Friday

August 29, 2014

August 29, 2014

Total # Posts: 1,047

**Chemistry**

The piperazine content of an impure commercial material can be determined by precipitating and weighing the diacetate: (C2H4)2N2H2 + 2 CH3COOH → (C2H4)2N2H2(CH3COOH)2 In one experiment, 0.3126 gram of the sample was dissolved in 25 mL of acetone, and 1 mL of acetic acid...
*August 23, 2014*

**Chemistry**

A 8.5 L sample is collected at 45 degrees C. What will the volume be if the temperature is raised to 70 degrees C.
*August 19, 2014*

**Resume Writing**

How would I say that using a resume word?
*July 14, 2014*

**Resume Writing**

Hello. I am creating a resume. Under one of my bullet points, I want to say that I write inspirational blogs. How would I say that in the resume way?
*July 14, 2014*

**Math**

Thank you so much Ms.Sue! :D
*July 11, 2014*

**Math**

what is the sum of a profit 0f $8000 and a loss of $13000? I'm realy struggling and need URGENT Help! plz respond
*July 11, 2014*

**Chemistry**

A 56 g sample of peanut oil has a volume of 60.9 cm^3. Calculate the density of the peanut oil.
*July 8, 2014*

**Algebra**

Solve equation. -6e^8n+8 -3=-23
*July 5, 2014*

**physics**

A sound wave of frequency 1310 Hz., propagating through air at 0 degrees Celsius, has a pressure amplitude of 11.0 Pa. What is the maximum particle speed (in meters/second)?
*June 25, 2014*

**pharmacy**

the structural formula of a drug is included in this section of a drug monograph
*June 23, 2014*

**english**

I expect a friend to both honest and a loyal pereson
*June 17, 2014*

**english**

I want to either study or to work abroad after I graduate.
*June 17, 2014*

**Physics**

Explanation of twin paradox in regards to special relativity theory.
*June 7, 2014*

**math**

Suppose that inflation is 3% per year. This means that the cost of an item increases by 3% each year. Suppose a jacket cost $150 in 2011. How long will it take for the jacket to cost $300 dollars?
*June 4, 2014*

**math 1 question!!!!!!**

No its 14/27. Multiply 2/3 and 7/9.
*June 3, 2014*

**math**

I put both systems of equations into the y=mx+b format.
*June 3, 2014*

**math**

yes thank you!!!!!!!
*June 3, 2014*

**math**

x – 3y = 25 x – 2y = 21 find the x and y values i think x=-13 and y=4 am i right?
*June 3, 2014*

**algebra 2**

In how many ways can 6 toy animals be arranged in a line on a shelf if one of the toys is a tortoise and it must be at the end of the line?
*June 2, 2014*

**Physics **

A pendulum consists of a swinging mass hanging from a massless string. The hanging mass is 2.0 kg and the string is 400.0 cm long. If the mass has a speed of 8.0 m/s when it passes the lowest point of its swing, a) what is the speed when the string makes an angle of 60.0o with...
*May 30, 2014*

**Calculus**

Let t be some ﬁxed real number. Find the volume of the region bounded by y =1/x and the y = 0 on the interval [1, t] rotated about the x-axis. What happens as t → ∞?
*May 27, 2014*

**Chemistry **

A student places a zinc electrode in a 0.80 M Zn2+(aq) solution which is connected by an electrolyte to a 1.30 M Ag+ (aq) solution containing a silver electrode. (Note that the solution concentrations are not standard). Determine the initial voltage of the cell at 298 K. Show ...
*May 13, 2014*

**Physics **

A box of mass 1.50 kg is given an initial velocity of 12.5 m/s up an inclined ramp that makes an angle of 25.0o with the ground, which is horizontal. The coefficient of kinetic friction between the box and the ramp is 0.240. How long does the box slide up the ramp before it ...
*May 13, 2014*

**Physics **

A block is sitting on a rough ramp. It is found that a force of F = 200.0 N (directed up the ramp) is required to keep the box from sliding back down the ramp. The angle 𝜃 is 35.0o and the mass of the box is 150.0 kg. What is the coefficient of static friction between...
*May 13, 2014*

**algebra**

solve the system of equation 2x+y=5 y^2-2y=-3x+5
*May 6, 2014*

**algebra**

solve each system of equations 1.4x-0.5y=1.3 0.4x+1.1y=4.1
*May 5, 2014*

**algebra**

assuming the distance between points (2,-3) and (-1,y) is 5 units, find y. how do you set this up?
*May 5, 2014*

