# Posts by Kevin

Total # Posts: 1,240

**Chemistry**

So would it be rate = (10^-7)*(10^-7)*(1.4X10^11)

*May 19, 2009*

**Chemistry**

A reaction is said to be diffusion controlled when it occurs as fast as the reactants diffuse through the solution. The following is an example of a diffusion controlled reaction. The rate constant for this reaction is 1.4x1011 M-1s-1 at 25oC and the reaction obeys the ...

*May 19, 2009*

**calculus**

integrate log base 10 x / x dx i don't understand this

*March 19, 2009*

**CALCULUS HELP!!!**

integrate 1/(x^2sqrt(1+x^2)) i know you have to use trig sub but iono how to cancel out some terms...much help is appreciated

*March 19, 2009*

**3rd grade**

kevin has $11.00 he gave terrell ave $3.00 and devin $2.00 about what fraction of his money does he have left about 1/4 about 1/3 about 1/2 about 2/3

*March 4, 2009*

**3rd grade**

kevin has $11.00 he gave terrell ave $3.00 and devin $2.00 about what fraction of his money does he have left

*March 3, 2009*

**math**

kevin has $11.00 he gave terrell ave $3.00 and devin $2.00 about what fraction of his money does he have left

*March 3, 2009*

**algebra**

I am coming up with (-5,-2,4) for my answer and I see you x=5

*February 26, 2009*

**algebra**

solve system of equation 5x+2y+z=-25 5x-3y-z=-23 3x+y+2z=-9

*February 26, 2009*

**algebra**

Did I do this problem right? (2y+5w+6)(5y+5w-4) 2y(5y)+ 2y(5w) + 2y(-4) + 5w(5y) + 5w(5w)+ 5w(-4) + 6(5y) + 6(5w) + 6(-4) then I multiplied: 10y^2 + 10wy - 8y + 25wy + 25w^2 - 20w + 30y + 30w - 24 then I combined like terms: 10y^2 + 15wy + 25w^2 + 22y + 10w - 24 final answer: ...

*February 16, 2009*

**algebra**

ok I finished the problem. Is this right? 2y(5y)+ 2y(5w) + 2y(-4) + 5w(5y) + 5w(5w)+ 5w(-4) + 6(5y) + 6(5w) + 6(-4) then I multiplied: 10y^2 + 10wy - 8y + 25wy + 25w^2 - 20w + 30y + 30w - 24 then I combined like terms: 10y^2 + 15wy + 25w^2 + 22y + 10w - 24 final answer: 10y^2...

*February 16, 2009*

**algebra**

I don't even know where to begin with this problem. multiply (2y+5w+6)(5y+5w-4)

*February 16, 2009*

**chemistry**

Ca(ClO3)2 + KCl --> CaCl2 + 3O2 + KCl Mass of test tube = 7.918g Mass of KCl/Ca(ClO3)2 mixture + tube = 19.164g Mass of KCl/CaCl2 residue + tube = 18.635g What is the weight % of Ca from the Ca(ClO3)2 impurity in the original mixture?

*February 11, 2009*

**Math**

The directions say to use a grapking utility to approximate (to two-decimal-place accuracy) any relative minimum or maximum values of the function: y=x^3 - 6x^2 + 15 Can someone please help me because my graphing calculator is not working!!!

*February 8, 2009*

**analogies**

man its hard

*February 4, 2009*

**CHEMISTRY URGENT PLZ HELP**

thanks damon

*January 18, 2009*

**CHEMISTRY URGENT PLZ HELP**

uh i don't think that's how u do it because i think you need to add and remove electrons from two separate reactions first before multiplying it out...but thank you anyway

*January 18, 2009*

**CHEMISTRY URGENT PLZ HELP**

First of all I am not the same person as before...his name was Max, my name is Kevin so i do not know that you answer this question before. Secondly, I do not know what you mean about about loss of 2 electrons, how would i use hydrogen to balance the charges when I have: SO3(2...

*January 18, 2009*

**CHEMISTRY URGENT PLZ HELP**

Write a balanced equation for the following reduction-oxidation reaction. SO3(2-) + MnO4(-) --- SO4(2–) + Mn(2+) can someone help me step by step??

*January 18, 2009*

**CHEMISTRY**

Write a balanced equation for the following reduction-oxidation reaction. SO3(2-) + MnO4(-) --- SO4(2–) + Mn(2+) can someone help me step by step??

*January 18, 2009*

**English lit.>Grendel**

Having trouble understanding the book Grendel...is there a site you know of that may help? Thank you, Kevin

*January 15, 2009*

**physics**

An object starts from rest and accelerates uniformly down an incline. If the object reaches a speed of 40 m/s in 5 seconds, what is its average speed?

