Questions Asked on
April 24, 2010

chem
In a solution prepared by mixing CH3OH with H2O the major species pesent are 1. a. CH3+, OH, and H2O 2. b. CH3O, H+, and H2O 3. c. CH3OH and H2O 4. d. CH3OH, H+, and OH I know i have to get an equation having trouble doing that!! please help!!
asked by Mark 
chemistry
Use the appropriate values of Ksp and Kf to find the equilibrium constant for the following reaction: PbCl2(s)+ 3OH(aq) >> Pb(OH)3 (aq) + 2Cl(aq). ksp for PbCl2 is 1.17*10^5 kf for complex ion is 8*10^13. anyways...I know that the dissociation of the
asked by anonymous 
Chem
Balance the chemical equation given below, and determine the number of grams of MgO needed to produce 15.0 g of Fe2O3. _MgO(s)+_Fe(s)>_Fe2O3(s)+_Mg(s) 1. a. 11.4 g 2. b. 3.78 g 3. c. 1.26 g 4. d. 0.0877 g I got equation balanced 3,2,1,3 just having
asked by Mark 
Science 8
The question is "Explain the difference between a filament and a photophore." I know that a photophore is a machine that an optomitrist uses to find your prescription for glasses, but I am not sure what a filament means. Please Help!
asked by Maddison 
Science/ Biology 8
There is a question in my science textbook and no where in the textbook can I find the answer neither can I find the answer on the internet. The question is: "If you shine a flashlight in a dark room and sprinkle talcum powder in front of the flashlight,
asked by Maddison 
physics
Find the distance (measured in earth radii, RE) from the center of the earth to a point outside the earth where the acceleration of gravity due to the earth is exactly one ninth of its value on the surface of the earth.
asked by Muhammad 
Chemistry
Hi! So, I thought I was very comfortable with distinguishing among Arrhenius, BronstedLowry, and Lewis acids and bases. But then, I answered this question wrong and am looking for help because I'm not sure if my "second choice" answer is correct. The
asked by JL 
Chemistry
Having some confusion with this question....I have the answers, just not able to reach them. A flask of volume 5L is evacuated and 43.8 g of solid N2O4 is introduced at 77K. The sample is then warmed to 298K during which the N2O4 vaporizes and some
asked by Val 
Math
Q.1)If one zero of the polynomial 3x2kx2 is 2 find the other zero.allso find the value of k. Q.2)If sum of the zeroes of the polynomial x2xk(2x1) is 0,find the value of k Q.3)If 2 and 3 are the zeroes of the polynomial 3x22kx+2m find the values of k
asked by stan 
Chemistry
2NO(g) + O2(g) > 2NO2(g) Derive the theoretical rate law and indicate whether or not this is a possible mechanism for the above reaction: (1) 2NO(g) * N2O2(g) (fast) (2) N2O2(g) + O2(g) > 2NO2(g) (slow) * indicates equilibrium arrows Thank you!
asked by Vanessa 
Math
What ratio represents the probability of drawing a red card from a standard deck of 52 cards?
asked by Dee 
MATH
Please help me with this math problem. 1504((3+9)/(41) X (1411)^2) the answer is 6, I have tried everything and can not get that answer
asked by DEBBIE 
physics
A 22 kg sphere is at the origin and a 12 kg sphere is at (x, y) = ( 22 cm , 0 cm) At what point or points could you place a small mass such that the net gravitational force on it due to the spheres is zero? please show all of work...i don't get it
asked by nimo 
Chem
Given the following hypothetical reaction: 2 E(g) + F(g) + G(g) products. If the rate law is: Rate = k[E]2[F]1, what is the overall order of reaction? 1. a. zero 2. b. first 3. c. second 4. d. third
asked by Mark 
MATH: PROBABILITIES
You ask a neighbor to water a sickly plant while you are on vacation. Without water the plant will die with probability 0.85. With water it will die with probability 0.55. You are 89 % certain the neighbor will remember to water the plant. You come back
asked by Janel 
math
A boat's crew rowed 12 miles downstream, with the current, in 1.5 hours. The return trip upstream, against the current covered the same distance, but took 4 hours. Find the crew's rowing rate in still water and the rate of the current... The crew's rowing
asked by sam 
Chemistry
Which element can form more than one kind of monatomic ion? 1. a. Se 2. b. Sn 3. c. S 4. d. Sr
asked by Mark 
chemistry
2H2O(l)=2H2(g) +O2(g) the stress is an increase in pressure. If there is an increase in pressure, the reaction would go to the side of fewer moles. Even though the left side has no moles of gas, is the result still shifting to the left
asked by bme1 
Math
A painter working at 100 feet from the ground, drops his paint brush onto the street below. The function, s(t)=16t^2+100, gives the height(in feet) of the paint brush as it falls to the ground. The velocity at time t=2 seconds is given by lim
asked by Abbey(Please help) 
algebra
im bad at rounding number, what is 10.81665383 round to the nearest thousandth
asked by sam 
English
1. Join one section of the pipe to the next. 2. Join one section of pipe to the next. (Do we have to use 'the' or not? Which one is correct?)
