Friday

November 28, 2014

November 28, 2014

Total # Posts: 130

**chemistry**

A certain reaction is spontaneous at 72˚C. if the enthalpy change for the reaction is 19Kj/mol, what is the minimum value of ΔS (in J/K•mol) for the reaction?
*November 22, 2014*

**chemistry**

In a certain experiment a student finds that the PHs of 0.10 M solutions of three potassium salts KX, KY, and KZ are 7.0, 9.0, and 11.0, respectively. Arrange the acids HX, HY, and HZ in order of increasing acid strength.
*November 22, 2014*

**chemistry**

In a group 1 analysis, a student adds hydrochloric acid to the unknown solution to make [Cl-] = 0.15 M. Some PbCl2 precipitates. Calculate the concentration of Pb2+ remaining in solutions.
*November 22, 2014*

**math**

Find the maximum and minimum values of the given objective function on the indicated feasible region. M = 150 − x − y
*November 17, 2014*

**university of minnesota**

Find the maximum and minimum values of the given objective function on the indicated feasible region. M = 150 − x − y
*November 17, 2014*

**Math **

Joan ran for 2.25 hours burning 3075.5 calories per hour how many total calories does he burn
*November 16, 2014*

**math**

natasha had 7/8 gallon of paint. her brother ivan took 1/4 gallon to paint his model boat. natasha needs at least 1/2 gallon to paint her bookshelf. did ivan leave her enough paint?
*November 6, 2014*

**Math (Word Problem)**

An open gift box is to be made from a square piece of material by cutting four-centimeter squares from the corners and turning up the sides. The volume of the finished box is to be 576 cubic centimeters. How to find the size of the original piece of material?
*October 11, 2014*

**english**

write a analogy paragraph "the process of reading a good book"
*August 6, 2014*

**physics**

If the change in the value of 'g ' at a height 'h ' above the surface of earth is the same as at a depth 'x ' below it. When both x and h are much smaller than the radius of the earth. The relation between x and h is?
*June 18, 2014*

**physics**

If two stones projected from the same point with the same speed but at angles pi/3 and pi/6 respectively have their ranges R₁ and R₂ then a)R1=2R2 B)R1=R2 C)R1=5R2 D)R1=25R2
*June 15, 2014*

**physics**

"a drag racing car starts from rest at t= 0 and moves along astraight line with velocity given by V = bt^2 where b isconstant. The expression for the distance traveled by this car from its position at t = 0 is a)bt^3 b)bt^3/3
*June 4, 2014*

**physics**

A particle moves along the x-axis from an initial position xi to a final position xf. Of the following values of xi and xf, which results in a negative displacement? (a) xi = 6 m, xf = 4 m (b) xi = ?4 m, xf = ?2 m (c) xi = ?4 m, xf = 2 m (d) xi = 4 m, xf = 6 m (e) xi = ?4 m, ...
*June 2, 2014*

**accounts**

People from all over the world moving from sole proprietorship to partnerships due to the numerous benefits they get. You are required to tell why the focus is shifting from sole proprietorship to partnership? Explain your answer with the help of at least five solid reasons.
*May 3, 2014*

**english**

formal informal
*May 2, 2014*

**english**

which language is used to make comparisons in business communication
*May 2, 2014*

**malay**

Who is your best friend at school? Do you like mathematics?Why? Food what is the most you would prefer? Do you like reading a novel?
*May 1, 2014*

**accounts**

People from all over the world moving from sole proprietorship to partnerships due to the numerous benefits they get. You are required to tell why the focus is shifting from sole proprietorship to partnership? Explain your answer with the help of at least five solid reasons.
*May 1, 2014*

**Finance**

ABC Company is engaged in the manufacturing of electronic equipment. The Company has reported net loss for the year 2013 but its Cash Flow Statement is showing a positive net cash flow. Being a student of Business Finance, you are required to discuss briefly the reasons behind...
*April 28, 2014*

**microeconomics**

Market demand is given as QD = 200 – 3P. Market supply is given as QS = 2P + 100. Each identical firm has MC = 0.5Q and ATC = 0.25Q. What quantity of output will a typical firm produce? a.10 b.20 c.30 d.40
*March 30, 2014*

**math**

How business mathematics can help you in making decision about investment in a business.
*February 17, 2014*

**Nuclear Radiation Technology**

T1/2(Ra-226) = 1602 years What is the activity of 1 gram of Ra-226? Give the answer in Ci and Bq? What would be this activity after 1T1/2 and 5T1/2? Someone please help me with this question.
*February 3, 2014*

