Saturday

May 30, 2015

May 30, 2015

Total # Posts: 1,063

**Stats**

Angela is conducting a poll on campus to determine the next student representative. How many students does she need to sample for a confidence level of 90% with a margin of error of + or - 5%?
*May 14, 2011*

**math**

how 2 write 7th may 2011 in 5letters without using numberss
*May 7, 2011*

**College Chemistry**

can someone please explain how to indicate where a label appears in a product? for example: where the label appears in 2-[14C]-Glycine --> AMP
*May 2, 2011*

**lenguage art**

howw would you define the speaker's love for annabel lee ?would you want to feel or be the object of such a love ? explain why or why not.
*May 1, 2011*

**physics**

Choose the correct description for each "Law" of Electricity & Magnetism. The choices are faradays law lenz law ampere law are my choices correct Gives the amount of current resulting from a changing magnetic field.AMPERE LAW Gives the strength of the magnetic field ...
*May 1, 2011*

**Trading Posts**

OMG justin bieber is DYing yeah fanilly he diying no one like jb anymore.
*April 30, 2011*

**Trading Posts**

just kidding, i don't know the queen. but i do need help asap.kkk thanks
*April 30, 2011*

**Trading Posts**

the queen is my grandma.....of canada this is kate middleton
*April 30, 2011*

**Trading Posts**

what were the effects of having to use rivers to complete such long journeys?I really need a good answer by monday can some one plese answer this question for em please come on anyone i know the are smarts people out there in the world...yes no whatever come on some one has to...
*April 30, 2011*

**Geometry**

Find the measure of each angle (x + 1) (4x - 56)
*April 25, 2011*

**physics**

Two wires run parallel to each other with currents I1 = -60.3 A, and I2 = 44.1 A. If they are a = 0.12 m apart, what is the magnitude of the force (N) per meter of length? I used the formula (f/L)=Uo(I1)(I2)/(2(pi)(r)) I got 4.43810^-2(N/m)but it was wrong..I'm not sure ...
*April 24, 2011*

**math**

a draw holds 5 navy socks, 7 white socks and 6 black socks. if two socks are selected at random without looking what is the probability that they do no match?
*April 21, 2011*

**Calculus2**

Please, help me I really need help on this problem. Thank you so much for all your help. Question: Find the radius of convergence and interval of convergence for sum(n=1to infinity)(-1)^n-1 multiply by n(x-1)^n/(n^2+1)2^n Thank you again
*April 21, 2011*

**Calculus2**

Please, help me I really need help on this problem. Thank you so much for all your help. Question: Find the radius of convergence and interval of convergence for sum(n=1to infinity)(-1)^n-1 n(x-1)^n/(n^2+1)2^n Thank you again
*April 21, 2011*

**social studies**

How does the far north of the region differ from the rest of the region?
*April 5, 2011*

**Word Meaning**

unjust
*April 3, 2011*

**math polynomials**

both are right!
*April 3, 2011*

**chemistry**

Write equations for any net reacts in the cases above; then, based on these observations, arrange each of the substances AgCl, AgI, Ag2O, and Ag(NH3)2 + in such an order that their solutions with water would give a successively decreasing concentration of Ag+.
*April 2, 2011*

**chemistry**

suppose you are given the following experimentally observed facts regarding the reactions of silver ion. (a) Ag+ reacts w/ Cl- to give white AgCl (s) (b) Ag+ reacts with ammonia to give a quite stable complex ion, Ag(NH3)2+ (c) a black suspension of solid silver oxide, Ag2O(s...
*April 2, 2011*

**chemistry**

thank you!
*April 2, 2011*

**chemistry**

calculate the OH- concentration in (a) 1.0M NH3 and (b) a solution that is 1.0M in NH3 and also 1.0M in NH4Cl. (Kb = 1.8 x 10^-5 for NH3)
*April 2, 2011*

**chemistry**

thanks!
*April 2, 2011*

**chemistry**

when ammonia is added to Zn(NO3)2 solution, a white precipitate forms, which dissolves on the addition of excess ammonia. But when ammonia is added to a mixture of Zn(NO3)2 and NH4NO3, no precipitate forms at any time. Suggest an explanation for this difference in behaviour.
*April 2, 2011*

**Algebra 2 **

i actually have two questions. - the edge of one cube is 4 m shorter than the edge of a second cube. the volumes of the two cubes differ by 1216m^3. find the edge of the smaller cube. - the sum of the squares of the two larger of three consecutive even integers is 12 less than...
*March 20, 2011*

**Math Algebra 2**

A rectangular garden is fenced on three sides with a wall forming the fourth side. the total length of the fence is 70m. the area if the garden is 600m^2. find the dimensions of the garden.
*March 20, 2011*

