Sunday

February 1, 2015

February 1, 2015

Total # Posts: 1,570

**Chemistry**

If I have storage tank containing 3.8 X 10E5 liters of water that is contaminated with NaOH and has a pH of 10.82. What volume of 0.1 M HCl is required to bring the pH= 7.0?
*June 21, 2012*

**algebra 2**

a flagpole casts a 60 foot shadow when the angle of elevation of the sun is 35 degrees. find the height of the flagpole
*June 15, 2012*

**Biology!!!**

What is the function of plasma?
*June 13, 2012*

**Math**

Find the input & output values of of the composite function c(t(m)). c(t) = 3t + 2 t(m) = m² - 1 where c is the cost and t is the hrs. and m is the # of minutes.
*June 1, 2012*

**Physics**

find the altitude change of a 10,000 kg fighter which climbs and in doing so loses 100 m/s of airspeed
*May 17, 2012*

**Physics**

find the altitude change of a 10,000 kg fighter which climbs and in doing so loses 100 m/s of airspeed
*May 17, 2012*

**BIOLOGY **

which nucleotide is always paired with adeine in a dna molecule
*May 16, 2012*

**Chemistry**

What is pH
*May 7, 2012*

**CHEMITRY**

what is solubility, in mol/L, of MgCO3 in a 0.65 mol/L solution of MgCL2 if the ksp of MgCO3 is 2.5*10^-5
*May 7, 2012*

**statistics**

a raido show host asked people to call in and wheater they support new legislation to promote cleaner sources of energy. based on this sample, she constructed a confidence interval to estimate the proportion of all listners to her show who support the legislation. is the ...
*May 6, 2012*

**statistics**

Hannah selected a simple random sample of all adults in her town and based on this sample, consrtucted a confidence interval for the mean salary of all adults in the town. however, the distribution of salaries in the town is not exactly normal. will the confidence interval ...
*May 6, 2012*

**CHEMISTRY**

THANK YOU :)
*May 5, 2012*

**CHEMISTRY**

if the [H] of a solution at 25degrees is 1.7*10^-4 mol/L, calculate the [OH] in mol/L, the PH, and the pOH?
*May 5, 2012*

**chem**

show why ka(kb)=kw for this pair of conjugate acid-base: H2C6H6O6 and HC6H66 ^-1
*May 5, 2012*

**chemistry **

the equilibrium system shown below was analyzed and the concentrations of HI(g, and I2(g) were found, in mol/L, to be 4.4, 3.2, 1.5 respectively. the equilibrium constant must be which f the following? H2(g) + I2(g)<> 2HI(g) + 65KJ
*May 5, 2012*

**chemistry**

why did u chose 05 mol instead of the given which is 1.5 mol
*May 5, 2012*

**chemistry**

YES IT IS :) THANK YOU VERY MUCH !!
*May 5, 2012*

**chemistry**

OOPSY I MEANT 3.0L
*May 5, 2012*

**chemistry**

6.0mol of ammonia gas is injected into a 3.0 mol L container. at equilibrium 1.5 mol of hydrogen gas is found in the container. the number of moles of ammonia gas left in the container must be which of the following?
*May 5, 2012*

**physics**

A fisherman's scale stretches 2.8 cm. when a 2.1 kg. fish hangs from it. What will be the frequency of vibration if the fish is pulled down and released so that it vibrates up and down?
*May 3, 2012*

**geometry**

how long is a string reaching from the top of a 20 ft pole to a point 13 ft from the bottom of the pole?
*May 2, 2012*

**Physics**

Does a generator act as a source or a load? thanks!
*May 1, 2012*

**English**

How are the words hasn't, haven't and had't alike?
*April 30, 2012*

**Bio- anatomy**

How can i describe in like 1 or two sentences "visual image processing" without using those three words. I am finding this really hard. Thanks!
*April 29, 2012*

**chemistry**

an unsaturated solution is made by completely dissolving 20.0 grams of NaNO3 in 100.0 grams of water at 20.0 degrees celcius. show a corrct numerical sat up for calculating the number of moles of nano3(gram-formula mass = 85.0 grams per mole) used to make this unsaturated ...
*April 23, 2012*

**Algebra**

Find the GCF of each set of monomials. 16, 20, 64 I got: 2,4,4,8 2,4,5,10 2,4,8,8,16,32 Would the greatest common factors be 2 and 4?
*April 23, 2012*

