Sunday

March 29, 2015

March 29, 2015

Total # Posts: 803

**chemistry re crystalizing**

describe basic steps to take re-crystalizing synthesized aspirin. using two solvents to perform this task (ethanol and water)which solvent should be used to dissolve the aspirin and which one should force it out of the solution
*November 13, 2012*

**Stat Help**

The Momoland Springs Company claims that there are at most 1 ppm (parts per million) of benzene in their water. Test at a=.10 n=25 = 1.10 ppm s = .20 ppm
*November 6, 2012*

**Statistics Please help!**

A company claims that cancer patients using drug X will live at least 8 more years. n=25 = 8.5 year s = 1.5 year a) Test at a=.01 b) Give the CIE at 95%
*November 6, 2012*

**pyshc101**

As Bridget is walking through a parking lot, a bicyclist swerves toward her. Her heart races and sweat breaks out as she jumps out of harm’s way. Soon, Bridget’s heart begins to decrease and return to a regular rhythm. This calming reaction is due to the action of ...
*October 28, 2012*

**Physics**

236.4+.24F
*October 27, 2012*

**physics help i still dont get it**

i forgot to divide the sqrt by 2.5 to get .116 sorry but thank u
*October 22, 2012*

**physics help i still dont get it**

Thank you so much but its just upsetting me i cant figure it out
*October 22, 2012*

**physics help i still dont get it**

ill try it but i have no idea how you get the angle appreciate it
*October 22, 2012*

**physics help i still dont get it**

A picture of width 43.0 cm, weighing 52.0 N, hangs from a nail by means of flexible wire attached to the sides of the picture frame. The midpoint of the wire passes over the nail, which is 2.50 cm higher than the points where the wire is attached to the frame. Find the tension...
*October 22, 2012*

**physics**

When a 0.116 kg mass is suspended at rest from a certain spring, the spring stretches 3.50 cm. Find the instantaneous acceleration of the mass when it is raised 5.70 cm, compressing the spring 2.20 cm
*October 22, 2012*

**physics need help bad**

A picture of width 43.0 cm, weighing 52.0 N, hangs from a nail by means of flexible wire attached to the sides of the picture frame. The midpoint of the wire passes over the nail, which is 2.50 cm higher than the points where the wire is attached to the frame. Find the tension...
*October 22, 2012*

**need help**

whats the answer so i can compare
*October 22, 2012*

**need help**

A picture of width 43.0 cm, weighing 52.0 N, hangs from a nail by means of flexible wire attached to the sides of the picture frame. The midpoint of the wire passes over the nail, which is 2.50 cm higher than the points where the wire is attached to the frame. Find the tension...
*October 22, 2012*

**cis210**

No idea
*October 22, 2012*

**physics**

When a 0.116 kg mass is suspended at rest from a certain spring, the spring stretches 3.50 cm. Find the instantaneous acceleration of the mass when it is raised 5.70 cm, compressing the spring 2.20 cm
*October 22, 2012*

**physics**

When a 0.116 kg mass is suspended at rest from a certain spring, the spring stretches 3.50 cm. Find the instantaneous acceleration of the mass when it is raised 5.70 cm, compressing the spring 2.20 cm
*October 22, 2012*

**physics**

When a 0.116 kg mass is suspended at rest from a certain spring, the spring stretches 3.50 cm. Find the instantaneous acceleration of the mass when it is raised 5.70 cm, compressing the spring 2.20 cm
*October 22, 2012*

**math**

WHAT YOU NEED HELP WITH HUN
*October 13, 2012*

**math**

A company produces three types of color TVs: Models X, Y and Z. Each model X requires 2 hours of electronic work and 2 hours of assembly work. Each Y model requires 1 hour of electronic work and 3 hours of assembly work. Each model Z requires 3 hours of electronic work and 2 ...
*October 1, 2012*

**Maths, Ratio**

Mrs Rama uses 0.4 liters of water melon juice for every 0.9 liters of apple juice to make a jug of mixed fruit juice. A) Find the ratio of the amount of watermelon juice to the amount of apple juice. B) For every 225 ml of apple juice, how much watermelon juice should Mrs Rama...
*October 1, 2012*

**Physics**

The person in the drawing is standing on crutches. Assume that the force exerted on each crutch by the ground is directed along the crutch, as the force vectors in the drawing indicate. If the coefficient of static friction between a crutch and the ground is 1.12, determine ...
*September 26, 2012*

