Wednesday

August 20, 2014

August 20, 2014

Total # Posts: 1,594

**chemistry**

Based on the mass of O2 produced can you calculate the gram molecular weight? Chem lab on oxygen production 10g KClO3 reacts with heat to produce 2KCl(s)+3O2.What is the mass produced? 10g/122.6=0.0816 mole of KClO3 0.00816x3moleO2/2moleKClO3=0.1224 moleO2 0.1224 molex32g O2/...
*October 18, 2010*

**writing**

I need to write several sentences describing a interaction with a friend or family member about personal finance or credit cards, using five different pronouns in the sentences. Can you please give me some understanding or examples?
*October 17, 2010*

**Thermochemistry**

A total of 2.00 mol of a compound is allowed to react in a foam coffee cup that contains 167 g of water. The reaction caused the temperature of the water to rise from 21.0 to 24.7 degrees C. What is the enthalpy?
*October 17, 2010*

**Thermochemistry**

It takes 45.0 J to raise the temperature of an 9.70 g piece of unknown metal from 13.0 degrees C to 24.5 degreesC. What is the specific heat for the metal?
*October 17, 2010*

**Math**

1. Look at the two monomials below. 9u3v2w4 15u4v4w3 What is the least common multiple (LCM) of the monomials shown above? 3u3v2w3 45u4v4w4 45u3v2w3 3u4v4w4
*October 15, 2010*

** DERIVATIVE!!!**

9(x-5)^2/3
*October 14, 2010*

**Math-Calc AB**

e^(-x/2) + xe^(-x/2) = 0 solve for x
*October 14, 2010*

**math**

Distribute: 2b-6+5=3b-3 Isolate b: -b=-2 b=2
*October 14, 2010*

**Thank you Reiny**

Thanks I think I somewhat get it-Thanks again for the explanations
*October 12, 2010*

**Please check-Reiny**

Could you check these two problems? 3sqrt (y+2) = 3 is y = 25 Answers were: true or false I said true because I did it like this Square both sides=y + 2 = 3^3 y+2 = 27 y = 25 and sqrt (2y-6) = 3-y for y answes are: no solution 5 3,5 3 I said 3 because I did it like this: 8y -...
*October 12, 2010*

**Algebra-Please help me!**

Thank you
*October 12, 2010*

**Algebra-Please help me!**

Hi, I'm totally stuck! Problem: sqrt(x-3) = sqrt (2) -sqrt(x) I know I square them to get them out of square roots but after that I'm stuck- answers: -25/8 25/8 no solution 1/8 Please show me how its done Thank you
*October 12, 2010*

**Chemistry**

A gas mixture contains 1.16 g N2 and 0.89 g O2 in a 1.49 L container at 16 degrees C. What is partial pressure of N2 & O2? *I already know the mole fraction for N2 is 0.60, and 0.40 for O2. I just don't know where to go from here.
*October 11, 2010*

**Chemistry**

Imagine that you have a 5.50 L gas tank and a 3.50 L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch. If you fill the larger tank with oxygen to a pressure of 155 atm, to what pressure should you fill ...
*October 11, 2010*

**Critical Reading**

thanks very much
*October 10, 2010*

**Critical Reading**

It is true that every author has some bias? I would say true, but then I am not sure if this means in general or if you are able to tell in there writing true or false
*October 10, 2010*

**Critical Reading**

false?
*October 10, 2010*

**Critical Reading**

Inductive arguments leave no room for doubt as to the truth of their conclusions. true or false
*October 10, 2010*

**Critical Reading**

Thank you so much for your help, I was having a hard time with my questions, this site is great. thanks again!
*October 10, 2010*

**Critical Reading**

so outlining the content is that meaning the whole paper? I was confused
*October 10, 2010*

**Critical Reading**

c?
*October 10, 2010*

**Critical Reading**

As a critical reader, before you begin an evaluation you should be able to a)highlight and underline interesting facts. b) outline the content. c)locate the author's conclusion
*October 10, 2010*

**Critical Reading**

false
*October 10, 2010*

**Critical Reading**

Critical readers would not ask the same questions of themselves that they ask of the writer's work. true or false thanks!
*October 10, 2010*

**Critical Reading**

thx!!
*October 10, 2010*

**Critical Reading**

Making inferences is an abstract critical thinking skill that involves the active and blended use of several sources of information, including a.)the application of the basiic method of problem solving b)using background knowledge,personal experience, and clues/facts of the ...
*October 10, 2010*