*January 2, 2009*

**college algebra**

That's very cool! Thank you for your time!

*December 9, 2008*

**college algebra**

Find the sum of the first 500 positive integers. thanks for any help!

*December 9, 2008*

**college algebra**

find the general term of the following sequence 1/3, 3/5, 5/7, 7/9, ... thanks for any help!

*December 9, 2008*

**math**

find the general term of the following sequence 1/3, 3/5, 5/7, 7/9, ... thanks for any help!

*December 9, 2008*

**s.s**

i think that several states ratified the Constitution only after they were promised that a bill will protecting individual rights would be added to it. Many Antifederalists did not think that the Constitution would protect personal freedoms.

*December 3, 2008*

**s.s**

Why did Congress add the Bill of rights?

*December 3, 2008*

**s.s**

What was the main argument of the Antifederalists against the Constitution?

*December 3, 2008*

**Thermochemistry**

So q=mc(Tf-Ti) could be written as Delta H=mc(Tf-Ti) assuming the pressure is constant?

*December 2, 2008*

**Thermochemistry**

I'm confused about the difference between the q in q=mc(Tf-Ti) and (Delta)H, or enthalpy. What exactly does enthalpy mean and how is that different than q? (I'm also confused about what Gibbs Free Energy actually means; I know that if it's negative, the reaction is...

*December 2, 2008*

**CHEM**

NH3 is a base because it accepts a proton from H2O.

*November 20, 2008*

**Calculus**

Thank You Sir

*November 16, 2008*

**S.S**

What impact did the Virginia Statute for religious freedom have on the U.S government?

*November 9, 2008*

**Biology**

What portion of the brain is responsible for voso motor control?

*October 28, 2008*

**Science**

A little aluminum boat (mass of 14.50g) has a volume of 450.00cm3. The boat is placed in a small pool of water and carefully filled with pennies. If each penny has a mass of 2.50g, how many pennies can be added to the boat before it sinks?

*October 16, 2008*

**Social Studies**

Why did the British army march on Lexington and Concord

*October 13, 2008*

**Physics**

A bird watcher meanders through the woods, walking 0.35 km due east, 0.65 km due south, and 2.05 km in a direction 31.0° north of west. The time required for this trip is 3.50 h. Determine the magnitude and direction (relative to due west) of the bird watcher's. Find ...

*October 11, 2008*

**4th grade science**

it does boil at 100c I have tred it with a science project in fourt grade

*September 30, 2008*

**science**

Describe the biological interrelationships among the life forms in inda

*September 23, 2008*

**Mathematics**

3x-3y=12 3x+2y=-3 2x+y=4 Solve each by reduced row echelon form and if no solution, say it is inconsistent.

*September 23, 2008*

**Mathematics**

Carletta has $10,000 to invest. As her financial consultant you recommend that she invest in Treasury Bills that yield 6%, Treasury Bonds that yield 7%, and coroporate bonds that yield 8%. Carletta wants to have an annual income of $680, and the amount invested in corporate ...

*September 23, 2008*

**math**

The first thing that you to is distribute the -5 to both the terms in parenthesese. So you get -10W-5=25. than you add five to both sides and get -10w=30. The last thing you do is divide both sides by -10. w=-3.

*September 23, 2008*

**Mathematics**

At Harlan County Damn in Nebraska, the U.S. Bureau reports that the storage content of the reservoir decreased from 117,811 acre-feet (38.4 billon gallons of water) on Septmber 6, 2006 to 115,579 acre-feet (37.7 billion gallons of water) on October 6, 2006. Suppose that the ...

*September 8, 2008*

**social studies**

unscramble idmieeflt to make two words

*September 5, 2008*

**social studies**

unscramble arfzunrdon two words

*August 30, 2008*

**Calc**

This is a piecewise function on one graph: f(x)= 3, -4 <or= x <or= 1 -x+2, 1 < x < 3 x-5, 3 <or= x <or= 7 The coordinates are (-4,3) (-1,3) (3,-1) (3,-2) (7,2) So what would the graph look like if it is:y= abs(f(x)), y=2f(abs(x)), y=f(-x), y=-f(x)-3, y=f(x+3...