**Physics**

A car is towing a boat on a trailer. The driver starts from rest and accelerates to a velocity of +14 m/s in a time of 25 s. The combined mass of the boat and trailer is 401 kg. The frictional force acting on the trailer can be ignored. What is the tension in the hitch that ...
*September 26, 2012*

**chemistry**

Copper (II) fluoride contains 37.42% {\rm F} by mass. Use this percentage to calculate the mass of fluorine (in {\rm g}) contained in 56.0{\rm g} of copper (II) fluoride
*September 24, 2012*

**Math-Stats**

1/2000= 0.0005 produces a payout of - $14800.00 1/500= 0.002 = 4/2000 produces a payout of -$3800 399/400= 0.9975= 1995/2000 profits Question One Probability table is a follows X----(neg)14800---(neg)3800--200 P(x)-1/2000-------4/2000-----1995/2000 Question two Expect Value= ...
*September 24, 2012*

**science**

what is the density of a piece of wood that has a mass of 85.0 grams and a volume of 100.0 cm 3 ?
*September 18, 2012*

**Chem 204 Lab**

Dr. S. N. Too ran the above reaction using 10.00 g of 1,5-pentanediol and 7.00 g of HCl. He obtained 9.23 g of 1,5-dichloropentane. What was his per cent yield? HO(CH2)5OH + 2 HCl --------> Cl(CH2)5Cl + 2 H2O
*September 12, 2012*

**Chem Lab**

@Drbob222 2-methyl-2-butanol
*September 12, 2012*

**Chem Lab**

Why should the temperature be kept 48C during distillation? is it because of the melting point?
*September 12, 2012*

**math**

How can I put A={1,4,7,10,13,16,19,22,25,28} in set builder notation. I just learned this and can't figure it out.
*September 8, 2012*

**economic**

How do corporate America's acceptance of greed influence how we behave in a capitalist society?
*September 8, 2012*

**Health**

How many American adults does OCD affect each year? A. 1.2 million B. 2.2 million C. 3.2 million D. 4.2 million I put D and missed it. D:
*August 30, 2012*

**Health**

Thank you. I figured it wasn't mercury or cholesterol but i've never heard of Potassium. :P Thank you Ms.Sue! <3
*August 29, 2012*

**Health**

It’s important to choose foods that provide more ________. A. Potassium B. Cholesterol C. Mercury D. Carbohydrates I put D and got it wrong.. What could it be?
*August 29, 2012*

**HEALTH**

Yes, it's A.
*August 22, 2012*

**health**

No. It's D. they are both uninucleated. Meaning having one nucleus.
*August 22, 2012*

**HEALTH**

You're correct.
*August 22, 2012*

**physics**

the other equation you can use use is: Vf^2=Vi^2+2AX sqrt(2(3m/s^2)(500m))=54.78 m/s same thing. for the second part you use the same equation and solve for A. Then plug it in to Vf=Vi+AT, solve for T. for the third you do the same thing.
*August 20, 2012*

**Science**

1. Find the lattice parameter of pure iron at room temperature. 2. What is the ratio of the lattice parameter of the iron to the wavelength of the radiation used. 3. What is the value of two theta for the second peak? 4. By what factor is the lattice parameter of the Fe bigger...
*August 15, 2012*

**health**

I believe it's C.. I am probably wrong.. But I have bad anxiety and they've used both on me.
*August 14, 2012*

**geometry**

Is it possible for two points on the surface of a prism to be neither collinear nor coplanar?
*August 14, 2012*

**Geometry**

George, John, Thomas, John, George
*August 13, 2012*

**HEALTH**

I think it's either B, or C,
*August 13, 2012*

**English**

BACDABCDAAC
*August 13, 2012*

**health**

It's A.
*August 11, 2012*

**health**

It's B. Quit cheating on your Ashwood University James Madison HS health quiz.
*August 11, 2012*

**HEALTH**

I'm pretty sure it's D. DBT is Nation Debt something and PBT has to do with toxic chemical control and CBT is computer based teaching
*August 11, 2012*

**health**

I believe it's C.
*August 11, 2012*

**health**

I had the same question-It's A.Talk to ones friends or family.
*August 8, 2012*

**algebra**

factor! or use quadratic formula. :) the answers are....... 4 and -1/5 :)
*July 24, 2012*

**Business Calculus**

never mind
*July 18, 2012*

**english**

Thanks, and I had meant to put in narrator.
*July 16, 2012*

**english**

I would like to know if this would be a good thesis to prove for the novel: The Great Gatsby. Thesis: Nick Carraway as the author has both its advantages, and its disadvantages; Nick begins the novel as an objective character full of honest thoughts, yet as the novel unfolds, ...
*July 16, 2012*

