Friday

October 9, 2015
Total # Posts: 808

**chemistry**

2H2+1O2=2H2O delta H=-136 kJ A) how many joules are released when 35.0 grams H2O form B)how many grams of hydrogen burn when 278 kJ are released. C) Draw a potential energy diagram of this reaction.
*May 7, 2012*

**science, chemistry**

2Al(s)+ 3Cl2(g)=2AlCl3(s) For the above reaction calculate: A) delta H, then state whether the reaction is endothermic or exothermic B) delta s, then whether the reaction becomes more or less disorder. C) delta G, the state whether the reaction is spontaneous or non-spontaneous
*May 7, 2012*

**Chemistry**

The free energy of a single electron falling through a potential difference of one volt is 1 electronvolt (eV). Therefore, on a per electron basis, x volts → x eV. Calculate the maximum wavelength of light (in nanometers) that provides enough energy to an electron to ...
*May 6, 2012*

**science-chemistry**

a bicycle tire that has a volume of 0.85L is inflated to 140 pounds per square inch. What will be the pressure in the tire if the number of moles of gas is doubled?
*April 29, 2012*

**Science-Chemistry**

and do i do the same thing for number 2?
*April 29, 2012*

**Science-Chemistry**

1.)A sample of oxygen took 55 seconds to travel a certain distance. How long would it take for the same number of moles of nitrogen to travel the same distance. 2.) A sample of hydrogen gas traveled 45m in a given amount of time. An unknown gas traveled 7.6m in the same amount...
*April 29, 2012*

**science-chemistry**

can u help me on part c a little more?
*April 29, 2012*

**science-chemistry **

please anwser soon, a rigid 4.10L flask contains a mixture of 1.25 moles of H2, 0.250 mole of O2, and sufficient Ar so that the partial pressure of Ar in the flask is 1.00 atm. The temperature is 63.5 degrees C A) Calculate the total pressure in the flask B) calculate the mole...
*April 29, 2012*

**Chemistry**

2CO(g) + O2(g) 2CO2(g) Go = -511.6 kJ and So = -173.1 J/K at 314 K and 1 atm. The maximum amount of work that could be done by this reaction when 2.43 moles of CO(g) react at standard conditions at this temperature is__________ kJ. how?!
*April 26, 2012*

**algebra**

Cupcakes cost $1.50 each to produce with fixed cost of $50. a) Express the cost C, of producing the cupcakes as a linear function of x cupcakes produced. b)Find the average cost, C=C/x and simplify appropriately. c) What is the horizontal asymptote of C? Interpret. d) Graph C ...
*April 16, 2012*

**math**

There are 20 10% off cards, 10 15% off cards, 6 20% off cards and 4 50% off cards. What is the probability that a person will draw a 50% off card on the third draw?
*April 12, 2012*

**Accounting**

$10,000,000 face value, zero coupon bonds due in 20 years, priced on the market to yield 8% compounded semiannually.
*April 10, 2012*

**Customer Relation**

I know what a internal customer is, but what are some ways you can resolve conflict with a internal customer.
*March 31, 2012*

**Business**

Is it possible for a small business to oversegment its market?
*March 29, 2012*

**Math**

Showing work, what is 32.4 divide by 1038? :)
*March 22, 2012*

**calculus**

Let z = ∫e^(sin(t))dt from x to y a = x b = y I tried thinking about it like a chain rule but even then i'm a little unsure. I know dz/dt = e^(sin(t)). Can you please point me in the right direction if i'm supposed to use the chain rule.
*March 7, 2012*

**math**

James spent 62 % of high school budget on books. In degrees what measurement would that be on a circle graph? A. 62% B. 162% C. 177% D. 223%
*February 28, 2012*

**calculus**

sketching the level curve of f(x,y) = y/(x^2 + y^2) Just wondering if there is a way to get the equation of the line cause I have no clue if im supposed to do it another way or im just rusty and need to review my precalc notes.
*February 25, 2012*

**Algebra 1**

-c(11c+4)
*February 16, 2012*

**math**

A square and a rectangle each have a perimeter of 100 feet. Explain how this is possible.
*February 6, 2012*

**science**

The pull of gravity keeps the Moon in orbit around Earth. The distance between the Earth and Moon is about 380,000 kilometers. A crew of astronauts leaves Earth on a Monday and lands on the Moon on a Thursday. They land on the side of the Moon facing away from the Earth. On ...
*February 2, 2012*

**finite MAth**

dent who wants to buy 3 CDs, but assume that there are 4 CDs featuring the piano, 6 CDs featuring the trumpet, and 7 CDs featuring the saxophone. (1) In how many different ways can the 3 CD's be selected? (2) In how many ways can the selection be made if CD's featuring...
*January 26, 2012*