**English**

Write a letter to the editor or a speech calling for a change that you would like to see in your community and reference the three works as evidence that non-violence and civil obedience are an effective method for affecting change Using these sources - Civil Obedience On ...
*December 16, 2013*

**english**

use these five words given below and write a essay 120 to 140 words 1.family 2 television 3 entertainment 4 mother 5 day time
*December 10, 2013*

**english**

Read the paragraph below and complete the cause-and-effect chart. Erosion is a natural process. During the erosion process, soil and rocks are worn away by the elements. Most erosion results from a combination of several factors, including heat, cold, gases, water, wind, ...
*December 9, 2013*

**math**

Suppose you are managing an account in which you deposit Rs. 20,000 at the end of each year for 20 years. How much amount you have accumulated with the assumption that you earn 5% interest compounded annually.
*December 7, 2013*

**math**

Ali needs to borrow Rs 500,000 for three years. Which of the following option is more beneficial for him? (i) 3.2 % simple interest rate (ii) 1.6% compound interest rate when it is compounded semi annually
*December 7, 2013*

**science physics**

arthur is riding a horse at a velocity of 4m/s. four seconds after, he is already traveling at a velocity of 12m/s. what is his acceleration
*October 7, 2013*

**chemistry**

In an experiment, 6.700g of hydrogen sulfide is fully decomposed into its elements.If 0.396g of hydrogen is obtained in this experiment, how many grams of sulfur must be obtained?
*July 27, 2013*

**chemistry**

ANSWER n(O2) = 0.225 mol
*July 27, 2013*

**chemistry**

How many moles of O2 are produced when 0.300mol of KO2 reacts in this fashion?
*July 27, 2013*

**chemistry**

Thanks DrBob222 ANSWER 3.1×10−2,3.1×10−2
*July 26, 2013*

**chemistry**

3.1×10−2 Molarity MgSO4. Express your answer numerically using two significant figures.
*July 26, 2013*

**chemistry**

ANSWER ν = 0.160 mol
*July 25, 2013*

**chemistry**

How many moles of HNO3 are present in 34.0 mL of a 4.70 M solution of nitric acid?
*July 25, 2013*

**chemistry**

What is the mass, in grams, of 7.40×1020 molecules of caffeine, C8H10N4O2
*July 24, 2013*

**math**

395
*April 7, 2013*

**Chemistry**

what mass in grams of sodium hydroxide is produced if 20.0g of sodium metal reacts with excess water according ro the chemical equation, Na(s)+H2O4->naoh(aq)+h2(g)
*March 10, 2013*

**physics**

a body moves in a straight line with initial velocity and uniform acceleration.find how far it travels in12s,given that it travel 246m in the 1st 6seconds,and 69m in the last 3seconds.find also the initial velocity.
*February 13, 2013*

**physics**

a body moves in a straight line with initial velocity and uniform acceleration.find how far it travels in12s,given that it travel 246m in the 1st 6seconds,and 69m in the last 3seconds.find also the initial velocity.
*February 13, 2013*

**physics**

thanks alot
*February 13, 2013*

**physics**

a body moves in a straight line with initial velocity and uniform acceleration.find how far it travels in12s,given that it travel 246m in the 1st 6seconds,and 69m in the last 3seconds.find also the initial velocity.
*February 13, 2013*

**physics**

a particle is travelling in a straight line with constant acceleration.it covers 6m in the fourth second and 7m in the fifth second.find its acceleration and initial speed.
*February 13, 2013*

**science**

a particle ia projected upward with a velocity of u m/s and after an interval of t(s) anoda particle is projected upward from the same point and wit the same initial velocity.proof dat they will meet at a height of (4u^2/8g-g^2t^2/8g)
*February 13, 2013*

**science**

thank u very much steve...am grateful
*February 13, 2013*

**science**

a particle is projected vertically upward with the velocity u m/s and after t(s) another particle is projected upwards from the same point and with the same initial velocity. proof that the particle will meet after a lapes of (u/g + t/2)seconds from the instance of the first ...
*February 13, 2013*

**science**

a particle moving in a straight line with constant acceleration passing over distances x,y,z in equal consecutive interval of time(t).find the relation between x,y and z..and the acceleration of the body.
*February 13, 2013*

**chemistry**

A scientist is performing an experiment on a powder. Which of the following is a sign that a chemical change has definitely occurred during his experiment? The powder catches on fire. The powder releases bubbles. The powder heats up. The powder breaks apart into smaller ...
*February 7, 2013*

**chemistry**

Energy must be removed because particles in liquid move more slowly. Energy must be added because particles in liquid move more quickly. Energy is neither added nor removed in this phase transition. Energy is either removed or added, depending on the type of particles
*February 7, 2013*