**Algebra**

Ohh, so 6, right?
*April 23, 2012*

**Algebra**

A bakery packages cookies in two sizes of boxes, one with 18 cookies and the other with 24 cookies. A small number of cookies are to be wrapped in cellophane before they are placed in a box. To save money, the bakery will use the same size cellophane packages for each box. How...
*April 23, 2012*

**Bio Anatomy**

Do you guys know of any sites that talks about the gentics of occipital lobe epilepsy?
*April 22, 2012*

**Algebra, Please Help!**

Devin attempted to solve the inequality -2x+6>10 following the steps below: •subtract 6 from both sides of the inequality. •divide both sides of the inequality by -2. He finds that x>-2. Clearly explain why this is not a correct solution. In your response, be ...
*April 20, 2012*

**Algebra**

Devin attempted to solve the inequality -2x+6>10 following the steps below: •subtract 6 from both sides of the inequality. •divide both sides of the inequality by -2. He finds that x>-2. Clearly explain why this is not a correct solution. In your response, be ...
*April 20, 2012*

**Algebra**

Oh sorry about that. Can you explain what undefined means and what domain means?
*April 20, 2012*

**Algebra**

Use the function to answer the question. f(x)=1/4-x For what value in the domain is the function undefined? Explain your answer.
*April 20, 2012*

**Algebra**

Oh ok, thanks.
*April 20, 2012*

**Algebra**

So they have to equal the exact number, even when you round up?
*April 20, 2012*

**Algebra**

Which equation shows an exact computation? A. 12/7 = 1.714 B. 2π = 44/7 C. 22/7x14 = 44 D. 2√2 = 2.818 And if possible, could you explain what exact computation is? Thank you.
*April 20, 2012*

**geometry**

If all of the diagonals are drawn from a vertex of a quadrilateral, how many triangles are formed?
*April 20, 2012*

**math**

3/27,1/27/,2/27
*April 19, 2012*

**Math Grade 12**

Right on :) , Thank you Ms.Sue Would you be able to please help me with another question ?
*April 18, 2012*

**Math Grade 12**

40 x 2 = 80 0.12x300=36 80+36=116 so for two ways would it be 40x2=80 0.12x600= 72 80+72=152. is that how much the round trip would cost me ?
*April 18, 2012*

**math**

You have decided to move 300km away from your current residence. The truck costs $40 per day and $0.12 per kilometre. If it will take you 2 days to return the truck, how much will the round trip cost you? (Assume that tax is included.)
*April 18, 2012*

**World Geography**

How has climate affected population patterns in Africa?
*April 18, 2012*

**World Geography**

Why have modernization projects in Africa not brought increased wealth to the region?
*April 18, 2012*

**World Geography**

Why have the attempts at modernizing many of the African economies not been able to increase the countries' wealth?
*April 18, 2012*

**french**

I dont know if any of you have read le compte de mont cristo but there are two questions I am confussed about. On what project did the abbot work? and after having encountered Dantes in prison, what did the abbot learn and what was his plan?
*April 16, 2012*

**bio anatomy**

whaat are some genetic variations of the occipital lobe?
*April 16, 2012*

**bio anatomy**

I am doing a paper on the occipital lobe and I am supose to talk about the pathology of it. i know that is like the study of disease of the lobe. So should i talk about different diseases that occur in the lobe? like maybe choose three different ones or the most common ones? ...
*April 16, 2012*

**Math Probability**

whats the answer?
*April 16, 2012*

**Statistics help please!!!**

The makers of the MAGNETIZER Engine Energizer System (EES) claim that it improves gas mileage and reduces emissions in automobiles by using magnetic free energy to increase the amount of oxygen in the fuel for greater combustion efficiency. Following are test results, ...
*April 15, 2012*

**Bio Anatomy**

I am doing a paper on the occipital lobe and I am supose to talk about the pathology of it. i know that is like the study of disease of the lobe. So should i talk about different diseases that occur in the lobe? like maybe choose three different ones or the most common ones? ...
*April 15, 2012*

**Statistics**

The makers of the MAGNETIZER Engine Energizer System (EES) claim that it improves gas mileage and reduces emissions in automobiles by using magnetic free energy to increase the amount of oxygen in the fuel for greater combustion efficiency. Following are test results, ...
*April 15, 2012*

**Speech (acronym help)**

I am doing a demo speech on how to make play dough and my four easy steps are 1. mix 2. add 3. stir and 4. kneed. These 4 make up MASK. I do not at all have to do my speech this way but I think it would be kinda cool if I could somehow relate a mask to the speech so that I ...
*April 14, 2012*