**algebra (parabolas)**

to find the axis of symmetry you must use the formula x=-b/2a which in (1. a=1 b=0 c=9) 1.x=-b/2a = o/1(2) 0/2 =0 your axis of symmetry would be 0 and to find out if it goes upward or downward you must plug in more numbers to get more cordinates
*March 20, 2011*

**Algebra 2**

The question says to make a statement about Log A over B & Log B over A & prove it. How do I answer?
*March 15, 2011*

**algebra**

A man wants to build a rectangular pen in which to keep his dog. If he uses one side of his barn, what is the maximum area that he can enclose with 80 meter of fencing?
*March 15, 2011*

**Calculus**

Find the slope of the tangent to the curve y^2=x^3/(xy+6) at (6,3)
*March 15, 2011*

**Math**

I have not learned that way yet I am in 3rd grade we just started mixed numbers
*March 9, 2011*

**Math**

which mixed number is greatest? 1 1/2 1 1/3 1 1/4 1 2/3
*March 9, 2011*

**Physics**

n an auto accident, a car hit a pedestrian and the driver then slammed on the brakes to stop the car. During the subsequent trial, the driver's lawyer claimed that the driver was obeying the posted 35.0 mph speed limit, but that the limit was too high to enable him to see ...
*March 8, 2011*

**Physics**

At 7.65 cents per kilowatt-hour, what does it cost to operate a 10.0 hp motor for 6.00 hr? At 7.65 cents per kilowatt-hour, what does it cost to leave a 75.0 W light burning 24.0 hours a day?
*March 6, 2011*

**physics**

Two carts, one twice as heavy as the other, are at rest on a horizontal frictionless track. A person pushes each cart with the same force for 6.00 s. If the kinetic energy of the lighter cart after the push is K, the kinetic energy of the heavier cart is A. 1/4 K B. 1/2 K C. K...
*March 6, 2011*

**physics**

Two carts, one twice as heavy as the other, are at rest on a horizontal frictionless track. A person pushes each cart with the same force for 4.00 s. If the magnitude of the momentum of the lighter cart after the push is P, the magnitude of the momentum of the heavier cart is ...
*March 6, 2011*

**physics**

To stretch a certain spring by 2.00 cm from its equilibrium position requires 9.50 J of work. a. What is the force constant of this spring? b. What was the maximum force required to stretch it by that distance?
*March 6, 2011*

**Physics**

A heavy rifle initially at rest fires a light bullet. Which of the following statements about these objects is true? A. The bullet and rifle both gain the same magnitude of momentum. B. The bullet and rifle are both acted upon by the same average force during the firing. C. ...
*March 6, 2011*

**Physics**

Cart A, of mass 3.00 kg, approaches and collides with cart B, which has a mass of 7.00 kg and is initially at rest. When the springs have reached their maximum compression, a. cart A has come to rest relative to the ground. b. both carts have the same velocity. c. both carts ...
*March 6, 2011*

**Chemistry**

What unit is barometric pressure measured in?
*February 27, 2011*

**social studies**

I need 3 facts about the code of Chivalry
*February 23, 2011*

**math**

penny has 25 dimes. she likes to arrange them into three piles, putting an odd number of dimes into each pile. in how many ways could she do this?
*February 14, 2011*

**physics**

Never mind I figured it out:)
*February 13, 2011*

**physics**

A positive charge of 4.10 C is fixed in place. From a distance of 3.70 cm a particle of mass 6.80 g and charge +3.60 C is fired with an initial speed of 80.0 m/s directly toward the fixed charge. How close to the fixed charge does the particle get before it comes to rest and ...
*February 13, 2011*

**Pre-Calculus**

How do I make a table for f(x)= [[x-1]] ? It's a greatest integer function..
*February 13, 2011*

**physics**

A positive charge of 5.10 C is fixed in place. From a distance of 3.70 cm a particle of mass 6.80 g and charge +2.60 C is fired with an initial speed of 70.0 m/s directly toward the fixed charge. How close to the fixed charge does the particle get before it comes to rest and ...
*February 13, 2011*

**AP Chemistry**

I have no idea how to answer this question: A compound effuses through a porous cylinder 3.20 time faster than helium. What is it’s molar mass? Help me please? Give a step by step detail please.
*February 10, 2011*

**marketing assignments**

I've done my assignment but i've not done the citations. can u help me
*February 4, 2011*

**chemistry**

How many grams of sodium chloride are needed to prepare a 0.400m NaCl solution that contains 750g of water?
*February 3, 2011*

