Monday

November 30, 2015
Total # Posts: 1,441

**chemistry**

HCOOH(aq) <-----> H^+ (aq)+ HCOO^-(aq) The equilibrium constant (Ka) for Reaction 3 at 25 °C is 1.80 × 10−4 mol dm−3. Calculate the equilibrium concentration of hydrogen ions if the concentration of formic acid at equilibrium is 0.00500 mol dm−3
*February 10, 2013*

**science**

Oh yeah! Those values apply to this equation: HCOOH(aq) <-----> H^+ (aq)+ HCOO^-(aq)
*February 10, 2013*

**science**

The equilibrium constant (Ka) for Reaction 3 at 25 °C is 1.80 × 10−4 mol dm−3. Calculate the equilibrium concentration of hydrogen ions if the concentration of formic acid at equilibrium is 0.00500 mol dm−3. (Show all of your working and give your ...
*February 10, 2013*

**Math grade 8 (algebra)**

The perimeter of the square is 2cm longer than the perimeter of the triangle.Write an equation for the perimeter of the square and then determine the length of each side of the square. Thank you in advance.
*February 7, 2013*

**Math**

Red beads = 16 Yellow beads = 16-8 = 8 Green beads = 16 +7 = 23 16 red, 8 yellow, 23 green is 16+8+23 = 47 total beads
*February 5, 2013*

**English **

choosing a conjunction and the relationship it expresses: ------you buy a rare manuscript, make certain of its authenticity. I used "Before" but it would be "time" or Should I use "If" and it would be "condition" This is so confusing!!!
*January 29, 2013*

**Chemistry**

I'm asked to tell which of the following peptide segments is most likely to be part of a stable Alpha Helix at physiological pH? Only 1 can be chosen 1. gly-gly-gly-ala-gly 2. gly-arg-lys-his-gly 3. pro-leu-thr-pro-trp 4. lys-lys-ala-arg-ser 5. glu-leu-ala-lys-phe 6. glu-...
*January 27, 2013*

**Chemistry**

You have 475 mL of an 0.47 M acetic acid solution. What volume (V) of 1.10 M NaOH solution must you add in order to prepare an acetate buffer of pH = 5.00?
*January 19, 2013*

**finance**

1. The U.S. ﬁnancial system is composed of: (1) policy makers, (2) a monetary system, (3) ﬁnancial institutions, and (4) ﬁnancial markets. Indicate which of these components is associated with each of the following roles: a. accumulate and lend/invest ...
*January 19, 2013*

**finance**

ATM Banc has the following liabilities and equity categories: Deposits $9 million, Other liabilities $4 million, Owners’ capital $2 million. . a. What would be the bank’s total liabilities and capital if owners’ capital were half the size of other liabilities? b...
*January 19, 2013*

**arithmetic**

change 12/23 into a decimal to the nearest hundreth's
*January 16, 2013*

**statistics**

did you get an answer?
*January 15, 2013*

**statistics**

these numbers are wrong. did you change the numbers??? where are you getting this data???
*January 14, 2013*

**math**

which digits are in the ones place of a number multiplied by 5? a.0 or 1 b.0 or 5 c.2 or 4 d.2 or 5 Is it b????
*January 14, 2013*

**math**

which digits are in the ones place of a number multiplied by 5? a.0 or 1 b.0 or 5 c.2 or 4 d.2 or 5 Is it b????
*January 14, 2013*

**help please**

was this correct??
*January 10, 2013*

**help please**

many children have more than one figure towards whom they direct attachment behavior. These figures are not treated alike but there is a strong bias for a child to direct attachment behavior mainly towards one particular person. Bowlby used the term "monotropy" to ...
*January 10, 2013*

**help please**

what does reseach show about the child;s relationship with the primary parental figure when the child has additional attachments to other people?
*January 10, 2013*

**English-Native speakers**

Thank you ;)
*January 8, 2013*

**English-Native speakers**

Can someone please make this sentence more "English"? THE ROLE OF ILLUSTRATIONS IN CHILDREN'S BOOKS WRITTEN BY GERMAN WRITERS AND RELEASED AFTER 1950. This is supposed to be the title
*January 8, 2013*

**Ms. Sue (History)**

Thanks
*December 20, 2012*

**Ms. Sue (History)**

The Europeans raised their own tariff which caused a trade protection war. The American merchants had enormous surpluses and no market to sell their goods. This would cause a fall in prices and industrial instability. Am I on the right track?
*December 20, 2012*

**History **

Why was the Fordney-McCumber Tariff of 1922 a BAD thing for the U.S. Economy? There seems to so many and I would like to know the most important ones.
*December 20, 2012*

**math**

draw the shape of an ice-cream cone wrapper when it is slit from the edge to the center point and flattened out
*December 14, 2012*

