Friday

February 24, 2017
Total # Posts: 39

**Chemistry**

I know that I'm suppose to use the formula Ecell = 0.0592V/n*logK and solve for K, but before I do that, I have to find the oxidation and reduction from the chemical equation that was given for me. But I just do not know how to approach it. And i'm pretty stuck.

*July 12, 2011*

**Chemistry**

Please help me solve this problem: What is the value of the equilibrium constant (K) for the reaction below 25^o C? 3I2(s) + 2Fe(s) --> 2Fe^3+(aq) + 6I^-

*July 12, 2011*

**AP Physic**

Hi there I am having so much problems trying to solve this physic problem and I really need help. Please give me a big hint on how to find the amplitude of this problem because i tried using everything i know and i cannot figure it out. This homework problem deals with wave ...

*January 17, 2010*

**AP Physic**

Hi there I am having a lot of trouble trying to figure out this homework problem and I really need help. This problem is dealing with wave motion and I do not know how to set up the formula to get the correct answer. Please help me and show some steps how to approach this ...

*January 16, 2010*

**Calculus**

Hi there I am having some troubles trying to do my calculus homework and I really need help trying to do this problem from my homework: Set up the problem and do not solve: The mass of the solid bounded by the surfaces 2x^2 + 2y^2= 9, z=0, z=3 with density function p(x,y)= x^...

*December 3, 2009*

**Calculus**

Hi there i am having some problems trying to do my calculus homework and i really need help on how to show the step to proof the volume of a sphere which is V= 4/3pirsquare. But I have to use triple integral to proof the volume of a sphere. Please help me and give me some good...

*November 25, 2009*

**Calulus**

Hi there I need help with one of the problem from my homework package. This week for my calculus class, we were learning how to do partial derivative and finding the tangent of the plane. So I do not know how to approach this problem. Please help me by how to derive this ...

*October 25, 2009*

**Calulus**

Hi there I need help on my calculus homework and this week, we were working on partial derivative. I don't know how to approach this word problem and set it into a maximum or minimum. Well I am not too sure if this problem is a minimum or maximum problem. Please help me ...

*October 25, 2009*

**Math subject Calculus**

Hi there I am having some difficulties to solve this problem from my homework package and i don't understand how to approach this problem. Please help me by giving me advice on how to approach this problem. Let z = xsin(x/y), y does not equal zero. Show that the tangent ...

*October 24, 2009*

**college-- chemistry**

This problem really bugs me and I did figure out the diagram but I cannot figure out the wavelength. Please help me with this problem. The transitions of i) n=2 to n=4 ii) n=3 to n=1 iii)n=5 to n=2 iv) n=3 to n=4 which corresponds to emission of radiation with the longest ...

*February 16, 2009*

**college-- chemistry**

I got stuck on this problem and I cannot figure out what to do or explain this problem. Please help me with this problem. The emission lines of one-electron atoms and ions can all be fit to the equation describing the spectrum of the hydrogen atom: E= -(2.18X10^-18J)Z^2(1/n^...

*February 16, 2009*

**college-- chemistry**

I am having a problem with this problem from my homework. I need some help on this problem. Microwave ovens work by irradiating food with microwave radiation, which is absorbed and converted into heat. Assume radiation with wavelength=15.0cm is used and that all the energy is ...

*February 15, 2009*

**college: Chemistry**

Hi can someone help me with this other problem from my homework, The thermochemical equation is C6H12O6(s)+ 6O2(g)--> 6CO2(g)+ 6H2O(g) reaction is -2539.01 kJ/mol Part B) What is the minimum number of photons with wavelength of 645nm needed to prepare 135 grams of glucose? ...

*February 10, 2009*

**college: Chemistry**

Hi there I need help with my chemistry homework There are two parts to the first question and i did the first part and i got E= -6.54E-18J. Part A) Calculate the energy (in J) of the photon associated with the transition of electron in He from n=2 to n=1. Part B) As the Value ...

*February 10, 2009*

**Chemistry**

For my homework, there are two parts to the question. i did part a and I got E= -6.54E-18J. Part A) Calculate the energy (in J) of the photon associated with the transition of the electron in He from n=2 to n=1. Part B) As the Vaule of Z increases, does the wavelength of the ...

*February 10, 2009*

**Chemistry**

Please help me with this question from my homework package What is the minimum number of photons with wavelength 645nm needed to prepare 135 grams of glucose? When the thermochemical equation is C6H12O6(s)+ 6O2(g)--> 6CO2(g)+ 6H2O(g) Reaction is -2539.01 Kj/mol

*February 10, 2009*

**Chemistry A.P.**

Hi there, I need some help with my homework problem for chemistry, What is the balanced thermochemical equation for glucose (C6H12O6) and O2 gas form CO2 gas and liquid water?

*February 9, 2009*

**AP CHEM**

Please help me with thses AP CHEM homework problems and show the steps to how to find the solutions: Solid Liquid Titrations: Determine the concentration of the indicated liquid unknown given the mass of a solid standard and the buret data for the titration. #35) What is the ...

*July 31, 2008*

**AP CHEM**

Please help me with these AP CHEM homework problems problems and show me the steps: Mass per Volume Results for Titrations: Determine the mass per volume results requested in the following problems. #23) A particular water supply is found to contain 0.000160 MAs, what is the ...