**math**

Sketch an area model for each exercise then find the product. 74x92
*February 2, 2011*

**Spelling**

Man woman curved
*February 1, 2011*

**physics**

A flat horizontal surface with an area of 650 cm2 is inside a uniform electric field of 2.99×104 N/C. The angle between the area vector and the electric field is 14.8°. What is the electric flux through the surface?
*January 30, 2011*

**Math**

A walks 2Km south to B, she the walks 3km west to C. Find the distance and bearing from C and A
*January 25, 2011*

**math**

Convert the base-ten number to a numeral in the indicated base. 40 to base two
*January 24, 2011*

**Chemistry**

What is the mathematical relationship between pressure and temperature?
*January 20, 2011*

**alg.2**

solve by elimination x+3y=0 2x+6y=5
*January 19, 2011*

**ChemII**

450 grams
*January 9, 2011*

**geometry**

ABCD is a parallelogram. solve for x and find the lengths of BC=16+2x and AD=10+8x
*January 4, 2011*

**AP Chemistry**

(pure CH3COOH) Ka = 1.8 x 10-5 sodium acetate NaCH3COO CH3COOH --> CH3COO + H Ka= [H+][CH3COO-]/[CH3COOH] = 1.8 x10^-5 [H+]= 4.85 pH = pKa + log [base]/[acid] 5.0 (chosen pH of buffer) = 4.85 + log [base]/[acid] .15 = log [base]/[acid] 10^0.15 = [1.41 M]/[1 M]
*January 3, 2011*

**AP Chemistry**

We're doing a lab in my class and we're supposed to make a buffer at a certain pH. I have decided to make a buffer with a pH of 5.0 using glacial acetic acid (pure CH3COOH) and sodium acetate. I found that the ratio of acid to base is 1.41 M: 1.0 M and now I'm ...
*January 3, 2011*

**math**

The discriminant of a quadratic equation is 35. The roots are: a) unequal rational numbers b) unequal irrational numbers c) equal rational numbers d) imaginary numbers Please explain.
*December 27, 2010*

**Algebra**

oops not done. (7/6 a) / 7/6 = (5/3 b + C)/ 7/6 a = (5/3 b + C)*(6/7) a = 10/7 b + 6/7 C
*December 18, 2010*

**Algebra**

C = 1/6 (10b-7a) C = (1/6*10b) - (1/6*7a) C = 5/3 b - 7/6 a +7/6 a +7/6 a C + 7/6 a = 5/3 b -C -C 7/6 a = 5/3 b + C
*December 18, 2010*

**English**

I'm trying to write a short story and there's an intense and mysterious scene that I'm writing. How do I make the scene more intense?
*December 18, 2010*

**Math**

Clara is placing the library books in counting order on the shelves. She has books numbered 849, 853, 774,and 836. How will she put them on the shelves.
*December 15, 2010*

**biology**

explain why mutations are almost always neutral or harmful
*December 14, 2010*

**chemisty**

600 mL of an unknown monoprotic acid was titrated with a standard solution of a 1.0 M base. If it took 40.0 mL of the base to neutralize the acid, what was the H+ ion concentration of the acid in moles per Liter?
*December 14, 2010*

**Chemistry**

Given a solution of ammonium chloride. What additional reagent or reagents are added to prepare a buffer from the ammonium chloride solution? I know the answer is NaOH but I don't know why. Can someone explain this to me please?
*December 14, 2010*

**english**

whats the crossing the threshold for shrek the mivie?
*December 9, 2010*

**Teachers aide**

music or words for four children's songs 2 must be from other cultures.must write song title, the name of the person who wrote it, the publisher's name and city and the copyright date. title: words by: music by: publisher,city,country: copyright date: please help!!!
*December 8, 2010*

**Teachers aide**

5 pamplets or copies that help parents understand how children grow and learn.
*December 8, 2010*

**Math**

What is the number of vertices of a triangular pyramid?
*December 5, 2010*

**Math**

Fill in the blank so that the given statement is true. The median is 77 65,68,78,82,89,__
*December 5, 2010*

**Math**

Fill in the blank so that the given statement is true. The median is 77 65,68,78,82,89,__
*December 5, 2010*

**Math**

<D=12 <G=118 ???
*December 5, 2010*

**Math**

<D is complentary to <E and <D is supplementary to <G If the measure of <E is 78 find the measure of <D and <G
*December 5, 2010*

**Mathh**

<D is complentary to <E and <D is supplementary to <G If the measure of <E is 78 find the measure of <D and <G
*December 5, 2010*