**Math**

Find the positive number such that 1/2 of the number multiplied by 1/3 of the number, multiplied by 1/6 of the number is equal to the number itself.
*December 12, 2012*

**English **

I need to correct the verb in this sentence. If we would have had the engine tuned, I'm sure we would not be stranded on the highway now. Is this correct? If we had had the engine tuned, I'm sure we would not be stranded on the highway now.
*December 11, 2012*

**Algebra**

Can you explain how you got those answers, Raj? Thank You!
*December 5, 2012*

**Algebra**

-Alfonso can write 100 practice problems for the math team in 20 hours, Beauregard can write the same number of problems in 30 hours, and Clyde can write the number of problems in 40 hours. Working together, at what time will the three of them finish writing 100 practice ...
*December 5, 2012*

**Chemistry**

7.40 g of liquid methanol, CH3OH, are placed in an empty 20.0 L container at 45.0°C. What will be the pressure in the container when equilibrium is established? Assume the temperature remains constant and the volume of any liquid is negligible. The vapor pressure of ...
*December 4, 2012*

**math**

how many gallons would a hole 100ft deep by 6ft wide hold
*December 3, 2012*

**English **

Thank you very much, Ms. Sue
*November 28, 2012*

**English **

"Understanding the cause for Bartleby's reason to be an introvert and to offer polite refusals when asked to do something would suggest he deserves either sympathy or disdain." I need to reword the whole thesis using different words but meaning the same thing. I ...
*November 28, 2012*

**English **

"Understanding the cause for Bartleby's reason to be an introvert and to offer polite refusals when asked to do something would suggest he deserves either sympathy or disdain." Thank You Ms. Sue, That was my thesis for a paper and I need to reword it, could you ...
*November 28, 2012*

**English **

Could you help me rephrase this sentence? "Understanding the cause for Bartleby's reason to be non-social introvert and to offer polite refusals when asked to do something would suggest whether he deserves sympathy or disdain."
*November 28, 2012*

**English **

Could you help me rephrase this sentence? "Understanding the cause for Bartleby's reason to be non-social introvert and to offer polite refusals when asked to do something would suggest whether he deserves sympathy or disdain."
*November 28, 2012*

**history**

Do you think that the Korean War was merely a civil war in which the United States supported one side, or should it be considered an international war in which the United States used the United Nations to further its anticommunist policies?
*November 28, 2012*

**English-Native speakers**

I can't use that. It is paraphrasing :/ I'll leave it that way "than if they were conducted today"
*November 28, 2012*

**English-Native speakers**

Need help with one sentence structure. I don't know if I am going to be able to explain it good. It goes like this "the measures will have to be much more drastic than if they were conducted today" I need help with this part "than if they were conducted ...
*November 28, 2012*

**math**

4 different ways
*November 27, 2012*

**Physics**

A cubical object of sides 5 cm is immersed completely in water. What is the force of buoyancy on the object? (Assume g = 10 m/s2)
*November 27, 2012*

**science grade 8**

Please, help. I need to create a comic that illustrates and explains what life would be like without 2 organ systems: muscular and digestive. I have an idea for digestive (you can live without gallbladder). I need to explain what is happening inside and outside the body, and ...
*November 22, 2012*

**psychological statistics**

Create a sample frequency distribution for one of the variables. Choose either a simple or grouped frequency distribution and explain your choice
*November 19, 2012*

**Physics**

An 80 kg man climbs a 50 m-high hill in 20 minutes. What is the average power in watts he expends climbing the hill?
*November 19, 2012*

**Physics**

An 80 kg man climbs a 50 m-high hill in 20 minutes. What is the average power in watts he expends climbing the hill?
*November 18, 2012*

**math**

A mother wnats to invest $6,000 for her son's future education. She invests a portion of the money in a bank certificate of deposit which earns 4% and the remaainder is a savings bond that earns 7%. If the total interest earned after one year is $360.00, how much money was...
*November 17, 2012*

**English**

Hello! Any interesting ideas on how to present new vocabulary? The topic is smoking. Some of the words are:addicted,to promise,to give up and so on. There are 10 unknown words. What to do? :/ There are 22 students (17 years old) and they are learning English for only 3 years
*November 17, 2012*

**Physics**

A circular disk of radius 30 cm is rotating with an angular velocity of 2 radians / s. What is the tangential velocity of a point on the rim of the disk? What is its centripetal acceleration?
*November 17, 2012*

**Physics**

A 980 kg car traveling at 20 m/s rounds a curve of radius 40 m. What is the friction force that must act on the car to keep it in its circular path?
*November 16, 2012*

**English**

Hello! How to present smoking as a topic to students? There are 22 students (17 year olds) and they are learning English for 3 years.So any kind of discussion has to be excluded. I would really like to come up with something interesting! At the end of the lesson I am going to ...
*November 16, 2012*