*August 18, 2008*

**chem**

I tried C and it marked it wrong

*August 8, 2008*

**Economics**

What is the connection between profit maximization and "fair" prices Are all profit maximization prices fair

*July 23, 2008*

**Economics**

What happens to the marginal utility per dollar of shoes if the priece of shoes goes up, and how should consumers respond to this to maximize utility

*July 23, 2008*

**Economics**

What is more important to the consumer: Marginal utility or marginal utility per dollar and why

*July 23, 2008*

**social studies**

unscramble the following to make two words arfzurdon

*June 21, 2008*

**social studies**

unscramble the following to make two words rveessevssur

*June 21, 2008*

**social studies**

what Canadian capital did U.S troops burn down in 1813

*June 17, 2008*

**math**

1/5 is 40 pages so 40x5=240 so there are 240 pages in the book

*May 24, 2008*

**math**

Hannah had dinner at her favorite restaurant. If the sales rate is 4% and the sales tax on the meal came to $1.25, what was the total cost of the meal, including sales tax and a 20% tip?

*April 26, 2008*

**math**

A school has 6th, 7th and 8th period Social Studies classes. One student from each class will be chosen to represent the school in an essay contest. The 6th period finalists are Mike, Sara, Luis and Ed. The 7th period finalists are Ben, Eric, and Sandy. The 8th period ...

*April 26, 2008*

**math**

There are 8 singers competing at a talent show. In how many different orders can the singer appear?

*April 26, 2008*

**u.s.history**

Why did the soviet union feel that it was necessary to place nuclear missile in cuba? In what Asian country did the u.s. place nuclear weapons that could fire on western Russia? What waas the significance of the u-2 flight? Why did Kennedy issue a quarantine instead of a ...

*April 8, 2008*

**u.s.history**

What is the significance of 13 days

*April 8, 2008*

**math riddle ALGEBRA WITH PIZZAZZ**

How does a tree feel after a hard day at work?

*April 6, 2008*

**math riddle ALGEBRA WITH PIZZAZZ**

Why does Beethoven now spend all his time erasing music?

*April 6, 2008*

**math riddle ALGEBRA WITH PIZZAZZ**

What is it called when a sea bird lands on a channel marker?

*April 6, 2008*

**English-Ms Sue Please help**

1. Identify and name fallancy below and explain. This measure is of sufficient importance that our representatives should have the integrity to bring it to a vote. My answer: I believed, the fallancy was a scapegoating because the author was blaming the representatives should ...

*April 6, 2008*

**Critical Thinking**

Writeacher, I believed, the fallancy was a scapegoating because the author was blaming the representatives should have the integrity. Please advices,

*April 5, 2008*

**Critical Thinking**

Identify and name fallancy below and explain. This measure is of sufficient importance that our representatives should have the integrity to bring it to a vote. Please help, thank you,

*April 5, 2008*

**Critical Thinking**

Ms. Sue, I belived, the rhetoricla device was euphemism because the late-term procedure was adopt. On the other way, the opposition refer to the different bill name. Kevin,

*April 5, 2008*

**Critical Thinking**

Please help and Identify the rhetorical devices used by the sentence below and explain. The bill would also adopt a federal ban on late-term procedures that opponents refer to as partial-birth abortions. Thank you,

*April 5, 2008*

**Critical Thinking**

why and how could you apply critical thinking when evaluating articles, media, advertising, and conversations?

*March 31, 2008*

**chem/stoichiometry**

What volume of oxygen gas is produced when 17.5 grams of KBrO3 decomposes? and the equation is KBrO3==>KBr+30 HELP ME PLZ

*March 16, 2008*

**math**

write the numbers of 4s in each number how many 4s in 40

*March 12, 2008*

**Chemistry**

could you please check my work? thanks. For the reaction between reactants A and B below, if 4.925 moles of A is placed into a flask with excess B it is found that the amount of A remaining after 6.85 seconds is 2.737 moles. 2A (g) + B (g)-----> 3 C (g) a. find the rate of ...

*February 25, 2008*

**math-Algebra**

i don't get this 8-9*.83333333333 does not equal 21*.83333333333-17 WHen you substitute in 5/6 it doesn't equal PLEASE HELP TNX!!!!!!

*February 13, 2008*

**fornt class**

what are the steps of the registration process form the viewpoint of front desk agent?

*January 31, 2008*

**Chemistry**

This is the equation ln(P2/P1) = -DHvap/R * (1/T2- 1/T1) but how do i get the pressure values and tempature values?

*January 31, 2008*

**Chemistry**

When a student plotted ln [vapor pressure of a gas] vs. inverse Kelvin temperature, she obtained a straight line with a slope equal to -8.000 x 10^3 K. According to the Clausius Clapeyron equation, Hvap is ? KJ/mol

*January 31, 2008*

**chemistry**

The total pressure in a flask containing air and ethanol at 257C is 878 mm Hg. The pressure of the air in the flask at 257C is 762 mm Hg. If the flask is immersed in a water bath at 400C, the total pressure is 980 mm Hg. The vapor pressure of ethanol at the new temperature is ...