asked by rfvv 
finance
Brown Enterprises’ bonds currently sell for $1,025. They have a 9year maturity, an annual coupon of $80, and a par value of $1,000. What is their current yield?
asked by carmen 
Math
If the area of triangle wxy is 22 square inches what is the area of wxyz
asked by Garrick 
Physics
A brass wire with Young's modulus of 9.20 1010 Pa is 2.5 m long and has a crosssectional area of 4.6 mm2. If a weight of 5.2 kN is hung from the wire, by how much does it stretch?
asked by Max 
Science 8 Please Help!
Is light transmitted through frosted glass? Explain Please!
asked by Maddison 
calculus
Triangle ABC is an equalateral triangle, with O it's centroid. a) Show that vector OA + vector OB + vector OC = vector 0
asked by Anonymous 
Statistics
The annual Salary of an electrical engineer is given in terms of the years of experience by the table below. Find the equation of linear regression for the above data and obtain the expected salary for an engineer with 45 years of experience. Round to the
asked by Jenny 
Algebra
solve by substitution method y=x4 6x9y=21
asked by Anonymous 
finance
Calculate the rate of interest compounded yearly (j) equivalent to 8% pa compounded quarterly. Give your answer as a percentage per annum to 3 decimal places.
asked by Michelle 
MATH
The 120foot rope is cut into 3 pieces.The first of rope is twice as long as the second piece of rope.The third piece of rope is three times as long as the second piece of rope.What is length of the longest piece of rope.
asked by Anonymous 
english
What does this critical lens quote mean? "Man is the only animal that blushes or has need to".
asked by Jayleen 
Trig
What are some real life applications of logarithims?
asked by Joe Schmo 
physics
Two parallel wires carry currents I1=100A and I2 (they run in the same direction). The top wire is held in position; the bottom wire is prevented from moving sideways but can slide up and down without friction. if the wires have a mass of 10g/meter of
asked by lauren 
latin
Looking for Latin version of “History is the witness that testifies to the passing of time; it illumines reality, vitalizes memory, provides guidance in daily life, and brings us tidings of antiquity.” Marcus Tullius Cicero 10643 B.C., “Pro Publio
asked by MP 
I REALLY NEED YOUR HELP!!!!
"Various theories have been proposed to explain its origin and characteristics, focusing on an assortment of factors, including the social and civic peculiarities of Florence at this time including its political structure and the patronage of its dominant
asked by Maddison 
Data Management gr. 12
I am so confused about correlation equations. I don't know at all how to use them r= W (xxXyy)=Sxy __________________ n *the equation doesnt look exactly like this but it is similar, if i can get any help at all that would be great example question:
asked by Laurie 
Global History
How was trade important to the economic development of Western Europe, the United States, and Japan during the postwar decades?
asked by Jayleen 
calculus
Prove that the sum of the vectors from the vertices to the centre of a regular octogon is a zero vector.
asked by Anonymous 
Chemistry
Could someone walk me through this problem? 6CO2 + 6H2O > C6H12O6 + 6O2 partial pressure of CO2 is .26Torr, temp is 25 celsius, calculate volume of air to prouduce 10g glucose I keep getting confused with stoichiometry....my thinking: convert 10 g
asked by Val 
HUM/205
Select one artwork that expresses a human experience you have encountered in your own life.
