Wednesday

May 4, 2016
Total # Posts: 149

**Chemistry**

How many kilojoules are absorbed when 266 g of PCl5 reacts? PCl5(g)→PCl3(g)+Cl2(g)ΔH=+67kJ
*April 5, 2016*

**Chemistry**

How many kilojoules are released when 130 g of Si reacts with chlorine? Si(s)+2Cl2(g)→SiCl4(g)ΔH=−657kJ
*April 5, 2016*

**Finance: Mortgages**

A borrower received a 30-year ARM mortgage loan for $200,000. Rate caps are 3/2/6 (initial adjustment cap/periodic interest rate cap/lifetime interest rate cap). The start rate is 3.50% and the loan adjusts every 12 months for the life of the mortgage. The index used for this ...
*March 30, 2016*

**chemistry **

How many liters of hydrogen will be produced when 3766 g of aluminum are combined with hydrobromic acid to make aluminum bromide?
*March 23, 2016*

**chemistry**

Describe the circumstances in which the following processes could be used to separate the components of a mixture. -sublimation -crystallization -evaporation of a solvent from a solution -dissolving of an impure substance in a solvent
*January 27, 2016*

**math**

how can i solve for x given this?? pls. show detailed solution..just can't figure it out.thanks in advance! 6cosx+3cos35cosx-3sin35sinX=7cosx
*December 3, 2015*

**math**

how can i solve for x given this?? pls. show detailed solution..just can't figure it out.thanks in advance! 6cosx+3cos35cosx-3sin35sinX=7cosx
*December 3, 2015*

**math**

how to solve 1/100-2/100+3/100-4/100+....+99/100-1?? and this?? -1/100+2/100-3/100+4/100-....-99/100+1??
*November 27, 2015*

**Hisotry**

Thank you very much
*November 19, 2015*

**Hisotry**

Does anyone have any examples of how the first amendment can be used today? Thank you!
*November 19, 2015*

**Math**

What positive, two-digit number, when doubled and added to two, gives a sum that is the original number with its digits reversed?
*November 13, 2015*

**Biology **

Which example best illustrates the difference between a community and a population? A)The two terms are interchangeable, a population IS a community. B)All the people in a town would be a community; all their cattle would be a population. C)All the people in a town would be a ...
*May 27, 2015*

**English**

8.C ? I think ? 6. C? or B?
*May 27, 2015*

**English**

8. I'm unsure.
*May 27, 2015*

**English**

6. Which example contains the same type of reasoning found in this portion of section one? Many people think that all combative sports should be strictly monitored and regulated by state commissions. It is obvious that the Ultimate Fighting Championship (UFC) is an ...
*May 27, 2015*

**English**

Thank you Ms.Sue
*May 27, 2015*

**English**

For the first question "Select the rebuttal statement that BEST refutes the viewpoint in section one."
*May 27, 2015*

**English**

American interest in mixed martial arts is growing. Both male and female athletes are invited to compete, although this sport is not recommended for the prima donna. This full contact fighting combines various martial arts techniques so fighters with different styles can ...
*May 27, 2015*

**math**

Santana wants to cover a gift box shaped like a rectangular prism with foil. The foil costs $0.03 per square inch. Santana has a choice between Box A which is 8 inches long, 3 inches wide, and 6 inches high, and Box B which is 10 inches long, 3 inches wide, and 4 inches high. ...
*April 23, 2015*

**Chemistry**

Thank you so much!
*April 2, 2015*

**Chemistry**

I am trying to solve a buffer problem. I know I need to use the Henderson-Hasselblach equation but I am not getting the correct answer. The problem is: Propionic acid is a weak monoprotic acid with Ka = 1.3×10-5 M. NaOH(s) was gradually added to 1.00 L of 1.29×10-2...
*April 2, 2015*