*July 31, 2008*

**AP CHEM**

Please help me with these AP Chemistry homework problems and show me the steps how to find the solutions: Liquid-Liquid Tirations: What is the concentration of the unkown solution for each of the following titrations? #5) 25.36 mL of 0.178 M NaOH is required to titrate an 25....

*July 31, 2008*

**chem 3A**

please help me with these homework problems from chemistry because the teacher did not give enough information to some of these chemistry work problems. 1) 50.0 g of aluminum is reacted with excess sulfuric acid. The chemical equation for the reaction is: 2Al + 3H2SO4 --> ...

*July 25, 2008*

**Chem 3A**

please help me with this chemistry problem. 1) Write out a balanced chemical reaction equation for the reaction of magnesium with hydrochloric acid, and then What is the Theoretical Yield after balancing the chemical equation?

*July 25, 2008*

**Chem -3A**

Please help me with this problem Avogadro's Law A chemical reaction occuring in a cylinder equipped with a movable piston produces 0.58 mol of gaseous product. If the cylinder contained 0.11 mol of gas before the reaction and had an initial volume of 2.11L, what was its ...

*July 23, 2008*

**Chem 3A**

please help me with this chemistry problem. Half-Life A radium-226 sample initially contains 0.112 mol. How much radium-226 is left in the sample after 6400 years? The half-life of radium-226 is 1600 years.

*July 5, 2008*

**chemistry**

hi, can someone please help me with my homework problem? what is the rounding number for 121.07 cm? what is the rounding number for 22130 km? what are the significant figure and uncertainty number for 120cm, 25, 430 km, 3, 500km, 200 km, and 1001 tons.

*June 25, 2008*

**chemistry**

hey i need help on finding a good oxidation chart for chemistry.

*April 3, 2008*

**please help me with my engineering homework**

what are the advantages of having an optical biopsy?

*December 4, 2007*

**please help me with my engineer project**

I am working on an Engineer project about Digital clock I research my project on the Digital Clock, but i could not find any webcite that has the answer to these questions 1. What your part is and how it works? 2. Companies that make this kind of equipment/material/device/...

*November 28, 2007*

**college essay: please revise and edit**

A Silly Phobia Toward A Gorgeous Dude From Cal Poly It was a cold Thursday night in the coastal area. The Sunnyside High School AVID students were on their way back home from the field trip of visiting UCSB. We stopped in San Luis Obispo and had dinner at the IN-N-OUT burger...

*November 20, 2007*

**please help edit and revise my essay**

An Abusive Situation On a ordinary Thursday afternoon I just finished eating my lunch with my high school friends. We did not do anything much except talk about how our classes were and about those stupid guys at the East Hall upstairs. I was having so much fun that I was ...

*November 20, 2007*

**please edit and revise my essay**

A Bird Is Judged On Its Looks On a warm sunny day, everything stood quiet in the Finches's yard. A mockingbird stood on top of an old tree with rotten branches. As it got ready to sing, a shiny silver bullet flew and struck the mockingbird. "We got the bird that ...

*November 19, 2007*

**please help revise and edit my essay**

A Bird Is Judged On Its Looks On a warm sunny day, everything stood quiet in the Finch's yard. A mockingbird stood on top of an old tree with rotten branches. As it got ready to sing, a shiny silver bullet flew struck the mockingbird. "We got the sonnava (expletive) ...

*November 18, 2007*

**please revise and edit my essay**

A Bird Is Judged On Its Looks On a warm sunny day, everything stood quiet in the Finch’s yard. A mockingbird stood on top of an old tree with rotten branches. As it got ready to sing, (BOOM) a loud thunder sound rose high in the sky. A shiny silver bullet flew struck the ...

*November 18, 2007*

**Please help revise and edit my essay**

A Bird Is Judged On Its Looks On a bright warm sunny day everything stood quiet in the Finch's yard. A mockingbird stood on top of an old tree with rotten brown branches. As it got ready to sing, "boom" a loud thunder sound rose very high in the sky. A shiny ...

*November 16, 2007*

**please help edit my outline for public speaking**

Badminton Specific Purpose: To inform my audience about the laws of the game, equipment, and badminton strokes.

*November 7, 2007*

**please revise my essay**

Dreams Are Taken Away It was a tough day on September 30, 2002 with a crowd of high school students carrying posters and signs marching in the middle of the street. None of them were happy at all. "Governor Davis is throwing away our future with his unfair High School ...

*November 4, 2007*

**Please revise my essay**

Dreams Are Taken Away It was a tough day on September 30, 2002 with a crowd of high school students carrying posters and signs marching in the middle of the street. None of them were happy at all. "Governor Davis id throwing awat our future with his unfair High School ...

*November 4, 2007*

**please revise my essay**

Dreams Are Taken Away It was a tough day on September 30, 2002 with a crowd of high school students carrying posters and signs marching in the middle of the street. None of them were happy at all. "Governor Davis is throwing away our future with his unfair High School ...

*November 3, 2007*

**please revise my essay**

Dreams Are Taken Away It was a tough day on September 30, 2002 with a crowd of high school students carrying posters and signs marching in the middle of the street. None of them were happy at all. “Governor Davis is throwing away our future with his unfair High School ...

*November 3, 2007*

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