**Physics**

A basketball player throws a ball at an angle of 30º above the horizontal. At what point does the magnitude of the acceleration reach a minimum?
*June 20, 2012*

**Grade 11 Math**

tow similar polygons have areas of 100 square inche s and 81 square inces. if a side of the first is 6 incehs find the corresponding side of the second polygon
*June 17, 2012*

**College**

If the line passing through point (a,1) and (8,7) is parallel to the line passing through the points (4,9) and (a+2,1) what is the value of a?
*June 12, 2012*

**Physics - Help!!!**

I want to be sure I'm using the right formula for this question: Calculate the electric force between 2 electrons that are 5.3 x 10^-11 m apart (electron charge = -1.6 x 10^-19 C) I'm using the equation for Coulomb's Law: F = K (q1 q2)/d^2 (-1.6 x 10^-19)(-1.6 x 10...
*May 31, 2012*

**Physics - Help!!!**

I am having trouble understanding transformers!! Here is the problem I have to solve: A protable CD player requires 12 volts to operate. A transformer allows the device to be powered from a 120-volt outlet. If the primary has 500 turns, how many turns should the secondary have...
*May 29, 2012*

**Physics**

A portable CD player requires 12 volts to operate. A transformer allows the device to be powered from a 120-volt outlet. If the primary has 500 turns, how many turns should the secondary have?
*May 28, 2012*

**Math**

a + 7b = 7 a + 2b = -3
*May 27, 2012*

**english romeo and juliet**

I need a artifact for the story with quotes and the artifact can not be in the story just has to represent quotes from the story
*May 23, 2012*

**Philosophy**

i need the questions answered ms.sue
*May 16, 2012*

**Philosophy**

Please help answer these questions Argument: Anything is possible Therefore, it must be possible that something is impossible This is a contraction - Not everything is possible because anything is possible. Types of appeals in arguments (Aristotle) Pathos - appeals to emotion ...
*May 16, 2012*

**intro to ethics - philosophy**

I need the answers for these not for someone to check them
*May 16, 2012*

**intro to ethics - philosophy**

REWRITE: 1) Correct the problems with this title: Author And The Seventh Day 2) Place commas: Afterwards John went home and he went to bed. 3) What is wrong with this sentence?: John went home, he went to bed. 4) Place a question mark: “ What do you want from this class&#...
*May 16, 2012*

**algebra**

2x+y=4 -x+y=1
*May 8, 2012*

**Physics**

Three point charges, +6.7e-6, +2.5e-6, and -3e-6, lie along the x-axis at 0 cm, 2.4 cm, and 5.7, repectively. What is the force exerted on q1 by the other two charges? (to the right is positive) . The coulomb constant is 8.99*10^9 N*m^2/C^2 What is the force exerted on q2 by ...
*May 1, 2012*

**Physics**

If an object has twice the electric potential of another object, does it also have twice the electrical potential energy? Why or why not?
*April 30, 2012*

**math**

In the glass atrium at the entrance to the city aquarium, a designer wants to suspend a 2400-N sculpture of a dolphin. It will be secured by three chains, each of length 4 m. The chains are anchored to the ceiling at three points, spaced 3 m apart, that form an equilateral ...
*April 27, 2012*

**College Algebra**

bank a is lending money at 5.7% interest compounded annually. The rate at bank b is 5.6% compounded monthly, and the rate at bank C is 5.65% compounded quarterly. Which bank will you pay the least interest?
*April 25, 2012*

**Math**

Need to find equation for 1250=1200+4-375. Is this possible or impossible. Need to find how to figure these type of questions. This is 3rd grade homework
*April 24, 2012*

**physics**

awnser is 60-apex
*April 17, 2012*

**language arts**

My mom went to the grocery store.she forgot her purse
*April 16, 2012*

**Physics**

FM radio signals are electromagnetic waves transmitted between frequencies of 88 MHz and 107 MHz. Find the range of wavelengths for these signals. largest I have used the equation, but im doing something wrong, so if i could get the answer instead of just the equation it would...
*April 16, 2012*

**Physics**

FM radio signals are electromagnetic waves transmitted between frequencies of 88 MHz and 107 MHz. Find the range of wavelengths for these signals. largest
*April 16, 2012*

**Physics**

FM radio signals are electromagnetic waves transmitted between frequencies of 88 MHz and 107 MHz. Find the range of wavelengths for these signals. largest
*April 16, 2012*