**statistics**

The mayor of the town of Quahog, Rhode Island, Adam West, conducted a study to determine the mean household income of his constituents. The study surveyed 500 households and determined that the sample mean was $30,000. The population standard deviation is $4,800. If a ...
*March 16, 2015*

**physics **

radius R of the orbit of a geosynchronous satellite that circles the earth. (Note that R is measured from the center of the earth, not the surface.) You may use the following constants: The universal gravitational constant G is 6.67×10−11N⋅m2/kg2. The mass of...
*December 14, 2014*

**Creative Writing**

Normally, I don't struggle with grammar, but this has me stuck. In this sentence, "One could call him an addict, because women were his drug," would you leave drug plural or singular, or is there something else to do to fix that?
*December 8, 2014*

**Math**

We're doing sequence things in class how do I find the general term of this set (4,8,6,16,8,32,10,64). The answer must be in an equation. The next in the sequence would be 12, 128. I thought the answer was f(x) = 2x but that doesn't account for 6,8,10
*November 20, 2014*

**consumer math**

$799.99 with 40% off rounded to the nearest dollar
*November 9, 2014*

**Math**

I need help finding the greatest common factor between these two expressions 3u^3x^5y^8 and 21u^6x^5 I was thinking 7u^3y^8
*August 12, 2014*

**geometry**

Alice purchased 30 decorative stone square blocks to create an enclosed rectangular garden area. Each square block measures 1 foot by 1 foot, and one possible arrangement is shown. Including the arrangement shown, in how many distinct ways can Alice arrange the blocks to ...
*July 5, 2014*

**Physics**

A ball is thrown straight upward and rises to a maximum height of 20 m above its launch point. At what height above its launch point has the speed of the ball decreased to one-half of its initial value?
*January 24, 2014*

**chemistry **

190 grams of potassium iodide is placed in 100 cm3 at 60 degrees Celsius. the solution is cooled to 30 degrees Celsius. how many grams will settle out?
*September 19, 2013*

**MATH HELP**

Find the volume of the solid obtained by rotating the region underneath the graph of f(x) = (x)/sqrt(x^3+1) about the y-axis over the interval (1, 10)
*July 9, 2013*

**MATH**

Compute the volume of the solid obtained by rotating the region in the first quadrant encolsed by the graphs of the functions y = x^2 and y = sqrt(x) about the y-axis. I keep getting (1/3)pi and can't figure out what I'm doing wrong!
*July 9, 2013*

**Math**

How can I find 2 equations with infinitely many solutions? Thanks
*March 10, 2013*

**Math**

So for y= 4-2x will be 2y=8-2x?
*March 10, 2013*

**Math**

Thank you
*March 10, 2013*

**Math**

How can I find 2 equations with infinitely many solutions? Thanks
*March 10, 2013*

**Math-Calculus**

Please Help D:. Min/Max Problems 4. Joan has 50ft of interlocking stone available of fencing off a flower garden in the form of a circular sector. Find the radius of the circle that will yield a flower garden with the largest are if Joan uses all the stone.
*March 6, 2013*

**lindy**

how many different flags can be made? if there are 5 colors,but the flag must have 3 bands of color
*February 9, 2013*

**math**

a chairman and vice-chairman are to be elected from 7 candidates.how many different results are possible ?
*February 9, 2013*

**History**

To what extent was the French Revolution caused by new political ideas and influences?
*November 28, 2012*

**Biology**

Can you give me an order from 1 to 3 for the following materials, 1 being the best insulator and 3 being the poorest? styrofoam, plastic, aluminum
*November 12, 2012*

**Biology**

hi! so I have to make an experiment on heat loss & insulation and so, I did an experiment on which material insulates best against the wind of a fan--styrofoam, plastic or aluminum can. each has hot water in it but the styrofoam took the longest for the hot water to cool ...
*November 12, 2012*

**Biology**

so how can I use one of those materials (or just keep the fan) to make an experiment that tests body temperature / insulation / etc?
*November 9, 2012*