**math-algebra**

I got 422.08 but it says that is still wrong can you help
*October 9, 2010*

**math-algebra**

A launched rocket has an altitude, in meters, given by the polynomial h = vt -4.9t^2, where h is the height, in meters, from which the launch occurs, at velocity v in meters per second, and t is the number of seconds for which the rocket is airborne. If a rocket is launched ...
*October 9, 2010*

**CALCULUS!!!(revised) please help**

A price (in dollars) and demand for a product are related by 2x^2-5xp+50p^2=21200 If the price is increasing at a rate of 2 dollars per month when the price is 20 dollars, find the rate of change of the demand. Rate of change of demand =
*October 7, 2010*

**CALCULUS!!!**

A price (in dollars) and demand for a product are related by If the price is increasing at a rate of 2 dollars per month when the price is 20 dollars, find the rate of change of the demand. Rate of change of demand =
*October 7, 2010*

**bus stats**

60% of households have internet, what is the probability that 3 randomly selected households will have internet?
*October 6, 2010*

**posting again! please help!! physics**

A skateboarder, starting from rest, rolls down a 14.0-m ramp. When she arrives at the bottom of the ramp her speed is 7.40 m/s. (a) Determine the magnitude of her acceleration, assumed to be constant. (b) If the ramp is inclined at 20.5° with respect to the ground, what is...
*October 6, 2010*

**physics!!**

A skateboarder, starting from rest, rolls down a 14.0-m ramp. When she arrives at the bottom of the ramp her speed is 7.40 m/s. (a) Determine the magnitude of her acceleration, assumed to be constant. (b) If the ramp is inclined at 20.5° with respect to the ground, what is...
*October 5, 2010*

**3rd grade**

write in order from least to greatest the six numbers whose digits are 2, 8, and 9
*October 5, 2010*

**physics**

A block of weight w = 25.0 N sits on a frictionless inclined plane, which makes an angle = 25.0 with respect to the horizontal, as shown in the figure. A force of magnitude F= 10.6 N , applied parallel to the incline, is just sufficient to pull the block up the plane at ...
*October 3, 2010*

**Physics**

yes, he will be able to make it to the other roof.
*October 2, 2010*

**Medical**

Select an accreditation agency and name an area of records management that is affected by its guidelines? How does accreditation affect the practical activities of record management in hospitals?
*October 2, 2010*

**PHYSIC help!**

a cart is pushed uphill on a ramp, goes up and momentarily stops, and then goes back down. predict the position vs. time, velocity vs. time, and the acceleration vs. time for this. IDK how to do this! i tried on the first one. on the graph, i have it looking like an upside-...
*September 30, 2010*

**social studies**

litigants?
*September 29, 2010*

**8TH Grade social studies**

what does the constitution define treaty as?
*September 29, 2010*

**math**

The diameters of a wooden dowel produced by a new machine are normally distributed with a mean of 0.55 inches and a standard deviation of 0.01 inches. What percent of the dowels will have a diameter less than 0.57?
*September 28, 2010*

**childcare**

1 A check text book 2. is correct 3. is D 4. is A Everything else looks good
*September 28, 2010*

**childcare**

I would love to help, what is the name of the book. I remember taking this test...
*September 28, 2010*

**accounting**

What is the adjusting entry to this problem on Dec 31st? On October 15, the school agreed to teach a four-month class (beginning immediately) for an individual for $3,100 tuition per month payable at the end of the class. The services are being provided as agreed, and no ...
*September 23, 2010*

**math**

In a local college, 60% of the math majors are women. Fifteen math majors are chosen at random.
*September 21, 2010*

**math**

mary has 22 ribbons some of the ribbons are first place what expression shows how many of mary ribbons are not for first place
*September 21, 2010*

**math**

The theater group performed on Friday and Saturday night. Three hundred and twenty four attended on Friday, and 33 more attended on Saturday. How many people saw the show?
*September 19, 2010*

**math**

I have been asked to identify the "situation" in a story problem. What does that mean?
*September 16, 2010*

**3rd grade math**

Using four different digits, what is the least sun you can get when you add two 2-digit numbers? Write your problem.
*September 16, 2010*

**Calculus**

f(x)= x^3; f(x)= (x+DELTAx)-f(x)/ x^3
*September 15, 2010*

**Cultural Diversity**

What are the linguistics of Puerto Rican Americans
*September 13, 2010*

**Cultural Diversity**

What does familial conventions or statuses mean? Thank You
*September 12, 2010*

**Environmental Science**

What is a few terrestrial resource issues? I have to pick one to do a powerpoint and I need some ideas. Thank You
*September 10, 2010*