**chemistry**

Which best describes the transition from gas to liquid?
*February 7, 2013*

**math6**

shaunti drove 621miles in 11.5 hours.wht was her average speed in miles per hour?
*February 4, 2013*

**4th grade math**

36/2=18
*January 30, 2013*

**math**

y= 2sin(2x-pi/4) find amplitude, period, phase shift, assymptote and graph
*October 26, 2012*

**Linear algebra**

Show that the origin is the only equilibrium point of the system? X=ax+by Y=cx+dy Wherea,b,c and d are constants, with ad-bc not aqual to 0(zero) Please show me how to do this problem Please show me the work
*October 11, 2012*

**Precalculus**

give an example of two decreasing functions whose product is increasing
*September 28, 2012*

**Math**

1. What is a ratio? a. What is the difference between a ratio and a fraction? b. What are the similarities between ratios and fractions? c. Remember that order is important! d. How do you simplify ratios?
*September 26, 2012*

**precalculus check immediately**

suppoe f is a function with domain [1,3]and range[2,5]? define functions g and h by g(x)=3f(x)and h(x)=f(4x) what is domain and range of g what is domain and range of h I solved it and got it like this domainof g=[1,3]and range of g=[3,9] Domain of h=[4,12] and range of h=[2,5...
*September 24, 2012*

**precalculus**

suppose the only information you know about a function f is that the domain of f? is the set of real numbers and that f f(1)=1,f(2)=4,f(3)=9,f(4)=16what can you say about the value of ,f(5). Hint the answer to this problem is not 25 the shortest correct answer is just one word
*September 23, 2012*

**precalculus**

Suppose f is an even function and g is an odd function such that the composition fog is defined.d show that fog is an even function
*September 23, 2012*

**precalculus**

Suppose g is an even function and f is any function such that the composition fog is defined. show that fog is an even function
*September 23, 2012*

**Precalculus plese check urgent**

Give an example of a function whose domain is{3,4,7,9} and? whose range is {-1,0,3} plese give me the trick of finding such functions Is this answer coreect the function must only consist of individual points: {(3, -1), (4, 0), (7, 3), (9, 0)} is an example.
*September 23, 2012*

**Pre calculus**

Precalculus-------Give an example of three functions f,g,h none of which is a constant function such that? Precalculus-------Give an example of three functions f,g,h none of which is a constant function such that? foh=goh but f is not equal to g I tried with many functions but...
*September 23, 2012*

**precalculus**

Precalculus-------Give an example of three functions f,g,h none of which is a constant function such that? fog=foh but g is not equal to h. I tried with many functions but not getting like f=x g=1+x then h=?or any other example so that we get fog=foh
*September 23, 2012*

**Pre calculus**

give an example of two decreasing functions whose product is increasing
*September 23, 2012*

**Precalculus**

Give an example of an increasing function whose domain is the interval [0,1]but whose range does not equal the interval[f(0),f(1)] please show me the work
*September 23, 2012*

**calculus**

Help with an integration question with the substitution given? Please help, i tried to to answer it but the working is too complicated can anyone help out there, the question says: Using substitution 5x=4cosØ to show ∫ √ (16-25x^2) dx = 4 π + 6√ 3...
*September 22, 2012*

**precalculus**

show that the composition of two increasing functions is increasing
*September 22, 2012*

**precalculus**

give an example of two increasing functions whose product is not increasing
*September 22, 2012*

**precalculus**

show that the sum of two increasing functions is increasing
*September 22, 2012*

**Maths(please check urgently**

Please check urgently .I have to submit the assignment A give an example of a function whose domain equals the set of real numbers and whose range equals the set? the set {-1,0,1} BGive an example of a function whose domain equals (0,1)and whose range equals [0,1] C.Give n ...
*September 18, 2012*

**11th grade mths**

Please check urgently .I have to submit the assignment A give an example of a function whose domain equals the set of real numbers and whose range equals the set? the set {-1,0,1} BGive an example of a function whose domain equals (0,1)and whose range equals [0,1] C.Give n ...
*September 18, 2012*

**Maths**

A give an example of a function whose domain equals the set of real numbers and whose range equals the set? the set {-1,0,1} BGive an example of a function whose domain equals (0,1)and whose range equals [0,1] C.Give n example of a function whose is the set of positive ...
*September 17, 2012*

** 11th grade maths**

A.give an example of a function whose domain is {3,4,7,9}? and whose range is {-1,0,3} B.Find two different functions whose domain is {3,8}and whose range is {-4,1} C Explain why there does not exist a function whose domain is {-1,0,3} and whose range is [3,4,7,9} D.Give an ...
*September 17, 2012*