**Biology**

hi! so for science we have to make an experiment on temperature. we have to base our experiment on the given materials (which include test tubes, aluminum foil, cotton, fan) i chose a fan and I'm thinking of doing an experiment on how the strength of wind affects body ...
*November 9, 2012*

**Precalc/Trig Word Problem**

478
*October 8, 2012*

**chemistry**

0.450mol of Na2S in 1.50L of solution
*October 3, 2012*

**history**

doing an essay for english, i need help writing it. what were the diverse purposes of Englands american colonies and how were those purposes altered in the early years? i just need 3 purposes. if anyone can help i would appreciate it!!!! please!
*August 31, 2012*

**Maths**

Sorry I should have added that I was working it out as a derivitive
*August 14, 2012*

**Maths**

What steps were taken to get px-2x^2 to be p-4x?? I can't work out what happened to the 'x' after 'p'. I can see that 2x^2 equals 4x though. Any help would be much appreciated :) Thanks
*August 14, 2012*

**History**

Almost every one has several wives and especially the Sagamores, since they cannot maintain their power and keep up the number of their dependents. I need to find one more. What does this line mean? keep up the number of dependents unless they have not only many children to ...
*February 24, 2012*

**History**

Is there any "European bias or bias" in this article? To obtain the necessaries of life, they (he Indians of Arcadia) endure cold and hunger in an extraordianry manner. During eight or ten days, if the necessity is imposed on them, they will follow the chase in ...
*February 24, 2012*

**History**

Thank you!!
*February 22, 2012*

**History**

What was the non-importation movement? Is this right? What does no taxation without representation mean? We will only pay taxes that our representatives in a House or Assembly [or similar body] have approved and passed into a law
*February 22, 2012*

**physics**

(c) If the wave has amplitude 1.80 m when it speed is 200 m/s, what will be its amplitude where the water is 9.00 m deep?
*September 14, 2011*

**physics**

(c) If the wave has amplitude 1.80 m when it speed is 200 m/s, what will be its amplitude where the water is 9.00 m deep?
*September 14, 2011*

**Legal Studies**

Hey :) If a juvenile is held in remand does this mean that their being held in custody (a juvenile detention center etc) while their waiting trial (i.e. havent been sentenced yet)? I'm just having some trouble understanding the meaning of remand. Any help on this would be ...
*August 16, 2011*

**physics**

A 5.4 cm diameter horizontal pipe gradually narrows to 3.7 cm. When water flows through this pipe at a certain rate, the gauge pressure in these two sections is 35.0 kPa and 21.0 kPa, respectively. What is the volume rate of flow?
*May 9, 2011*

**physics**

Calculate the force, required of the "deltoid" muscle to hold up the outstretched arm shown in the figure . The total mass of the arm is 2.9 kg.
*May 3, 2011*

**chemistry**

Need to do a lab of finding the density of the Molarity of 1M NaCl without having any equipments..How best to do so..A procedure would be appreciated
*May 1, 2011*

**Chemistry**

How to determine the energy in J calories and K to convert one pound of ice to steam
*May 1, 2011*

**physics**

A teenager pushes tangentially on a small hand-driven merry-go-round and is able to accelerate it from rest to a frequency of 12 in 9.0 . Assume the merry-go-round is a uniform disk of radius 2.2 and has a mass of 650 , and two children (each with a mass of 29 ) sit opposite ...
*April 19, 2011*

**physics**

The bolts on the cylinder head of an engine require tightening to a torque of 63 . If the six-sided bolt head is 15 in diameter, estimate the force applied near each of the six points by a socket wrench.
*April 19, 2011*

**physics**

A small rubber wheel is used to drive a large pottery wheel, and they are mounted so that their circular edges touch. The small wheel has a radius of 1.8 and accelerates at the rate of 7.0 , and it is in contact with the pottery wheel (radius 30.0 ) without slipping. Calculate...
*April 19, 2011*

