The Bob

I am having a bit of trouble on my test review for the following problems:

Evaluate the double integral

1) f(x; y) = 2x^2y; R : 0 < x < 1; x < y < 1 (all < have equals under them)

2)f(x; y) = y/(x^2+y^2) R : 1 < x2 + y2 < 9; x > 0; y >0 (all < and > have equals under them)

3)f(x; y) = xy^4; R : x2 + y2 <4; x >0 (all < and > have equals under them)

help is greatly appreciated

an= sqrt(3n/n+5)

bn= (ln(n+3))/(4throot(n)))

Need help on some homework knowing if each sequence converges and diverges, and what the possible value is if it converges.

A ball starts from rest and rolls down a hill with uniform acceleration, traveling 100 during the second 5.7 of its motion.

I have tried countless times to find the acceleration (that remains constant) but I get the wrong answer every time

I can get the server list but when I actually select a game and start to load it the bar will freeze, then the entire game will freeze and I cannot connect. Help?

i figured out the 3 combustion reactions:

C4H10+13/2O2-->4CO2+5H2O

C4H8+13/2O2-->4CO2+4H2O

C4H6+13/2O2-->4CO2+3H2O

I need to know by using reasoning which hydrocarbon would have the largest released energy and why? (No calculations please)

CH3CH2CH2CH3

CH2=CH2CH2CH2CH3

CH(triple bond)CH2CH2CH3

Do any of the about have geometric isomers and why?

I have been asking all day and really need help

Last problem that i need help on:

Determine the concentration of OH- (aq) in solution once 5 grams of solid Ba(OH)2 dissolves in H2O and attains equilibrium with it's component ions, then calculate the pH of the solution calculated above.

Ba(OH)2 (s) <----> Ba^2+^ (aq) + 2OH^-^ (aq)

Delta H= 7820 kJ (not need for this part)

Ksp of 5 x 10^-3^ (sparingly soluble)

Last problem that i need help on:

Determine the concentration of OH- (aq) in solution once 5 grams of solid Ba(OH)2 dissolves in H2O and attains equilibrium with it's component ions, then calculate the pH of the solution calculated above.

Ba(OH)2 (s) <----> Ba^2+^ (aq) + 2OH^-^ (aq)

Delta H= 7820 kJ (not need for this part)

Ksp of 5 x 10^-3^ (sparingly soluble)

CH3CH2OH (l) + 1/2 O2 (g) ----> CH3COOH (aq) +H2O (l)

I can't figure out where to even start

"Breathalyzers stop working when the concentration of acetic acid becomes too high (0.15 M). What is the pH of a .15 M solution of scetic acid (Ka=1.8 x 10 ^-5^)

CH3CH2OH (l) + 1/2 O2 (g) ----> CH3COOH (aq) +H2O (l)

I can't figure out how to create an ICE table to solve for the concentration:

"Breathalyzers stop working when the concentration of acetic acid becomes too high (0.15 M). What is the pH of a .15 M solution of scetic acid (Ka=1.8 x 10 ^-5^)

Using the equation:

Ba(OH)2(s) --> Ba2+(aq) + 2OH-(aq)

<--

Delta H = 7820kJ

-How would the solubility of solid Ba(OH)2 in water be affected by an increase in pH? How about a decrease in pH? Need to use Le Chatelier's principal in reasoning

CH_3_OH (g) +H_2_ ------> CH_4_(g)+ H_2_O (g)

Delta H = -115.4 kJ

Delta G = -117.3 kJ

True/False

Delta E and Delta H for the reaction are approximately equal?

C(s, graphite) +H2O (g) ---> CO (g) +H2 (G)

Enthalpy:110.53 kJ

Entropy:133.793 JK-1

Is it limited by temperature? (yes), why? And what is the temperature at which the reaction become product favored and is it product favored above or below this temperature?

I need help with two questions:

1) What would the structure of acrylic acid look like if it was reduced with an excess of LiAlH_4_

2)What is the structure of acrylic acid's repeat unit for an addition polymerization?

I had a calculation where they both were positive, so is this reaction reactant or product favored at 25 degrees C?

I had a calculation where they both were positive, so is this reaction reactant or product favored at 25 degrees C?

I downloaded the new ITunes a few weeks ago and now whenever I play music on a random song ITunes will freeze up. It will always continue the song until it is done, but then play nothing and Itunes will not respond. I can open any other program except if it requires to minimize Itunes....HELP!

Help me answer this question (we are allowed to use online sources): Recall that a positive number p is prime if its only divisors are p and 1. Notice that the number 1 satisfies this definition, and yet is not itself considered prime. Why is this?

If c<0 then ac > (and equal) bc. Explain this phenomenon

Help me with these two Function questions because I do not understand them :

1) Why is a(times)0=0 for all integers a?

2)Show that the square root of 3 is irrational