**English/Mythology**

that is what I wanted to know the "meaning"
*May 4, 2014*

**English/Mythology**

What is a ritualistic interpretation of the story of Theseus
*May 4, 2014*

**English/Mythology**

What is ironic about the death of Jason and Theseus from Greek mythology
*May 4, 2014*

**Math**

The temperature of an object in a experiment is T(t) = 60(1/3)^t + 10, where T is the temperature in degrees C and t is time in seconds. What is the domain and range of this situation?
*May 4, 2014*

**english**

why am i black? please explain that to me.
*May 3, 2014*

**health sciences**

Explain the changes that occur in the DNA of muscle fibers during exercise?
*April 25, 2014*

**science**

how strenuous should the exercise be in order to metabolize sugar and fat in the body?
*April 24, 2014*

**Thank You**

Thank you sooo much Writeacher
*April 24, 2014*

**Language Check**

are the rest of them correct? besides 8 and 10
*April 24, 2014*

**Language Check**

1.has 2.are 3.show 4.were 5.play 6.is 7.use 8.requires 9.enjoy 10.turn Hope im right
*April 24, 2014*

**Language Check**

Choosing verbs that agree in Number with Their Subjects: 1. Almost everybody (has,have) played games that originated in faraway places. MY ANSWER: HAVE 2. Few of these games (is,are) difficult to play. MY ANSWER: ARE 3. Pictures on ancient Greek pottery (show,shows) people ...
*April 24, 2014*

**Question**

how would you get 3. if the answer was 2/3
*April 24, 2014*

**Language HELP **

Proofreading a Parapgraph for Subject-Verb Agreement, Help with the errors: 1.Oridnary houses or a public building sometimes present problems for people with disabilities. 2. For example, a person using a wheelchair or crutches often have difficulty maneuvering in narrow halls...
*April 24, 2014*

**criminal justice**

the study of moral standards and how they affect conduct
*April 19, 2014*

**criminal justice**

I am still confused on what they have in common.
*April 19, 2014*

**criminal justice**

how are Ethical Egoism and Virtue Ethics the same and what are the contradictory elements between the two systems
*April 19, 2014*

**calculus help**

Does the function satisfy the hypotheses of the Mean Value Theorem on the given interval? f(x)= ln(x) , [1,6] If it satisfies the hypotheses, find all numbers c that satisfy the conclusion of the Mean Value Theorem. (Enter your answers as a comma-separated list. If it does not...
*April 16, 2014*

**college Algebra**

A rectangular fence is to be built along a river using the river as one side of the fence.the cost of the fencing for the two ends is $8 per sq ft and the cost of the fencing for the side running parallel to the river is $12 per sq ft. If you have $3600 to spend on purchasing ...
*April 15, 2014*

**math**

Water flows through a pipe with the inner diameter of 20cm at a speed of 1m/s. How long does it take for the water flowing out from the pipe to fill a cylindrical tank with the base radius of 0.8m and the height of 0.5m?
*April 14, 2014*

**Math**

Alex's favorite restaurant is a buffet-style Chinese restaurant downtown. Each time he goes, he chooses 2 appetizers and 1 entree. If the restaurant has four appetizers and 5 entrees to choose from, how many, times could Alex go to the restaurant without choosing the same ...
*April 6, 2014*

**Math**

Dominic drove 324 miles from Salt Lake City,Utah, to Bryce Canyon National Park in 6 hours and 34 minutes. What was his average speed, in miles per hour?
*March 26, 2014*

**PHYSICS**

Scientists are experimenting with a kind of gun that may eventually be used to fire payloads directly into orbit. In one test, this gun accelerates a 8.9-kg projectile from rest to a speed of 4.2 × 103 m/s. The net force accelerating the projectile is 1.4 × 105 N. ...
*March 16, 2014*

**english**

Lots of my friends think that prince's music is old. But I think it's not only excellent but also on innovation.
*March 12, 2014*

**Math**

If each voter voted for only one candidate what is the fewest number of voters who would have to vote differently in order for Susan to have received more votes than James if Susan had 212 votes and James had 244 votes?
*March 11, 2014*