asked by Suny 
Chemistry
A solution of vinegar is 4.96% by mass acetic acid in water. Assume the density of the solution is 1g/mL. What is the pH? I have calculated the molar mass of acetic acid to be 60.5
asked by Mike 
Science Grade 8
The question is: "A flashlight does not lose power as you walk away from it, but as you get farther and farther away, it appears to be less and less bright. Explain" First of all I am BAD at explaining things, and when you don't know the answer it is even
asked by Maddison 
economics
Given the business situation of Mrs. Acres Homemade Pies (p. 30) and using the economic concepts of supply and demand, explain 1) Discuss what you think will happen to the supply, demand and price of the product in the shortterm; 2) Discuss what you think
asked by April 
Business/ Math/ Investment
I Only Need Question 3. I have completed the rest. I have had several solutions and cannot come up with an answer. Thank you! Envision that you have served as business manager of Media World for over 2 years. You have noticed that for the last 12 months
asked by Jade 
lal
how to say FUN in a PLURAL way my sentence is fundraising is the easiest and (fun) way in school
asked by Jane 
Science Grade 8
I know that this seems like a REALLY EASY question, but for some reason I cannot think of anything! 2. What technologies have been developed that use light? This is from a grade 8 textbook, so nothing to technical!
asked by Maddison 
To DrBob222
Can you please explain thoroughly to me about all this. Why do we criss cross the formulas of compounds? How do we find out which combining capacity to use if there are more than one? Is there a special formula we use to find out or something? I really do
asked by Sara 
chemistry
What is the pH of the solution created by combining 12.00 mL of the 0.10 M NaOH with 8.00 mL of the 0.10 M HC2H3O2?
asked by need help please!!! 
chemistry
What is the pH of the solution created by combining 8.00 mL of the 0.10 M NH3 with 8.00 mL of the 0.10 M HCl? I found their moles= 8*10^(4)
asked by help please 
gr.8 math
last year Stephanie was paid a base salary of $12,000/ year plus a commission of 3% on the total dollar value of her sales. She sold $1,120,000 worth of company products. How much did she make?
asked by cat 
Global History
How was the economic development of western Europe during the Cold War years similiar ro or different from that of Japan?
asked by Jayleen 
Math
What ratio represents the probability of drawing a red card from a standard deck of 52 cards?
asked by Dee 
Literacy
what are the components of a successful literacy program?
asked by Anonymous 
math
Solve for x: (4x + 1)1/2 = 3
asked by jane 
Algebra
How do you solve and graph these equations? y = 4x + 5 x  2y = 4
asked by Liz 
economics
True or false: If the human capital possessed by two workers is nearly the same, their wag rates will be nearly the same. Explain.
asked by hannah 
math
what is the antiderivative of 1/4sinx+3cosx
asked by kokou 
English
Hello everyone! Can you write me some ideas about: "Being a surgeon is a stressfull job." i coulkd really use some help and also ideas about solve tis problem=stress. So what could eg a surgeon do to be /more relaxed? thank you!
asked by Lulu 
English
1. What did you think about the movie?  I thought it ws very sad. I cried a lot. 2. Which did you think about the movie?  I thought it was very violent. 3. When did you think about the movie?  Yesterday I thought about the movie. 4. How did you think
asked by rfvv 
math
What is the relevance of the order of operations in simplifying a polynomial?
asked by Sara 
world geography
how did colonialism affect the underdevelopment of Latin America?
asked by jenn 
Math
For the function x^2 + 2x  4 , find lim f(h+4)  f(4) / h h>0
asked by Abbey 
Social Studies 8
"Various theories have been proposed to explain its origin and characteristics, focusing on an assortment of factors, including the social and civic peculiarities of Florence at this time including its political structure and the patronage of its dominant
asked by Maddison 
chemistry
Solution A, while in a 1.0 cm cell, has an absorbance of 0.390 and a [Cu2+] = 0.0283 M. Then, 6.57 mL of solution A is diluted with pure water to 100.0 mL. What is the absorbance of this diluted solution? I tried but I still don't get it. Can anyone please
asked by hongkong 
What does PATRONIZED mean?