**physics**

A centrifuge accelerates uniformly from rest to 18000 rpm in 180 s. Through how many revolutions did it turn in this time?
*April 19, 2011*

**physics**

A grinding wheel 0.28 m in diameter rotates at 2400 rpm. What is the acceleration of a point on the edge of the grinding wheel?
*April 19, 2011*

**physics**

A radioactive nucleus at rest decays into a second nucleus, an electron, and a neutrino. The electron and neutrino are emitted at right angles and have momenta of 8.55×10−23 and 5.33×10−23 , respectively. What is the magnitude of the momentum of the ...
*April 13, 2011*

**Physics**

A 24 rifle bullet traveling 230 buries itself in a 3.9 pendulum hanging on a 3.0 long string, which makes the pendulum swing upward in an arc. Determine the vertical and horizontal components of the pendulum's displacement.
*April 13, 2011*

**Salisbury University**

How long will it take a 480 N motor to lift a 335 kg piano to a sixth-story window 15.0 m above?
*April 6, 2011*

**physics**

A 280-g wood block is firmly attached to a very light horizontal spring, as shown in the figure. The block can slide along a table where the coefficient of friction is 0.30. A force of 22 N compresses the spring 18 cm. If the spring is released from this position, how far ...
*April 6, 2011*

**physics**

A 280-g wood block is firmly attached to a very light horizontal spring, as shown in the figure. The block can slide along a table where the coefficient of friction is 0.30. A force of 22 N compresses the spring 18 cm. If the spring is released from this position, how far ...
*April 6, 2011*

**physics**

A 110-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 420 N. For the first 13 m the floor is frictionless, and for the next 13 m the coefficient of friction is 0.35. What is the final speed of the crate?
*April 6, 2011*

**physics**

A 53 kg bungee jumper jumps from a bridge. She is tied to a bungee cord whose unstretched length is 13 m, and falls a total of 35 m. Calculate the spring stiffness constant k of the bungee cord, assuming Hooke's law applies.
*April 6, 2011*

**Physics**

A novice skier, starting from rest, slides down a frictionless 24.0 incline whose vertical height is 215. How fast is she going when she reaches the bottom?
*April 6, 2011*

**Salisbury University**

A spring with 53 hangs vertically next to a ruler. The end of the spring is next to the 21- mark on the ruler. If a 3.0- mass is now attached to the end of the spring, where will the end of the spring line up with the ruler marks?
*April 6, 2011*

**history**

where is the mississippi?
*March 31, 2011*

**language**

whatis muttered
*March 31, 2011*

**Math**

A 30-m tall flag pole and its shadow form the sides of a right triangle. On this particular day, the sun rises at 6 AM and sets at 6 PM. At what time of the morning (to the nearest minute) will the length of the shadow be exactly 40 m? (Hint: determine the angle of elevation ...
*March 27, 2011*

**math (plz help)**

1. 46 because a1=30 a2=34 a3=38 a4=42 2.No the 8th row is is 58 and the 9th row is 62. 3. 40+(25x4) = 140
*March 14, 2011*

**College Chemistry**

But A stands for concentration..how would i obtain it from the data given?
*February 6, 2011*

**College Chemistry**

The following data are obtained for the decomposition of N2O5 at a certain temperature: 2N2O5(g)↔4NO2(g) + O2(g) Time(s) 0 200 400 600 800 N2O5 (atm) 2.10 1.85 1.63 1.43 1.26 Find the rate constant kobs for this first-order decomposition reaction in sec-1 So far I have ...
*February 6, 2011*

**math**

Terrance describes the amount of money made based on the # of hours worked by the function rule y= 10h. Given this function how much $ does terrance earn for each hour worked?
*February 2, 2011*

**6th grade**

Well...youre trying to find what F equals 1. do 0.4 divided by 2.4 2.take that answer and divide it by six !!!Then that's your answer!!!
*December 8, 2010*