**com155**

In the passage below bold the adverbs and underline the adjectives. NYPD Detectives Christopher Danson and P.K. Highsmith (Dwayne Johnson and Samuel L. Jackson) are the baddest and most beloved cops in New York City. They don’t get tattoos – other men get tattoos of ...
*September 4, 2010*

**Environmental Science**

what are the health and environmental effects of sulfuric acid (H2SO4)?
*August 28, 2010*

**Environmental Science**

What are the sources of sulfuric acid (H2SO4)?
*August 28, 2010*

**Cultural Diversity**

what are two to three characteristics of Orientalism? How may Orientalism and prejudice contribute to hate crimes against Muslim and Arabic groups?
*August 26, 2010*

**math Help**

(-infinity, -2), (-2,0), (0,2), and (2, infinity)
*August 24, 2010*

**Chemistry**

What concentration of aqueous CaCl2 solution freezes at -10.2ºC? The freezing point of pure water is 0.0ºC and Kf of pure water is -1.86ºC/m. A. 5.48 m B. 11.0 m C. 1.83 m D. 6.12 m E. 2.74 m
*August 21, 2010*

**Cultural Diversity**

What years did Sojourner Truth help free slaves and become visible in the fight against slavery through her speeches and publications?
*August 21, 2010*

**Cultural Diversity**

what year did Harriet Tubman help develope the Underground RailRoad?
*August 21, 2010*

**Algebra**

-2x+y+3z=7 x+2y+z=4 2x-3y-2z=-10 How do you solve this?
*August 20, 2010*

**statistics**

The ages of students at a university are normally distributed with a mean of 21. What percentage of the student body is at least 21 years old?
*August 17, 2010*

**Cultural Diversity**

Through out history have the Colonized English been effected by any of the following forms of discrimination, or did they participate in any of the following forms of discrimination? Dual labor market, environmental justice issues, affirmative action, redlining, double ...
*August 15, 2010*

**Cultural Diversity**

What does "glass ceiling, glass walls, or glass escalator mean"?
*August 15, 2010*

**Algebra**

Commuting students. At a well-known university, 1/4 of the undergraduate students commute, and 1/3 of the graduate students commute. One-tenth of the undergraduate students drive more than 40 miles daily, and 1/6 of the graduate students drive more than 40 miles daily. If ...
*August 11, 2010*

**reimbursement methods**

what formula do i follow for reimbursement the hospital receives from medicare
*August 9, 2010*

**college chemistry**

When solutions of AgNO3 and NaOH react, the balanced molecular equation is 2AgNO3(aq) + 2NaOH(aq) Ag2O(s) + 2NaNO3(aq) + H2O(l) How much Ag2O is produced when 0.200 g of AgNO3 and 0.200 g of NaOH react?
*August 7, 2010*

**math**

rewrite the statement using percent notation out of every100 eligible people 87 voted in a recent election
*August 7, 2010*

**math**

2/3/10=1.8/r
*August 7, 2010*

**Algebra**

Volume of a container? A cubic shipping container had a volume of a^3 cubic meters. The height was decreased by a whole number of meters and the width was increased by a whole number of meters so that the volume of the container is now a^3+2a^2 3a cubic meters. By how ...
*August 5, 2010*

**Math-please check my answer**

Find the slope of the following points(8,9) and (10,-9) -9 - 9 / 10 - 8 = -18/2 = -9 is the slope?
*August 1, 2010*

**math-PLEASE HELP**

so it would be -9 - 9 / 10 - 8 = -18/2 = -9 is the slope?
*August 1, 2010*

**math-PLEASE HELP**

Find the slope of the following points(8,9) and (10,-9)
*August 1, 2010*

**math-please check my answer!!**

5x-7y=-14 7y-5x=14 what is the solution of the system of equations? ANSWER IS B??? A) A point B)Infinitely many solutions C) no solution Is the system consistent ot inconsistent? ANSWER IS CONSISTENT Is the system dependent or independent? ANSWER IS DEPENDENT??? Are my answers...
*August 1, 2010*

**math-word problem**

The width of a rectangle is fixed at 21cm. What lengths will make the perimeter greater than 80cm. Please help with this word problem I do not even know where to begin.
*July 31, 2010*

**math**

Evaluate a+b/6 for a =33 and b=15 33+15/6 48/6 8<-----is my answer is that correct?
*July 31, 2010*