**history**

Anticolonial movements shared all but which of the following features? Answer A Some form of nationalism B Inspiration from traditional cultures as a means of shaping nationalism C Dissatisfaction among nationalists with their own exclusion from power D A steady commitment to ...
*April 12, 2012*

**history**

Which of the following best describes how many Europeans, living through the Great Depression, thought about political systems? a) All forms of governments are bad b) Liberalism is the best form of government c) Liberalism was in decline and authoritarianism was on the rise d...
*April 12, 2012*

** chem**

The pH of the nitrite buffer has changed from 3.00 to 2.80 by adding 11.0mL of 12.0M HCL. How many grams of solid sodium Hydroxide would the chemist add to the buffer to change the pH from 3.00 to 3.80?
*April 11, 2012*

**Government**

What restrictions on freedom of speech and freedom of the press are constitutionally permissible?
*April 9, 2012*

**math**

thanks harry :)
*April 9, 2012*

**math**

The mean of a set of 51 data points is 3.04. If a data value of 16 were added to the data set, what would be the approximate value of the new mean?
*April 9, 2012*

**msu**

As compared to its first year of operation, ABC company grew 8% in the second year and an additional 2% per year for the next two years. If total growth for years 2-4 was $45,000 over the first year’s sales of $150,000, how much did ABC grow in year 2?
*April 8, 2012*

**math**

A boat in calm seas travels 13km east and 35 km north. Find the distance and direction of the trip, relative to to the north.
*April 5, 2012*

**government**

B is wrong
*April 2, 2012*

**Life Orientation**

How is teenage pregnancy causes ill health,accident,crises and disasters within community
*April 2, 2012*

**calculus**

find implicit derivative of 2y^2 - x^2 = 3xy + 5
*April 1, 2012*

**Math!!!!**

Jessica deposits $6509 in bank at r% p.a. compounded half-yearly. If she obtains an amount of $6764 after 1 year, find the value of r.
*March 26, 2012*

**Math!!!!!**

Fanny invests $12000 at 6% p.a. For 2 years. Find the amount she will obtain after 2 years if the interest is compounded monthly
*March 26, 2012*

**Operations Management**

Explain the key interactions among marketing, design, manufacturing, and finance in product development?
*March 25, 2012*

**business**

Select a business activity or issue with which you are familiar. For that business activity in that industry or company, discuss how business managers apply the law that is relevant, and identify under what circumstances lawyers should become involved. Discuss alternative ...
*March 24, 2012*

**Math**

For a poll, 60 students were selected at random from the 6000 students at Calgon Community College. It turns out that 12 were in favor of higher parking fees to support extra police patrols of parking lots on campus. In this example, the sample proportion is:
*March 20, 2012*

**physics**

Measured to the horizontal Throw*
*March 15, 2012*

**physics**

You're on a magic bridge floating 25 meters above a lake. You through a rock at an angle of sixty degrees. It takes 5.8 seconds for the rock to reach it's highest point. (a) With what speed did you throw the rock? (b) How far away from the ...
*March 15, 2012*

**English**

I agree. They hardly knew each other. They were willing to die for each other soon after meeting. They didn't consider their families or the people they supposedly cared about in their actions.
*March 11, 2012*

**English**

I need help writing a thesis sentence for an analytical essay about Romeo and Juliet. The topic the teacher chose is "Romeo and Juliet face untimely deaths because they act recklessly and hastily. thanks!
*March 11, 2012*

**Alg 2 trig**

Y= 1/2 sin pi (x+pi/4) -1
*March 9, 2012*

**Alg 2 trig**

Write a sine equation for period= pie, amplitude=1/2, vertical shift up 1 and phase shift left pie/4. How would the equation be written?
*March 9, 2012*

**physics**

An object with mass 3.0 kg is attached to a spring with spring stiffness constant k = 300 N/m and is executing simple harmonic motion. When the object is 0.020 m from its equilibrium position, it is moving with a speed of 0.55 m/s. (a) Calculate the amplitude of the motion. m...
*March 7, 2012*

**Math **

Give three examples of the equations of parabolas that have (-2,0) and (6,0) as x-intercepts.
*March 2, 2012*

**pre-calc**

Given sin x = -5/6 and x is in Quadrant IV, find cos 2x (1 point)
*February 26, 2012*

**pre-calc**

Given sin x = -5/6 and x is in Quadrant IV, find cos 2x (1 point)
*February 26, 2012*