**gammar**

A lot of people don’t have wills. Everyone needs a will, but not all people have one. Wills are important because they explain who gets your stuff after you die. You don’t want your things going to someone you don’t want them to go to. My Aunt Martha went to a ...
*October 3, 2010*

**gammar**

• Read two of the five paragraphs on the second page of this appendix. Write a brief paragraph of about 150 words in which you do the following: o Identify which paragraph was more effective and analyze why this is so. o Include a discussion of sentence variety and the ...
*October 3, 2010*

**music**

what is the function on health insurance? What is the functions of disability insurance? whatis the functions of life insurance?
*September 19, 2010*

**English**

is anyone availble
*September 19, 2010*

**grammar**

If the interest rates are higher, than insted of spending money for purchasing new things. People go for saving to get interest on their money. With increase in interest rates the purchasing power of people decreases. If something will cost far more than it is worth because ...
*September 19, 2010*

**English**

If the interest rates are higher, than insted of spending money for purchasing new things. People go for saving to get interest on their money. With increase in interest rates the purchasing power of people decreases. If something will cost far more than it is worth because ...
*September 19, 2010*

**English**

In a total of 200 words, write two paragraphs with about how interest rates affect our purchasing decision. Identify the topic sentence in each by underlining it. I need help with Identifying topic sentence
*September 19, 2010*

**math**

ket f(x)=5 x − 4 and g(x) = x^2 − 8. Compute the following functions. 1. f(g(x)) = 2. g(f(x)) = 3. f(f(x)) = 4. g(g(x)) =
*September 17, 2010*

**math**

Let h(x) = 3 x2 + 2 x + 1. Let g(x) = 3√{x} + 3. (Note: If there is a nonmathematical symbol in the preceding expression, then your browser doesn't have the math symbol font. Please follow the instructions on the Tools page in Oncourse to install the STIX math fonts...
*September 17, 2010*

**math**

let f(x)=5 x − 4 and g(x) = x^2 − 8. Compute the following functions. 1. f(g(x)) = 2. g(f(x)) = 3. f(f(x)) = 4. g(g(x)) =
*September 17, 2010*

**grammar**

I think I did this right. The most important and tough goal in an individual’s life is setting up long-term goals to help him/her financially. It can be anything from savings to house building to children’s education or marriage to retirement plan. These are the ...
*September 12, 2010*

**grammar**

I need help with highlighting the adverbs and underlining the adjectives. Use at least five adverbs and five adjectives to write a 150- to 300-word review of a movie, sporting event, musical performance, or television show. o Bold each adverb. o Underline each adjective The ...
*September 12, 2010*

**Grammar**

I don’t want to buy that.(that,) It’s to(too) expensive. Your welcome.(welcome,) I was happy to help. An evening out(out,) can be a great way to clear one’s mind.(?) I love my car.(car,) It’s interior is so comfortable.
*August 29, 2010*

**Grammar**

Their(There) are three kids in the room.(?) We have been married for 20 years, and are(our) relationship is as strong as ever. I’m having trouble with my car. Can you give me some advise(advice)? The diplomats(Diplomats), are doing what they can to restore peace. I know ...
*August 29, 2010*

**Grammar**

Thanks you Ms.Sue I am making some corrections am I on the right track. We have been married for 20 years, and are(our) relationship is as strong as ever. I’m(I’am) having trouble with my car. Can you give me some advise? The diplomats, are doing what they can to ...
*August 29, 2010*

**Grammar**

Their are three kids in the room. We have been married for 20 years, and are relationship is as strong as ever. I’m having trouble with my car. Can you give me some advise? The diplomats are doing what they can to restore peace. I know it is important, so I will defiantly...
*August 29, 2010*

**math**

Choose the better value - 5 kg of birdseed for $6.50 or 8 kg for $10.80?
*June 13, 2010*

**Math**

Hi. If you don't have a circumference in the question, how do you find the radius!?
*April 26, 2010*