**Physics**

A 3 kg ball is traveling in a circle of radius 2 meters with a tangential velocity of 2 meters/second. Find the centripetal acceleration of the ball and the centripetal force acting on it.
*November 14, 2012*

**math problem**

--There is a layer of ice four inches thick covering a small pond when the weather arrives and it begins to smelt. It smelts 1/16 inch the first day, 1/8 inch the second day. 1/4 inch the third day, and keeps doubling the amount melted each succeeding day. all the ice will be ...
*November 11, 2012*

**Physics**

A 500 kg cannon rests on wheels that are free to roll. The cannon fires a 2 kg cannon ball horizontally with an average force of 400 N. What is the acceleration of the cannon ball? What is the recoil acceleration of the cannon
*November 9, 2012*

**Geometry**

BC has endpoints B(5,9) and C(-4,-3). Find the coordinates of the midpoint of BC.
*November 6, 2012*

**Psychology**

Why did early Psychologists NOT focus on "the mind" it was too complex it was genetically determined it was largely unconscious it was unobservable it was environmentally determined
*November 5, 2012*

**Psychology**

In order to treat a specific phobia, this therapy would be best Antidepressant drugs Systematic desensitization Implosion therapy Psychoanalysis Aversion therapy
*November 5, 2012*

**English **

We express our love for each other by exchanging gifts. (for each other) Is that a prepositional phrase? What is (by exchanging gifts)
*November 1, 2012*

**Math**

Malia runs twice as fast as Eileen. If Malia and Eileen start from the same point and run around a circular track in opposite directions, how many times will they pass each other if they stop when Malia completes her sixth lap? I figured 5 times. Is that correct?
*October 23, 2012*

**Math**

Malia runs twice as fast as Eileen. If Malia and Eileen start from the same point and run around a circular track in opposite directions, how many times will they pass each other if they stop when Malia completes her sixth lap? I figured 5 times. Is that correct?
*October 23, 2012*

**Math**

Malia runs twice as fast as Eileen. If Malia and Eileen start from the same point and run around a circular track in opposite directions, how many times will they pass each other if they stop when Malia completes her sixth lap? I figured 9 times. Is that correct?
*October 23, 2012*

**math**

Malia runs twice as fast as Eileen. If Malia and Eileen start from the same point and run around a circular track in opposite directions, how many times will they pass each other if they stop when Malia completes her sixth lap? I figured 9 times. Is that correct?
*October 23, 2012*

**Math **

Need Help!! Find the measure of the small angle between the hands of a clock at 8:16 a.m. I keep getting different answers
*October 23, 2012*

**math**

reduce 16/180 to lowest terms
*October 16, 2012*

**maths**

find volume and curved surface area of a cone of radius 6.00cm and perpendicular height 8.00cm
*October 16, 2012*

**chemistry**

the level of water in a graduated cylinder is 52.7 ml. After a solid object weighing 100 g is added, the level is 87.4 ml. What is the density of this object?
*October 14, 2012*

**Econ**

I have spent a few hours on this question. Can anyone help? The demand for Healthy Wheat Cookies is downward sloping, while the supply is upward sloping. Healthy Wheat Cookies are a normal good produced mainly from wheat and sugar. The government recently put a price floor on ...
*October 13, 2012*

**English **

Seals balance balls on their noses on command. Is command the object of the prep. on
*October 10, 2012*

**Physics**

A freight train has a mass of 1.5*10^7 kg. If the locomotive can exert constant pull of 4.5 *10^5N, how long does it take to increase the speed of the train from res to 80.0km/hr? a)467s b) 444s c)527s d) 425s e) 496s
*October 9, 2012*

**Math**

4)7(:!$4!4$3' wniqnejduenepehurjrnirjeoqlgw5,🙁😯😪😢😓😷💩💩💩💩💩💩💩💩💩💩👺👹👹🤕😵😢😫😕🙁&#...
*October 8, 2012*

**Physics**

A typical laboratory centrifuge rotates at 4100 rpm. Test tubes have to be placed into a centrifuge very carefully because of the very large accelerations. (a) What is the acceleration at the end of a test tube that is 11 cm from the axis of rotation? dropped from a height of ...
*October 7, 2012*

**Chemistry**

When investigating heat of solution of NaoH& NH4No3, what is the heat of solution of the two cpds?
*October 6, 2012*

**English **

There is a control on the television set for making the picture a little less brighter. Is the sentence correct or is it a little less bright
*October 4, 2012*

**English **

We found it hard to understand why Randy had spoken as rude as he did in response to a simple question. is rude correct or is it rudely and why
*October 4, 2012*

**Eglish**

Thanks Ms. Sue
*October 2, 2012*

**English **

Why is she walking so slow toward the house? Is that correct or should it be (so slowly} They both sound correct
*October 2, 2012*