**Math!!!**

Mrs wong wants to invest $50000 for 3 years. Simple interest of 5% p.a. for the first year, and then interest compounded monthly at 3% p.a. in every subsequent year. Find the amount she will receive.
*February 26, 2012*

**math**

The building is 16 by 12 feet so, to the nearest tenth of a foot what distance (x) fom the building should time place the 16-ft ladder so that the top of the ladder will be 12 feet above the ground?
*February 24, 2012*

**physical chemistry**

A sample of the sugar D-ribose (C5H10O5) of mass 0.727g was placed in a constant volume calorimeter and then ignited in the prescence of excess oxygen. The temperature rose by 0.910K In a separate experiment in the same calorimeter, the combustion of 0.825g of benzoic acid for...
*February 23, 2012*

**math**

a box will hold seven 3-pound bags of pears. how many boxes will be needed for 90 pounds of pears?
*February 23, 2012*

**chemistry**

What mass of potassium nitrate would you have to heat in order to produce 1.00dm of oxygen at rtp?
*February 23, 2012*

**physical chemistry**

1.) Calculate delta rH for the freezing of water at one bar and -10 degrees C. The heat capacities are H2O(s)=36.9 JK-1mol-1 and H2O(l)=74.5JK-1mol-1. delta H for freezing of water at 0 degree C is -6602Jmol-1 (assume C is independent of temperature). 2.) Assume the hot brick ...
*February 21, 2012*

**Physics **

There is a box resting on a table connected to a second box hanging off the edge of the table by a string that is run through a pulley. The mass of the first box is 3.50 kg. and The mass of the second box is 2.8 kg. What is the tension in the string connecting the two boxes ...
*February 16, 2012*

**english**

how can you resolve cultural bias of staff members in the work place
*February 16, 2012*

**english**

what should be taken into consideration when cultural bias occurs
*February 16, 2012*

**Economics**

If the federal government enacts a tax on a monopoly, how would you expect the additional tax to affect the following: 1. Output produced by the monopoly 2. Prices charged by the monopoly 3. Profits of the monopoly
*February 14, 2012*

**Geometry**

If two angles are 120, then the other two must total 360-2*120 = 120 So each other angle is 60. When you draw diagonals in a rhombus, they form right angles at their intersection. So, what we have after we draw in the diagonals, is 4 triangles. Each triangle is 30-60-90. And ...
*February 14, 2012*

**Math**

think you mean "...8 turns of wire are..." I guess you mean that the wire starts at one end of the pipe and ends up at the other end of the pipe. So the wire has travelled 60 inches along the length of the pipe and 32 inches around the pipe. If you imagine the sides ...
*February 13, 2012*

**human resource **

1. Regulations governing the employer-employee relationship are based on agency law and failure of an employee/agent to act according to the employer's instructions could result in liability for the employer. 2. Misclassification of employees as...
*February 11, 2012*

**new american gov't 2**

The term, _____ , refers to the potential benefit a person gives up when he or she decides to do one thing instead of another.
*February 10, 2012*

**Algrbra I**

Help!! I do not understand how to work these types of problems. My instructor gives us really long formulas and charts for these and i don't get it!! Im good at algebra, I have an A in the class, so this is irritating to me! The radiator in a certain make of car needs to ...
*February 8, 2012*

**Physics**

. A rock thrown horizontally at a large bell 57.0 m away is heard to hit the bell 4.10 s later. If the speed of sound is 330 m/s, what was the speed (in meters/second) of the rock? (Disregard gravity.)
*February 7, 2012*

**Math**

Your softball team is raffling a stereo system and the total off 800 tickets have been sold. Your family bought 20 tickets. What is the probabilty that your family will not win?
*February 6, 2012*

**math**

values for area and length of right triangular prism with volume of 6
*January 31, 2012*

**psy**

A study wants to examine the relationship between student anxiety for an exam and the number of hours studied. The data is as follows: Student Anxiety Scores Study Hours 5 1 10 6 5 2 11 8 12 5 4 1 3 4 2 6 6 5 1 2 Why is a correlation the most appropriate statistic? What is the...
*January 31, 2012*

**math**

if my example is a y=kx one and y=-5 and x=10 which are directly proportional why can't I just isolate the "k" (constant) and solve as a regular algebraic equation?
*January 28, 2012*

**spelling**

analogy consonant blend for caught length with word that begins with scr,spr,str or thr
*January 25, 2012*

**math college algebra**

write the quadratic function f(x)-x^2+14x-50 in the form f(x)=a(x-h)^2+k by completing the square and graph
*January 23, 2012*

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