**math**

so how to do i find out if its a right triangle?
*April 15, 2012*

**math**

micheal drew a triangle with the sides measuring 12.5cm,30cm,32.5cm. using the pythagoream theorm determine of micheals triangle is a right triangle. explain. PLEASE HELP ME WITH THIS ONE!!
*April 15, 2012*

**algebra**

sara can take no more than 22 pounds of luggage on a trip. her suitcase weighs 112 ounces. how many more pounds can she pack and not go over the limit?
*March 21, 2012*

**Math **

What does x equal in x^2/(.81-x)?
*March 20, 2012*

**Chemistry**

What is initial concentration of a sodium acetate if the pH (at epuilibrium) is measured to be 9.30?
*March 20, 2012*

**chemistry**

Calculate the pH of a 0.87 M NaCN solution. Solve it exactly (no assume x=0.1)
*March 20, 2012*

**6 grade math **

how do you work out this problem, find the height of a parallelogram with an area of 224 square meters and a base of 16 meters.show work please thank you
*March 19, 2012*

** 6 grade math**

how do you find the height of a triangle with an area of 245 square inches and a base of 14 inches.
*March 19, 2012*

**6 grade math**

find the height of a triangle with an area of square inches and a base of 14 inches
*March 19, 2012*

**6 grade math**

yes
*March 19, 2012*

** 6 grade math**

how do you find the height of an area of 245 square inches and a base of 14 inches.
*March 19, 2012*

**Chemistry**

Which of the following would you add to a mixture of CaCO3(s) and its saturated solution to increase the molar solubility of CaCO3: more water, Na2CO3, NaOH, NaHSO4? Explain.
*March 19, 2012*

**chemistry**

A solution is saturated with Ag2CrO4. a) Calculate [CrO4^2-] in this saturated solution. b) What mass of AgNO3 must be added to 0.635 L of the solution to reduce [CrO4^2-] to 1.0* 10^-8M?
*March 19, 2012*

**physics**

5.6kg
*March 19, 2012*

**Living environment**

acidic substance secreted by glands in the stomach wall is it pepsin enzyme that breaks down starch into maltose is it salivary amylase organ in which bile is stored is it gallbladder
*March 13, 2012*

**chemistry**

Ca(OH)^2 does not completely dissociate. It only partially dissotiates in water to form OH- and Ca+2. An equilibrium mixture of Ca(OH) and its dissolved ions is found to have a pH= 10.3 what is Kc for this dissociation?
*March 13, 2012*

**Science**

Describe a hybrid plasmid. What is this?
*March 12, 2012*

**Stats**

a coin is tossed twice, or until the first "tails" appears, whichever comes first. which of the following is the sample space for this random experiment? A, S=(H, T) B. S=(T, HT, HH) C. S=(T, TT)
*February 23, 2012*

**statistics**

The data listed below shows the number of hospitals in each state, using the data, complete a frequency table using 8 classes. all the data has been ordered from smallest to largest. 7,8,12,14,14,15,15,15,19,21,23,25,29,30,34,36,36,38,40,40,51,53,55,56,59,61,63,71,73,74,75,76,...
*February 22, 2012*

**statistics**

The data listed below shows the number of hospitals in each state, using the data, complete a frequency table using 8 classes. all the data has been ordered from smallest to largest. 7,8,12,14,14,15,15,15,19,21,23,25,29,30,34,36,36,38,40,40,51,53,55,56,59,61,63,71,73,74,75,76,...
*February 22, 2012*

**perimeter problems math**

janet built a 5-inch ny 7-inch rectangle A:what is the perimeter of janets rectangle? B:the perimeter of olivia's rectangle is 150% as long as janet's. what is the perimeter of olivia's rectangle? C. what is the area of janets rectangle? D.the area of walters ...
*February 21, 2012*

**algebra**

28 decreased by 6 times a number is the same as the number
*February 18, 2012*

**IB MATH STUDIES IA**

I meant actually who has better memory
*February 13, 2012*

**IB MATH STUDIES IA**

I am finding whether men or women are smarter. I am doing a chi-squared test to see if theres a correlation. What other sophisticated processes can i do?
*February 13, 2012*

**English**

Find The Subject and Verb in this sentence. Candle wax dripped onto the table and hardened into pools.
*January 31, 2012*

Pages: <<Prev | 1 | 2 | 3 | **4** | 5 | 6 | 7 | 8 | 9 | Next>>