**English **

Dividing the pie into, Felicia took the least and gave me the larger portion. Is least correct or should it be lesser? It doesn"t sound right with lesser.
*October 2, 2012*

**Math **

Two sides of a triangle measure 14 and 10. If A is the set of possible lengths for the third side, how many elements of A are integers? Is the correct answer 19 elements of A are integers?
*October 1, 2012*

**Math **

Two sides of a triangle measure 14 and 10. If A is the set of possible lengths for the third side, how many elements of A are integers? Is the correct answer 19 elements of A are integers?
*October 1, 2012*

**chemistry**

how much E is used to heat 500g of iron from 22c to 55c? Cfe=0.451 Jg-1C-1.
*October 1, 2012*

**Physics**

v^2=2W/(m1+m2)
*September 30, 2012*

**Math**

3. $34,600
*September 30, 2012*

**English **

Thank You, Ms. Sue I understand it better now
*September 29, 2012*

**English **

Limburg cheese smells very (bad, badly). Is the correct answer bad because it modifies cheese? "The leading lady in the play," she said, "is feelin (sick, sickly)." Is the correct anwer sickly because it modifies is feeling?
*September 29, 2012*

**English **

"She is resting ( comfortable, comfortably) backstage." Is the correct answer comfortably even if it follows the linking verb is
*September 29, 2012*

**French**

Thank you SraJMcGin. Your explanations are very helpful.
*September 29, 2012*

**French**

Are my answers correct? 1 Elle voit le film au cinéma. Elle _____ voit. le-my choice lui pour me 2 Nous parlons souvent à nos professeurs. Nous _____ parlons souvent. les leur-my choice y en 3 Elle va en Chine. Elle ____ va pour étudier la culture. lui y-...
*September 29, 2012*

**physics**

Let the radius of the circular segment be 92 m, the mass of the car 2393 kg, and the coefficient of the static friction between the road and the tire 0.9. Find the magnitude of the normal force N which the road exerts on the car at the opti- mal speed (the speed at which the ...
*September 29, 2012*

**Math**

Factor. y ^3 + 729
*September 28, 2012*

**Math HELPPPP**

(a) Which of the following are examples of the expression "difference of two cubes"? (Select all that apply.) (y2 - 9)3 3 - 4y 64 - y3 (y - 1)3 y3 - 27 27 - 3y y3 (b) Which of the following are examples of the expression "cube of a difference"? (Select all ...
*September 28, 2012*

**Math**

Before a football game, a coin toss is used to determine which team will kick off. The height h (in feet) of a coin above the ground t seconds after being flipped up into the air is given by the following equation. h = -16t2 + 34t + 15. How long does a team captain have to ...
*September 28, 2012*

**Math**

At the peak of a roller coaster ride, a rider's sunglasses fly off his head. The height h (in feet) of the glasses, t seconds after he loses them, is given by h = -16t2 + 16t + 1152. After how many seconds will the glasses hit the ground?
*September 28, 2012*

**Math**

The inclined ramp of the boat launch is 18 meters longer than the rise of the ramp. The run is 17 meters longer than the rise. How long are the three sides of the ramp?
*September 28, 2012*

**physics**

.A 5.5kg riffle fires an 11gram bullet with a velocity of 1000m/s. a. find the velocity of a riffle? b. if the shooter holds the riffle firmly with his shoulder what will be the velocity assume the mass of shooter is 120kg?
*September 28, 2012*

**Senior Microeconomics**

I need some help with my econ homework. Can someone tell me if I am right on these? 1. When graphing cross-sectional data, one should ________. A. place the various years on the X-axis B.always be drawn using a line chart C. investigate variables in a single time period D. ...
*September 27, 2012*

**marketing**

Binomial probability distributions are used in business, science, engineering, and other fields. Suppose you work for a marketing agency and have to create a television ad for Brand A toothpaste. The toothpaste manufacturer claims that 40% of the toothpaste buyers prefer Brand...
*September 27, 2012*

**business**

Previous billing method
*September 26, 2012*

**algebra II**

Choose the equation in slope-intercept form for the line passing through each pair of points. (-4, -2) and (2, 3) y=-5/6x+14/3, or y=5/6x+4/3
*September 25, 2012*

**math**

i have 0.953 and need to round it off round two decimal places. Would this be consider 0.9
*September 25, 2012*

**Math **

What is the area of a square with the same perimeter as a regular hexagon with area 24 square root of 3. Can you please help me wodrk this?
*September 19, 2012*

**Math**

solve the ivp dy/dx = 1/(sqrt(1-x^2)) with initial condition y(sqrt(3)/2)=0
*September 19, 2012*

**physics**

A top fuel dragster covers the quarter mile in 4.5 seconds. what is its speed in miles per hour? please tell me step by step what to do.
*September 18, 2012*