**math-please check my answer**

Find the slope of these two points (3,5)and (-5,-2) Is the slope 3?
*July 31, 2010*

**math-please check my answer**

Translate the following the product of 47% and some number (using q for some number) .47q is my answer correct?
*July 31, 2010*

**math-please check my answer**

what is the slope of the following 2 points (0,-3) and (0,5) Please help I think the slope is -3 am I right?
*July 31, 2010*

**math**

what is the slope of the following 2 points (0,-3) and (0,5)
*July 30, 2010*

**math-please check my answer**

0.6x + 4 < 1.0x - 1 6x + 40 < 10x - 10 4x > 50 x > 12.5 can someone please check my work and tell me if I am right?
*July 30, 2010*

**math-please check my answer**

50% of what number is 45? I did 45*.50=22.5 is that the correct answer?
*July 30, 2010*

**algebra**

ok so sorry I see where I went wrong. Silly me! 3*5 5*5=30
*July 30, 2010*

**algebra**

yes mam
*July 30, 2010*

**algebra**

A man finds three wallet on the ground containing $5. The next day, he finds five wallets, each containing $5. (Let's assume he's: 1) lucky, and 2) dishonest.) In all, how much did he find? 1 X 5 + 5 X 5 = 30 (order of operations) My teacher said this was not correct ...
*July 30, 2010*

**Algebra**

Can you tell me if I done this right? (5x10^14)-1 5*10^14-1 2*10-15
*July 29, 2010*

**Algebra**

(5x10^14)-1 I need help with this problem. If you can please show me step by step how to solve this I have 15 more of these to do so I really need detailed steps if it is not to much trouble.Thanks so much!
*July 29, 2010*

**Algebra**

I need help solving these two problems.... (-9r^3/t^6) and (30,000)(80,000)/(0.000006)(0.002) I do not even know where to start with either of them Thanks in advance for any help provided.
*July 28, 2010*

**Algebra**

Thank you so much!
*July 28, 2010*

**Algebra**

Square lot. Sam has a lot that he thought was a square, 200 feet by 200 feet. When he had it surveyed, he discovered that one side was x feet longer than he thought and that the other side was x feet shorter than he thought. a). Find a polynomial A(x) that represents the new ...
*July 28, 2010*

**Algebra**

Patchwork. A quilt patch cut in the shape of a triangle has a base of 5x inches and a height of 1,732x inches. What polynomial represents its area? Answer: Area of triangle is ½*b*h B=5x H=1732x A=1/2*5x*1732x=4330x^2 A=L*W L=2x-1 W=x+12 A=(2x-1)*(x+12) A=2x^+24x-x-12=...
*July 28, 2010*

**Algebra**

Swimming space. The length of a rectangular swimming pool is 2x-1meters, and the width is x+12 meters. Write a polynomial A (x) that represents the area. Find A (5) Answer: Area=(2x-1) (x+12)sq m A=2x(x+12)-1(x+12) =2x^2+24x-x-12 =2x^2+23x-12 sq m X=5 A=(2(5)-1) (5+12) =9*17 =...
*July 28, 2010*

**Math-PLEASE HELP DUE TONIGHT**

Hockey teams receive 2 points when they win and 1 point when they tie. One season, a team won a championship with 64 points. They won 11 more games than they tied. How many wins and how many ties did they have?
*July 25, 2010*

**MICROECONOMICS**

which one would have a comparative advantage if they specialize in producing 2.5 lbs of potatoes to one chicken
*July 25, 2010*

**math-algebra please help!**

Please me find the points to graph for the follow equations. x+3y<9, 3x+y<9, x>0, Y>0
*July 22, 2010*

**math-algebra**

Bayside Insurance offers two health plans. Under plan A, giselle would have to pay the first $130.00 of her medical bills, plus 25% of the rest. Under plan B, Giselle would pay the first $150, but only 20% of the rest. For what amount of meidcal bills will plan V save Giselle ...
*July 21, 2010*

**MAT/117**

a. Suppose that a market research company finds that at a price of p = $40, they would sell x = 37 tiles each month. If they lower the price to p = $25, then more people would purchase the tile, and they can expect to sell x = 52 tiles in a month’s time. Find the equation...
*July 19, 2010*

**medical language**

summarize the functions of the muscles.
*July 14, 2010*

**math-PLEASE HELP ASAP**

Solve using elimination.......answers must be in ordered pair form....(this is the last one I am confused on) 4x-9y=6.5 7y-2x=-4.5
*July 13, 2010*

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