

Homework Statement find the derivative and critical points of the function f(x)= x^3-x^2+5 Homework Equations The Attempt at a Solution I tried to find the derivative: 3x^2-2x but I am not sure how to find the critical points from here...