**Math**

Thank you
*March 8, 2014*

**Math**

Given that f(x) = 2x2 – 3, find f(2)
*March 8, 2014*

**Physics**

a horizontal force of magnitude 20.0 N is applied to a 3.05 kg book as the book slides a distance d = 0.87 m up a frictionless ramp at angle θ = 30°. The book begins with zero kinetic energy. What is its speed at the end of the displacement?
*March 2, 2014*

**physics**

A person in a kayak starts paddling, and it accelerates from 0 to 0.59 m/s in a distance of 0.43 m. If the combined mass of the person and the kayak is 72 kg, what is the magnitude of the net force acting on the kayak?
*February 19, 2014*

**Chem Help :(**

What is the pH of a solution in which [H3O^+] = 6.8 x 10^-5 M? What is the pH of a solution in which [OH^-] = 2.5 x 10^-9 M?
*February 17, 2014*

**Math**

If I paid $1000 for a corporate bond and this year the bond paid $60 in interest and I am in the 25% income tax bracket! what is my after-tax return on this bond
*February 10, 2014*

**optimisation**

Determine the maximum area of a piece of land comprising a semi-circle adjacent to a rectangle that can be enclosed by 850 metres of fencing.
*February 7, 2014*

**Physics**

On a curved roadway of radius 100 m, the suggested speed limit is 35 mph (approximately 16 m/s). What must the coefficient of friction be between a car’s tires and the road for the car to safely negotiate the curve at the posted speed?
*January 30, 2014*

**Math**

Jerrod's bike has a tire diameter of 26 inches. How far will the bike travel in 100 rotations of its tires?
*January 29, 2014*

**Chemistry**

1)Not sure 2) Increase in proton number, strong ENC forces. Increase dentsity and bonding. hence increased boiling point 3) Fe electronic configuration is [Ar] 3d6 4s2 Fe3+ is 3d5. All shells are full for Fe, Fe3+ isnt
*January 22, 2014*

**biology**

draw a diagram that shows the chromosome combinations that are possible in the haploid gametes of an organism with a diploid number of 6
*January 15, 2014*

**Math**

Sorry it is 5 blue 4 red 9 white 6 green
*January 14, 2014*

**Math**

A bag contains 5 blue, 4 red, 9 white, and 6 white marbles. If a marble is drawn at random and replaced 100 times, how many times would you expect to draw a green marble? Answer: 12/50
*January 14, 2014*

**4th grade math**

26 + 6 + 10 = ? ?/3= number of books and cd went to each hospital
*January 9, 2014*

**4th grade math**

12 + 7 + 8 = ? ? x 5 = $ How much money they brought
*January 9, 2014*

**Math**

The first two terms in a geometric series is 12. The sum of the first three terms of the same series is 62. Determine the first four terms of the series.
*January 8, 2014*

**Math.**

The first term of a geometric series is 4 and the sum of the first three terms of the series is 64. Find the sum of the first eight terms of the series.
*January 8, 2014*

**Math**

For the geometric series, S4/S8 = 1/17. Determine the first three terms of the series if the first term is 3.
*January 4, 2014*

**cal**

Find the derivative of y with respect to x,t, or theta, as appropriate. y = ∫ ^(√4x) ^basedown√x (ln(t^2)) dt
*December 19, 2013*

**cal**

Evaluate the integral. ∫ 28e^(√7x)/(2√x) dx
*December 19, 2013*

**chemistry**

how do u find the percantage composition of an element?
*December 11, 2013*

**math**

Thanks Steve, but what is the reason for minus 120 and not plus 120?
*December 7, 2013*

**math**

A ferris wheel has diameter of 24 m and is 4 m above ground level at its lowest point. Assume that a rider enters a car from a platform that is 30^0 around the rim before the car reaches its lowest point. Model the rider's height above the ground versus angle using a ...
*December 7, 2013*

**math**

ken spend 1/5 of his money on a dictionary. he gives $21 to his brother and has 1/2 of his money left. how much money does ken have left?
*November 30, 2013*

**currerent amd magnetism**

An Aluminium wire of 1mm diammeter below the critical temperature of 1.2 K. iTS CRITICAL MAGNETIC FIELD IS 0.01t, What is the maximum current in Amperes that you can send down the wire for it to remain superconducting? what formular can I use to solve this? someone please help.
*November 28, 2013*