**maths**

Give an example of a function whose domain is {2,5,7} and whose range is {-1,0,3}?
*September 16, 2012*

**Biology**

Produce a self portrait showing you carrying out the characteristics of life. Could you explain what exactly is expected of me.
*September 4, 2012*

**algebra**

Please help me anybody Abby Garland is parked at a mile marker on an east -west country road.She decides to toss a fair coin 10 times ,each time driving 1 mile east if it lands heads up and 1 mile west if it lands up tails up. The term random walk applies to this process even ...
*August 22, 2012*

**Math**

The owner of a large company is conducting a survey about job satisfaction, including questions about salary, hours, stress, and other conditions. There are about 800 employees in the company, including 100 executive positions, 650 middle-management positions, and 50 custodial...
*August 7, 2012*

**Math**

The owner of a large company is conducting a survey about job satisfaction, including questions about salary, hours, stress, and other conditions. There are about 800 employees in the company, including 100 executive positions, 650 middle-management positions, and 50 custodial...
*August 7, 2012*

**Math**

Shelly delivers the weekly local paper to neighborhoods in her town. House numbers are even on one side of the street and odd on the other. Shelly delivers an equal number of papers to both sides of the street. Although she always aims for the front doorstep, Shelly typically ...
*August 7, 2012*

**Science**

Describe 2 structures of a plant that help it survive living on the land.
*August 7, 2012*

**chemistry**

If one mole of hydrocarbon contain 4g of hydrogen and it molar mass is 40g.what is the homologous series of the compound
*July 5, 2012*

**4th std**

how can we help survive tigers?
*June 24, 2012*

**DBQ Essay mesopotamia and egypt**

i don't now how to do it
*May 31, 2012*

**math 3rd grade**

18 ft wide
*May 1, 2012*

**Physics**

# means micro
*March 10, 2012*

**Physics**

A long cylindrical insulator has a uniform charge density of 1.0 #C/m3 and a radius of 9.0 cm. a) What is the electric field inside the insulator at a distance of 4 cm? b) What is the electric field at 17 cm? c) How much work must you do to bring a q = 0.05 #C test charge from...
*March 10, 2012*

**Mathematics**

A motorist do does the first part of his journey at an average speed of 54km/h. Then he increases the speed to 60km/h for the rest of the journey. If he travels 225km in 4 hours, what is the distance traveled for the rest of his journey? show clear steps.
*March 7, 2012*

**english**

Hi could you please check for me grammar and did i explain this paragraph correct or not ?? thank you Three years ago, I went to Turkey with my family and friends . It was unforgettable country,including the beauty , civilization ,nice weather and beautiful nature. Turkey had ...
*March 2, 2012*

**english**

ok , i am going to write and i will send it to you to correct it for me is that good
*March 2, 2012*

**english**

With write for me a simple paragraph about turkey
*March 2, 2012*

**english **

Write a paragraph about the country you chose to present. The paragraph should have an introduction and conclusion and explain why you chose the country, what you found most interesting, information that surprised you and any other relevant information/your opinion. my country...
*March 2, 2012*

**Math**

shandi
*February 29, 2012*

**math/algebra**

three fourths = seven tenths = two thirds = eleven twentieths = five eights = twenty one twenty five =
*February 29, 2012*

**homonyms**

what is the homonym 4 urn
*February 29, 2012*

**4th grade**

12
*February 28, 2012*

**physics**

A 95 g tennis ball is traveling at 106 km/h when it bounces of a wall and travels in the opposite direction it came from at a speed of 88 km/h. a. Determine the impulse on the ball if the. (don’t forget that it is a vector) b. If the average force exerted on the ball by ...
*January 22, 2012*

**physics**

A 95 g tennis ball is traveling at 106 km/h when it bounces of a wall and travels in the opposite direction it came from at a speed of 88 km/h. a. Determine the impulse on the ball if the. (don’t forget that it is a vector) b. If the average force exerted on the ball by ...
*January 22, 2012*

**Physics**

can you explain more
*October 8, 2011*

**Physics**

a 2.5kg block initially at rest on horizontal surface. A horizontal force F of magnitude 6N and a vertical force P are the applied to the block. The coefficients of friction for the block and surface are Ms=0.4 and Mk=0.25.Determine the magnitude of the frictional force acting...
*October 8, 2011*

**maths**

If E the universal set contains all rectangles of length x and breadth y, where x and y are integers and x>y. A contains rectangles with area of 24m2 B contains rectangles , each with length multiples of 3 and area of 24m2. Find n(A), n(B), and n(A ^B)
*July 8, 2011*