Look at above question
asked by Maddison 
Marketing
the observing method in marketing research
asked by Luis 
Probability
Probability of drug companies obtainining permission for sale og a drg within 90 days is .75. If a sample of 5 compnanies selected what is the probability that none of them obtaine permission within 90 days.
asked by Anju 
Trig
What are some real life applications of logarithims?
asked by Joe Schmo 
plants
there are mechanisms that prevent pollination of one plant species by pollen from another. this would prevent a) the formation of hybrids between the pollen donor and the pollen receptor b) a waste of pollen c) pollen from attempting to develop on the
asked by serena 
marketing
Several companies use their brand as a competitive advantage. Given your knowledge about the global economy, which brands do you believe have the strongest liklihood of remaining a source of advantage in the 21st century? Why? What effects do you believe
asked by Diane 
Homework ( English)
i must make a police report of the murder from Patick Maloney the question is; imagine that you are one of the defective who is investigating of Patrick Maloney?
asked by Paula 
College Intermediate Algebra
Explain the reason to use tradional solving with a quadratic equation with one variable.
asked by Alyse 
Algebra
y^2 + 1/4 = y how do i do this??? I'm stuck
asked by Alyse 
pre algebra
A customer wants to make a teepee in his backyard for his children he plans to use lengths of PVC plumbing pipe for the supports on the teepee and he wants the teepee to be 12 feet across and 8 feet tall how long should the pieces of PVC plumbing pipe be
asked by Terry 
HUM/205
To what human experience does the work relate? O How is that human experience meaningful to your life? O How does the work express or relate to your human experience? O What social, cultural, and moral values does the work express
asked by Suny 
college math
Cindy deposited $1,000 in an account that pays 12% interest compounded quarterly. How much money will Cindy have in the account after 7 years?
asked by patrice 
To Writeacher
Writeacher, I fixed some things in here, but I know that there are still a few mistakes in here. I think it's with the intro and the ending. Could you please check it for me, and tell what I need to do to make it better. I'll keep on working on it, till
asked by Sara 
8 math
This year Stephanie's commission rate will be cut to2.8%, but her base salary will be raised to $14,000 per year. Should she be concerned? What would the difference in her salary have been if this pan had been in place last year?
asked by Anonymous 
algebra
Give exact and approximate solutions to three decimal places x^2+18x+81=1
asked by Denise 
Math, 11
okay so i am trying to model a cubic equation to fit my curve my base curve is specifications: x value0 to 6.19 amplitude0.77 amplitude coordinates3.73,0.77 x intercepts0,0 and 6.19 , 0 this is my curve and i have to make a equation and include
asked by Functions 
Nutrition
What is the difference between simple and complex carbohydrates?
asked by Anonymous 
math
how do i ,prove: 1/(sec x1) + 1/(sec x1)= 2cotx cscx
asked by luis 
math
how do i ,prove: 1/(sec x1) + 1/(sec x1)= 2cotx cscx
asked by luis 
BIO.
What is a karyotype? What type of information can be obtained from it?
asked by nini 
world geography
how is Central America different from the Carribean? how is it similar? (location, geography, resources, culture, etc)
asked by jenn 
10th grade Biology
Why is diffusion insufficient to meet the oxygen requirement of multicellulars like us?
asked by SAKSHI 
English
Write a passage using rhetorical device on a person, idea or ideology(300 words)
asked by priyanka 
math
what is x for tanx=2/3 in radian
asked by kokou 
algebra
Explain how you would find 4 minus 3 5/6.Justify your steps by using a model.
asked by Anonymous 
To Writeacher
Writeacher I added more at the end, and I fixed some mistakes of mine. I can still feel that there are some awkward places in here, but I can't tell where they are located. I tried to make my ending strong, by speaking from my heart. I wrote what I think
asked by Sara 
Accouting
I need to prepare a multistep income statement for Coyote, Inc from a singlestep statement. Thuis is the following information that I was given. Net sales $1,833,000 Interest Income 13,000 __________ 1,846,000 Costs and expenses Cost of goods sold
asked by Sharon 
Physics
3000 Joules of energy in the form of heat are added to a copper block with a mass of 1 kg. What is the blocks temperature change?
asked by Heidi 
chemistry
when naming alkyl halides with more than one kind of halogen, do u name alphabetically or according to reactivity.
asked by fen 
calculus
Consider the infinite series of the form: (+/)3(+/)1(+/)(1/3)(+/)(1/9)(+/)(1/27)(+/)...(+/)(1/3^n)(+/)... (A) Find x and y from: x(
asked by Megan 
human resources
challenge facing human resources planning
asked by allen 
algebra
How do you find any xintercepts and yintercepts. If no xintercepts exist, state this. g(x)=2x^2+3x1
asked by DD 
geometry
the ratio of juniors to seniors is 9 to 8, if there are 51 juniors and seniors total, which percent of students are seniors? how do i figure this out?!