**Physics**

A model rocket blasts off from the ground, rising straight upward with a constant acceleration that has a magnitude of 92.9 m/s2 for 1.85 seconds, at which point its fuel abruptly runs out. Air resistance has no effect on its flight. What maximum altitude (above the ground) ...
*November 20, 2013*

**Math**

School is planning to purchase a new copy machine. The principal has narrowed the choice to two models. Superfast Deluxe and Quick Copies. He plans to purchase the machine that copies the quickest rate. Use this info to determine which one is faster. Quick copies: c=1.5t where...
*November 18, 2013*

**math**

sally and marta had the same number of postards. after sally sold 18 postards, marta had 4 times as many as sally. how many ostcards did eeach girl have to begin with
*November 18, 2013*

**Physics**

A block of mass m1 = 4.90 kg sits on top of a second block of mass m2 = 14.5 kg, which in turn is on a horizontal table. The coefficients of friction between the two blocks are µs = 0.300 and µk = 0.100. The coefficients of friction between the lower block and the ...
*November 16, 2013*

**Physics**

A train traveling at a speed of 110 km/h uniformly decelerates for 20 seconds. During that time it travels 450 m. a. What is the acceleration ? = m/s2 b. What is its speed after the deceleration ? = km/h
*November 8, 2013*

**Physics**

A crowbar is 4.000 metres long and has its pivot 50.000 centimetres from one end. A force of 2000.000 newtons is applied to the end closest to the pivot. What effort must be applied to the other end of the crowbar to keep it in equilibrium? (Round to 3 decimal places)
*November 1, 2013*

**statistics**

Forty-four percent of customers who visit a department store make a purchase. The probability, rounded to four decimal places, that in a random sample of 9 customers who will visit this department store, exactly 6 will make a purchase is:
*October 27, 2013*

**statistics**

Forty-four percent of customers who visit a department store make a purchase. The probability, rounded to four decimal places, that in a random sample of 9 customers who will visit this department store, exactly 6 will make a purchase is:
*October 27, 2013*

**Math**

cos 2(pi/4 + x) = ?
*October 17, 2013*

**10th us history**

Why did the British fight with the Indians?
*October 16, 2013*

**criminal justuce**

what are the current administration's policies related to crime? I can not find this information, all I can find is articles about drugs
*October 5, 2013*

**physics**

In the apparatus shown in the figure (Figure 1) , m1 = 10kg and the coefficients of static and kinetic friction between m1 and the table are 0.69 and 0.32, respectively. Part A What mass of m2 will just barely set the system in motion?
*October 3, 2013*

**criminal Justice**

Thank you, but where can I find this information. I understand Rational theory is based on the assumptions that people choose their behaviors freely and are motivated by avoiding pain and the pursuit of pleasure. I just can not find information on how criminal justice ...
*September 29, 2013*

**criminal Justice**

Please help me figure out what I am searching for in this question. •Discuss your first theory(Rational Theory) and how criminal justice responses may be formed based on the assumptions of this theory.
*September 29, 2013*

**SS**

Ms.Sue he just said it was a province. It is like a state.
*September 24, 2013*

**SS**

It is basically like a state in the U.S.
*September 24, 2013*

**math**

Yanira is 3 years older than Tim and twice as old as Hannah. Tim is 2 years older than Hannah. How old are Yanira Tim and Hannah? Explain how you did the problem and the answer. math 7 accelerated - tom, Tuesday, September 24, 2013 at 6:46pm Ms. Sue thanks for the help. I ...
*September 24, 2013*

**math 7 accelerated **

Yanira is 3 years older than Tim and twice as old as Hannah. Tim is 2 years older than Hannah. How old are Yanira Tim and Hannah? Explain how you did the problem and the answer.
*September 24, 2013*

**Literature**

A method of humorous or subtly sarcastic expression which is used to explain the direct opposite of what a word means or what actually happens in a story.
*September 23, 2013*

**arithmetic**

28,000 X .05% compounded for 33 years =
*September 19, 2013*

**math**

(-4)-9=5 12-5=7
*September 17, 2013*

**math**

Well first you need to do whats inside the parentheses first because of order of operations. Lets take the denominator (top half) first. 4(2+1)^2 2=1=3 3^2=9 9x4=36 _______ Now take the second half. (1)^2= 1 3x1=3 Now since it's in a fraction from 36 over 3, you simply ...
*September 17, 2013*

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