**finite MAth**

Assume that the student has a cup with 14 writing implements: 7 pencils, 5 ball point pens, and 2 felt-tip pens. (1) In how many ways can the student select 8 writing implements? (2) In how many ways can the selection be made if no more than one ball point pen is selected?
*January 26, 2012*

**Finite MAth**

Assume that the committee consists of 5 Republicans and 7 Democrats. A subcommittee consisting of 6 people is to be selected. (1) How many such subcommittees are possible if each subcommittee must contain exactly 3 Republicans and 3 Democrats? (1) How many such subcommittees ...
*January 26, 2012*

**Finite MAth**

Assume that you have 6 different types of vegetables and 9 different types of fruit. A vegetable salad consists of a mixture of any 3 types of vegetables, and a fruit salad consists of a mixture of 3 kinds of fruit. (1) In how many different ways can you prepare a vegetable ...
*January 26, 2012*

**Finite MAth**

Assume that the set S has 7 elements. How many subsets of S have at most 3 elements
*January 26, 2012*

**chem**

How many grams of iron metal do you expect to be produced when 245 grams of an 80.5 percent by mass iron (II) nitrate solution reacts with excess aluminum metal? Show all of the work needed to solve this problem. 2 Al (s) + 3 Fe(NO3)2 (aq) 3 Fe (s) + 2 Al(NO3)3 (aq)
*January 17, 2012*

**chem**

How many grams of a stock solution that is 87.0 percent H2SO4 by mass would be needed to make 200 grams of a 35.5 percent by mass solution? Show all of the work needed to solve this problem
*January 17, 2012*

**chem**

How many moles of glucose (C6H12O6) are in 1.6 liters of a 0.75 M C6H12O6 solution?
*January 17, 2012*

**chem**

How many moles of sodium chloride (NaCl) solute are in 155 grams of an 85.5 percent by mass solution?
*January 17, 2012*

**chem**

How many grams of zinc metal will react completely with 8.2 liters of 3.5 M HCl? Show all of the work needed to solve this problem. Zn (s) + 2 HCl (aq) ZnCl2 (aq) + H2 (g)
*January 17, 2012*

**chem**

Describe, in detail, how to make 3.0 liters of a 3.5 molar HCl solution from an 18.5 molar HCl stock solution.
*January 17, 2012*

**10th chem**

Describe, in detail, how to make 3.0 liters of a 3.5 molar HCl solution from an 18.5 molar HCl stock solution.
*January 17, 2012*

**10th Grade Chem**

How many grams of zinc metal will react completely with 8.2 liters of 3.5 M HCl
*January 16, 2012*

**math**

f(x)=x2+2x-5
*January 16, 2012*

**Math**

what is 918 out of 3400? Pls explain.
*January 11, 2012*

**math**

about 12.6% of the bones are vertebrae in the human back. how many bones in the human body are vertebrae?
*January 11, 2012*

**math**

about 12.6% of the bones are vertebrae in the human back. how many bones in the human body are vertebrae?
*January 11, 2012*

**math**

just use this formula A squared times B squares so you will take 23x23=529 then 13x13=169 then u take both answers and add them and it is 698 and after that u get the square root of 698 and it is 26.41
*January 5, 2012*

**Social Studies**

it depends on what part you are talkin about because the reason the U.S got into it was only because we went to south korea and then the north invaded soo the U.S backed them up and still to this day we are still over there in korea
*January 4, 2012*

**Law**

Under the _____, the solid waste provisions are more supportive than punitive in nature. (Points : 2) Gutter Act Bathroom Act Resource Conservation and Recovery Act Drain Act is it C?
*December 10, 2011*

**Math**

How do you factor 49t6 - 4k8?
*December 7, 2011*

**math**

95% of the employees read any newspaper, therefore 5% don't read and newspaper. D should be 147
*December 5, 2011*

**math**

Almost everyone at the Bright Corporation reads a daily newspaper on a regular basis. In fact, altogether te company employs 2,940 people,of whom70% read The Daily News,45% read The Courier and 60% read The inquirer. One fourth of the employees reads The Daily News and The ...
*December 5, 2011*

**Law (Check)**

(TCO 6) A director of a corporation does NOT have a duty to: A)act diligently and in good faith in conducting corporate business. B)act resourcefully and always make the best business judgment. C)act on behalf of the beneficiary with great integrity. D)act in the best ...
*November 27, 2011*