**Chemistry**

Thanks so much. Especially for the ion list link. :)
*November 28, 2010*

**Chemistry**

How do I figure out what ions are present in a compound? Is it as simple as separating the compound? Like HCl --> H+, Cl-
*November 28, 2010*

**Chemistry**

So I mixed 25 mL of 0.002 M KSCN and 25 mL of water in a beaker. The solution was clear with no precipitants. But then it says the ions present in KSCN are: so i put K+,S2- , CN- is that right?
*November 28, 2010*

**accounting**

Alik Amal is a bar in Panama City, Florida. In April 2008, rowdy spring break guests damaged a jukebox that had been purchased in 1995 for $800. The jukebox had a useful life o1 ten years, with an estimated salvage value of $75. Alik AmaI decided to scrap the jukebox after the...
*November 23, 2010*

**accounting**

Glenmore Corp. purchased a fax machine at the beginning of 2007. The fmx machine cost s1,000 and is expected to last live years Its salvage value is expedted to be $50. It Glenmmore uses straight-line depreciabon, what will the fax mactiines net book value be at the end of 2008?
*November 22, 2010*

**accounting**

Adnan's Flower Shop provides floral arrangements for holidays and events. Adflans sold Oxford Cdy Hall a holiday arrangement for 10,000 on account in November Due to a government shutdown in December, Oxford only paid $1,500 otthe amount due within the prescribed period. ...
*November 13, 2010*

**Chemistry**

How do I predict whether the equilibrium lies to the right or left of an Acid-base equation? O[2-](aq) + H2O(l) <--> OH[-] + OH[-]
*November 10, 2010*

**Chemistry**

How do I predict whether the equilibrium lies to the right or left of an Acid-base equation?
*November 9, 2010*

**budget and forecasting**

19.0
*October 31, 2010*

**English**

I don't understand the concept of direct objects just yet. Okay, take the sentence, "Some reach a height of 120 feet." The comments above say it is transitional, but why? What is the direct verb?
*October 28, 2010*

**math!!!!!!! help 3**

that did not help me
*October 27, 2010*

**Chemistry**

What minimum number of moles of NH4Cl must be added to 1.0 liter of solution that is 0.10 M in Mg(NO3)2 and 1.0 M in NH3 to prevent precipitation of Mg(No3)2?
*October 24, 2010*

**Chemistry**

the energy from radiation can be used to cause the rupture of chemicals bonds. a minimum energy of 495 kj/mol is required to break the oxygen- oxygen bond in o2. what is the longest wavelength of radiation that possesses the necessary energy to break the bond?
*October 24, 2010*

**Math**

a=2a/(a-5) How do I work this out?
*October 23, 2010*

**Chemistry**

I don't understand this question and answer can someone help me? In order to exhibit delocalized pi bonding, a molecule must have . At least resonance 2 resonance structures. & In comparing the same two atoms bonded together, the greater the bond order, the shorter the ...
*October 20, 2010*

**Chemistry**

In comparing the same two atoms bonded together, the greater the bond order, the shorter the bond length, and the greater the bond energy. Why is this the case?
*October 19, 2010*

**AP Chemistry**

I don't understand this question and answer can someone help me? In order to exhibit delocalized pi bonding, a molecule must have . At least resonance 2 resonance structures.
*October 19, 2010*

**english**

I have to write a thoughtful composition on the following: Gothic novels emphasize horror, mystery, and the supernatural. Write an analysis of the gothic features of the nvel Frankenstein that are evident in Chapters 1 through 8. How does she Shelley establish an atmosphere of...
*October 19, 2010*

**chemistry**

Ok so im just totally confused because i dont technically have chemistry teacher (i have cancer so i cant go to school so while i have a teacher i can email questions to, he doesnt really help so im stuck teaching myself) & i didn't get any reference to make i sure i got ...
*October 9, 2010*

**math**

The following table gives the cost and revenue, in dollars, for different production levels, q. Answer the questions below. q 0 100 200 300 400 500 600 R(q) 0 450 900 1350 1800 2250 2700 C(q) 670 865 990 1095 1255 1820 2590 1. The fixed costs are dollars 2. The price charged ...
*October 8, 2010*

**math**

At a production level of 1400 items, the total cost is $7250 and the marginal cost is $25. Use this information to estimate the costs of producing the following number of items. Your answers should be whole numbers. a) 1401 items . b) 1399 items . c) 1450 items .
*October 8, 2010*

**algebra**

this is probablt really simple, but for some reason I can't find out how to do it... solve for b; 2a/bc= 12 (show your work)
*October 8, 2010*

**AP Chemistry**

I don't understand that, can you explain it more fully?
*October 6, 2010*

**AP Chemistry**

for BF3 and CH4
*October 6, 2010*