*January 31, 2008*

**Statistics**

This is a goodness-of-fit question that I've been trying to wrap my head around for sometime, but I don't understand it since there are two values instead of one. So far, the teacher has only taught us how to deal with one set of observed values. UCLA conducted a ...

*December 9, 2007*

**science**

what are the chemical reactions involved in Glycolysis? What are the chemical reactions involved in Photosynthesis? What is the binomial name for MRSA? Is it a virus or a bacteriuM? If it is a virus what group does it belong to? If it is a bacterium what shape is it? Who came ...

*December 6, 2007*

**math**

Every hockey card has front side and a back side. How many possible outcomes are there if you flip a hockey card on a desk?

*November 25, 2007*

**math in general**

what is the point of proofs?

*November 21, 2007*

**geometry**

Give the reason for the step taken from a proof. <1 is the supplement of <2---->Given <3 is the supplement of <4---->Given <2 = <4----------------------->Given <1 = <3----------------------->? a. linear pair postulate b. congruent ...

*October 3, 2007*

**geometry**

Identify the property of congruence. If <P = <Q, then <Q = <P. when i use the = sign just replace it with the "is congruent to" sign. The one with the little wiggly line above the equal sign.

*October 3, 2007*

**History**

Where the dutch the first to establish a colony in Maryland?

*September 28, 2007*

**History**

Why did England colonize the New World later than the rest of Europe? What political and religious conditions had created a century of conflict in England? What factors finally pushed the English west, across the ocean?

*September 28, 2007*

**math**

what are the properties

*September 19, 2007*

**Math**

i need help

*September 6, 2007*

**medecine**

les gènes les plus en aval specifient l'dentité des segments les plus antérieurs ou medians de l'embryon?

*August 29, 2007*

**medecine**

la langue modèle-t-elle l'étage antérieur ou postérieur du palais

*August 29, 2007*

**statistics**

Provide an appropriate response. On an exam on probability concepts, Mary had an answer of 13/8 for one problem. Explain how she knew that this result was correct.

*August 29, 2007*

**statistics**

Suppose you buy 1 ticket for $1 out of a lottery of 1,000 tickets where the price for the one winning ticket is to be $500. What is your expected value?

*August 28, 2007*

**math**

Provide an appropriate response. On an exam on probability concepts, Mary had an answer of 13/8 for one problem. Explain how she knew that this result was correct.

*August 28, 2007*

**Geometry - Angle of rotation**

I hate keystone 2

*August 2, 2007*

**math**

can anyone please help me with this problem. thanks Each week, Florida Citrus, Inc., uses a single machine for 150 hours to distill orange and grapefruit juice into concentrates that are then stored in two separate 1000-gallon tanks before being frozen. (One tank is for orange...

*July 5, 2007*

**Math**

Is there any way that you can find the area of a circle without using pi? Well, since you can also use the formula pi r^2, any such method would be equivalent to calculating pi in some way.

*June 13, 2007*

**Spanish - Please Help!**

Can you please help me with the grammar, spelling, and sentence structure of the following Spanish sentences? I need to know if I wrote them correctly. Thanks. 1) El embajador soviético está dando vuelta al azul. 2) Mire, yo están bailando encima de la ...

*June 4, 2007*

**Math**

It's been a long time!!!! but I need to express a ratio of 5416 to 9934 in the form of 1 : x give answer to 1 dec point. All I could get was 2708 : 4967 but it doesn't appear right. 5416/9934 = 0.5452, or 1/1.83419 in 1/x format If you want the answer to within one ...

*May 8, 2007*

**Chem 12**

Okay, this is a two-part question and the unit is acids and bases. Ka for NH4 is 5.6 x 10^ -10 Kb for NH3 is 1.8 x 10^ -5 1. Determine the pH of a solution prepared by adding 0.0500 mole of solid ammonium chloride to 100mL of a 0.150 molar solution of ammonia. 2. If 0.0800 ...

*March 27, 2007*

**algebra1**

How do I solve this x/3=-4? multiply both sides by 3 Please stop posting under sundry names. You are doing yourself no good. What do you mean by sundry names? What's up with you telling me this because I don't know what you mean? My name is Kevin Shaw! This is my best ...

*March 23, 2007*

**math**

the answer is LIVING IN X AISLE

*March 23, 2007*