**Law**

A retirement plan based on age in which an employer offers $10,000 as a base early retirement incentive for 55-year-olds, $8,000 for 56-year-olds, and so on, and nothing to persons age 60 or older. Does such a plan amount to illegal age discrimination? My Response: No, its not...
*November 20, 2011*

**General**

Could someone hope to avoid the obligations of contract on grounds that a ad was a misleading inducement to sign the contract?
*November 10, 2011*

**Law**

Many notable characters, songs, and movies that were previously set to enter into the public domain have not as of yet due to repeated extensions of the copyright laws that have extended protections. Many of the Disney characters, including Mickey Mouse, Donald Duck, and Goofy...
*November 10, 2011*

**Organic Chem**

The following reaction is a single-step, bimolecular reaction: CH3Br + NaOH ---> CH3OH + NaBr When the concentrations of CH3Br and NaOH are both 0.150 M, the rate of the reaction is 0.0090 M/s. a) what is the rate of the reaction if the concentration of CH3Br is doubled? ...
*November 9, 2011*

**Check Business Law**

(TCO 4) State court jurisdiction can be established in all of the following ways EXCEPT: a)when the defendant is a resident of the state, a summons may be served at that residence. b)cases involving more than $75,000 where the plaintiff and the defendant are citizens of ...
*November 6, 2011*

**English**

The strategies for writing positive or neutral message. is my response correct?: In the opening avoid personal information state your main idea so it wouldn't be overlooked. In the body of the message provide reasons and/or details for the main idea. Close your message ...
*November 6, 2011*

**Business **

Yes, that's why I asked I see the same thing. I'm going to go with A though. Thanks
*October 30, 2011*

**Business **

which statement is false about Globaliztion? Free markets are effective than government rules or national boundries are increasing in importance. I think its A, that free markets are more effective than government rules.
*October 30, 2011*

**physics**

If you were to expend 10 J of work to push a 1 C charge against an electric field, what would be its change of voltage? (b) When released, what will be the kinetic energy of the 1 C charge of the previous problem if it flies past its starting position?
*September 7, 2011*

**math**

give an example of two fractions whose sum can be simplified to 1/2.
*September 6, 2011*

**math**

How to draw a picture grid to show 1.8 divided by 0.6? Write the quotient.
*August 23, 2011*

**math**

In 1968, the estimated population of the world was 3,559,028,982 people. When this number is written in expanded form using exponents, one power of 10 would not be represented. Which power of 10? Why?
*August 9, 2011*

**chemistry**

Using the equations and enthalpy values provided, which mathematical expression can be used to determine the unknown enthalpy change of the decomposition of propane? 3 C + 3 O2 3 CO2 H =-1182 kJ 4 H2 + 2 O2 4 H2O H = -1144 kJ C3H8 + 5 O2 3 CO2 + 4 H2O H = -2222 kJ C3H8 3 C + 4...
*June 17, 2011*

**Biology**

How could a farmer tell whether his tomatoes are pure red or heterozygous?
*June 11, 2011*

**statistics(best fit line)**

I'm trying to graph a set of points with data, and I have been given the equation for the best fit line, but when I graph it, the line doesn't match up with the data. It's either too steep or too low. I think it has to do with my intervals for the x and y axes. On ...
*June 8, 2011*

**maths**

A cylindrical water tank has a diameter of 140cm.To begin with it is full of water.A leak starts at the bottom so that it loses 33l of water in 1hour.How long will it take for the water level to fall by 30cm?
*April 12, 2011*

**math**

32 is _____ % of 100? 3 is 5% of what number?
*March 17, 2011*

**Chem**

Cyclopropane (C3H6) reacts to form propene (C3H6) in the gas phase. The reaction is first order in cylclopropane and has a rate constant of 5.87*10^-4 at 485degreesC. If a 2.5L reaction vessel initially contains 724 torr of cyclopropane at 485degreesC, how long will it take ...
*February 24, 2011*

**Resume writing**

can someone proofread my resume profile. Highly motivated University of Maryland University College student seeks exposure to the practical application of Management Studies concepts as a management professional in a dynamic, fast paced corporate environment. Comprehensive ...
*February 19, 2011*

**geometry**

misty drew a triangle.one angle is 120 degres.two of the sides measure 5 cm and 8 cm in lengh. the sum of the lengths off all tree sides is 21 cm. wat kind of triangle did misty draw?
*January 24, 2011*

**algebra**

-6/8 - 6/8 =
*January 20, 2011*

**Algebra II**

-6/8 - 6/8 =
*January 19, 2011*

**college math 209**

-6/8 - 6/8 =
*January 15, 2011*

**Business finance**

In a discount interest loan, you pay the interest payment up front. For example, if a 1-year loan is stated as $10,000 and the interest rate is 10 percent, the borrower “pays” 0.10 x $10,000 = $1,000 immediately, thereby receiving net funds of $9,000 and repaying $...
*January 10, 2011*