asked by pleasehelp 
6th Grade Science
How do meteorologists forecast weather?
asked by David 
algebra
the accumulated value of an investment of $15,00 for 7 years at rate of 4.5% compounded semiannually what will that be?
asked by Nette 
statistics
The first class in a relative frequency table is 50–59 and the corresponding relative frequency is 0.2. What does the 0.2 value indicate?
asked by Latoya 
Jan Mann Opportunity School
three bases on a tRNA molecule that complement an mRNA codon
asked by Karina 
English
Hello everybody! I've got some problems with my english homework,and I'd really appreciate our help! My homework is : name a stressfull job eg.:doctor,manager than describe why this job is so stresfull,what can be the causers of sress.Why is this bad if
asked by Lulu 
English
Can you please check the following sentences, please? Thank you very much. 1) As the letters are written in firstperson, they provide different individual points of view on the same event, which can be fully explored. 2) Then, the characters introduce one
asked by Franco 
Math
how do I write a rule for this function? x: 4, 0, 2, 4 f(x): 4, 6, 7, 8
asked by Audrey 
Accounting
Target corp is currently seeking additional capital to expand it's operation. Two companies have shown interset. The first company would like to have part ownership. Company 2 would like to provide target with a loan. Write a memo in which you explain what
asked by Kim 
AED
What are social factors?
asked by Lola 
AED
What are social factors?
asked by Lola 
Algebra
solve and graph each function: 2x = 3y y = 2x + 4
asked by Liz 
image editing
Hi... a huge challenge for me, utilizing the software Photoshop 4, is to balance graphics and text without looking tacky. Any ideas????
asked by Jim 
Psych
Bipolar 1 disorder and bipolar 2 disorder differ with regards to a.whether they include fullblown manic phases b.whether they develop suddenly at an early age or gradually at a later age i think it is A because I know that type 1 is classified by having
asked by Sam 
English
1. What do you think about the musical? 2. How do you think about the musical? (#1 is right, but #2 is wrong? Am I right? Why is #2 ungrammatical?)
asked by rfvv 
English
1. This path leads to the main road near the trees. 2. This path joins the main road near the trees. (Are both the same?)
asked by rfvv 
Math
2+2
asked by HelpmeMath 
Business Analysis / Investment
Help! I have had several solutions and cannot come up with an answer. Thank you! Envision that you have served as business manager of Media World for over 2 years. You have noticed that for the last 12 months the business has regularly had cash assets of
asked by Jade 
government
what can political parties handle better than interest groups? a. raising money b. provide solidary benefits c. create a cleare ideology d. organize people on a large scale
asked by jaden 
Math
solve for g. 0=2,750,000g  2,750,000
asked by John 
quick bio question
What are autosomes?
asked by Anonymous 
spanish
el camarero te comunica los problemas
asked by rodney 
math
how do do you find the percentage of $38676?
asked by jane 
Math
$20768 the percentage for this is 21% please help me through the formula on how this is done get 21%
asked by jane 
maths
how many is 1kg= how many gram
asked by cathy 
math
5+9+2/68*7
asked by fas'e 
Biology Gr. 11
Indicate how a female could inherit complete redgreen colour blindness
asked by susan 
math
what is x for tanx=2/3
asked by kokou 
math
0 = x (x  6.19) (x  s) if you have that, and you wanna find that last zero (root) how do you do it?
asked by HelpPLZisu! 
college algebra
Explain how to identify intervals on which a function increases, decreases, or is constant.
asked by jennifer pemasa 
integration
How do you integrate ; ln(lnx) and x/lnx
asked by michael 
science
what are the pros and cons of laser eye surgery? atleast 5 of each pro and con plz need help urgently thanku
asked by Navroz 
science
Which would be more liquidlike: magma that flows easily or magma that flows difficult?
asked by ciara 
history
Why did relations between the superpowers change in the years 196275
asked by max 
chemistry
Explain how the use of masses, while not a component of Boyle's law, is related to the law.
asked by chase 
geography
These are the two words to describe governments: ruled by____ or_____ Puzzle down 9 letters Thanks
asked by fko 
FORMS OF GOVERNMENT
PEOPLE HAVE MANY SERVICES IN SOCIALISM AND ALSO THIS
asked by fko