**Finance**

When Samuel Pepys, the British diarist, lent his friend Lady Sandwich £100 in 1668, he charged her 6 percent interest. If the loan was due at the end of 1 year, how much would Lady Sandwich have had to pay if interest was (a) compounded annually, (b) compounded ...
*January 10, 2011*

**Reading**

thank you, it fit perfectly. I'm also stuck on my last analogy story : narrative :: editorial : ? it has 10 letters, the 3rd letter is R, last letter is E
*January 10, 2011*

**Reading**

Analogies: court : docket :: trip : ? I'm working on a crossword puzzle and it has 9 letters, possibly starting with the letter I
*January 10, 2011*

**Math**

I'm basicly confused on the formula and how the numbers are in the fromlua
*December 11, 2010*

**math**

that makes no sense hey im only in the 8th grade
*November 2, 2010*

**math**

so is the equation true or false
*November 2, 2010*

**math**

true or false 1 to the negative fifth power=(-1) fifth power
*November 2, 2010*

**band**

like what?
*November 2, 2010*

**algebra**

that makes more senese then what i wrote thnxs
*November 2, 2010*

**algebra**

it is s to the fourth power
*November 2, 2010*

**algebra**

i need to simplify s to the tenth power over s to the sixth power
*November 2, 2010*

**business**

You have recently been hired as a new manager hired into a failing division in a company. The product line is outdated and losing market share, inter-departmental communication is adversarial, and competition for corporate funding is fierce. How are you, a new individual, ...
*November 1, 2010*

**5th grade**

Identify the pronouns in each sentence. Then decide if each is nominative (N), objective (O), or possessive (P). Write your answer according to the following example: Q: My favorite actor is better than yours. A: My; P, yours; P 1. Why wasn't he invited to Anila's ...
*October 17, 2010*

**physics**

A 0.30 ball is thrown with a speed of 13 at an angle of 32. What is its speed at its highest point?
*October 7, 2010*

**physics**

I'm sorry avertical = 0 m/s r = 9.72×10−2 m Fr of the inward radial force on the bob in the horizontal plane.= 1.14 N T tension force on string = 2.74 N
*October 3, 2010*

**physics**

A bob of mass = 0.250 is suspended from a fixed point with a massless string of length = 23.0 . You will investigate the motion in which the string traces a conical surface with half-angle = 25.0. What tangential speed must the bob have so that it moves in a horizontal circle ...
*October 3, 2010*

**algebra 1**

how many quarts of pinnaple juice should theo add to 20 percent pinnaple drink to create 5 quarts of 50 percent pinnaple juice mixture
*September 27, 2010*

**Database Essentials**

2 questions. what is the importance of databases in business world? what are the the different objects you find in a Microsoft Access database file?
*September 5, 2010*

**Financial Accounting**

What is the importance of GAAP? I know GAAP is a collection of methods used to process, prepare, and present public accounting information.
*September 4, 2010*

**Professional Writing**

Okay, I understand what you both are saying. Thanks Writeacher and Ms.Sue
*September 3, 2010*

**Professional Writing**

how can the formatting of business messages received effect their level of success whether its a professional or customer reading? I feel as if it doesn't have any impact on the level of success, is their a wrong way to format business messages according to the target ...
*September 3, 2010*

**Professional Writing**

oh okay, thanks
*September 3, 2010*

**Professional Writing**

What does it mean to use a "process-oriented approach" in writing?
*September 3, 2010*

**Financial Accounting**

Where can I find several small articles on business and accounting ethics?
*September 3, 2010*

**english**

write 10 things about something then make pictures to go with it.
*September 1, 2010*

**english**

How do i do a Walam Olum? Where do i start? I can not draw at all and it looks like that is part of it... please help.
*September 1, 2010*

**MATHS**

5 women complete half a job in 15 days. How long would it take 3 women to do the whole job? Thanks for your help
*August 19, 2010*

**MATHS**

A man caught a fish. It weight 5/7kg + 5/7 its own weight.What did it weigh?
*August 10, 2010*

**math/linear equation**

9414
*July 30, 2010*

**Self-Employed**

That's why I asked for proofreading. Specifics are included in the other writing I did not have to go into detail for what I needed proofread.
*June 17, 2010*

**Self-Employed**

Can someone proofread the text before I place it in the about us section on a website I'm creating. Bryan Martin, Freelance Marketer, has been promoting and marketing businesses since 2008. He began studying how business operates and their potential grow through marketing...
*June 17, 2010*