Questions Asked on
June 7, 2012

Chemistry
The voltage generated by the zinc concentration cell described by, Zn(s)Zn2+ (aq, 0.100 M)Zn2+ (aq, ____ M)Zn(s) is 24.0 mV at 25 °C. Calculate the concentration of the Zn2 (aq) ion at the cathode. Hi, I posted this question awhile back but I think it
asked by Katherine 
chemistry
Calculate the cell potential for the following reaction as written at 51 degrees C, given that [Zn2+] = 0.837 M and [Sn2+] = 0.0180 M. Zn(s) + Sn^2+(aq) = Zn^2+(aq)+Sn(s) E = __ V Reduction HalfReaction Standard Potential Ered° (V) Zn2+(aq) + 2e– →
asked by Katherine 
Chemistry
A student completes titration by adding 12.0 mL of NaOH(aq) of an unknown concentration to 16.0 mL of 0.15M HCl(aq). what is the molar concentration of the NaOH(aq)?
asked by Nina 
physics
What is the minimum downward force on the box in the figure that will keep it from slipping? The coefficients of static and kinetic friction between the box and the floor are 0.38 and 0.28, respectively.
asked by garth 
Physics! plese help
A 1320N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A 1960N crate hangs from the far end of the beam. Using the data shown in the figure, find (a) the magnitude of the tension in the wire and the
asked by Jessi 
math
4. Gregory teaches martial arts. He charges a onetime processing fee of $5.00 and the cost of the classes is shown below. Let x represent the number of classes and y represent the cost of classes. Based on this information, what will it cost to take 10
asked by Jane 
Physics
Two spherical objects with a mass of 2.88 kg each are placed at a distance of 2.12 m apart. How many electrons need to leave each object so that the net force between them becomes zero?
asked by Tanner 
Physics
Pith Balls Two small pith balls, each of mass m = 17.7 g, are suspended from the ceiling of the physics lab by 0.8 m long fine strings and are not moving. If the angle which each string makes with the vertical is è = 42.6°, and the charges on the two
asked by Jenipher 
physics
a metal ball with a charge of 5.4x10^8 electrons is touched to another metal ball so that all the excess electrons are shared equally. What is the final cahrge on the first ball?
asked by lindsay 
English
Does this have paraelle structure Neither pesticides nor hormones are used in the production of organic foods.
asked by Raven 
Physics
Some bacteria are propelled by motors that spin hairlike flagella. A typical bacterial motor turning at a constant angular velocity has a radius of 1.9x108m, and a tangential speed at the rim of 2.5x105 m/s. (a) What is the angular speed (the magnitude
asked by Jessi 
Physics Equations of Motion
Along a straight road through town, there are three speedlimit signs. They occur in the following order: 66 , 31 , and 19 mi/h, with the 31 mi/h sign located midway between the other two. Obeying these speed limits, the smallest possible time tA that a
asked by Jackie 
Physics
The magnitude of the momentum of a cat is p. What would be the magnitude of the momentum (in terms of p ) of a dog having two times the mass of the cat if it had the same speed as the cat? What would be the magnitude of the momentum (in terms of p ) of a
asked by BigJoe 
finance
You have finally saved 10,000 and are ready to make your first investment. You have the three following alternatives for investing that money: 1) Captial cities ABC Inc. bonds with a par value of $1000 that pays an 8.75 percent on its par value in
asked by Chris 
Chemistry.
Calculate the volume of carbon dioxide produced when 0.5 tonnes of iron are produced. When iron oxide is heated with carbon monoxide, pure iron and carbon dioide are formed. Answer: 500000g/112g/mol =?/3 = 13392.9L
asked by Jeconiah 
world geography (PLEASE HELP ME WITH THIS)
ok i have to do a bibliography for nigeria and bolivia. those are both the title of my essays that i have to do. i researched and did everything i could to understand what they mean by a "bibliography" essay. i failed my first essay about bolivia because
asked by tasha 
Physics(Please help)
A dentist causes the bit of a highspeed drill to accelerate from an angular speed of 1.44 x 104 rad/s to an angular speed of 5.05 x 104 rad/s. In the process, the bit turns through 1.77 x 104 rad. Assuming a constant angular acceleration, how long would
asked by Hannah 
chemistry
Record and calculate the following masses: (a)mass of empty beaker: 47.420g (b)mass of beaker plus Na₂CO₃:47.920g (c)Mass of Na₂CO₃:0.5g (d)mass of beaker plus NaCl:47.438g (e) Mass of NaCl (g):0.018g **I need help with these questions below** 2.
asked by chelsea 
chemistry
Consider the system 2N2O5(g) 2N2O4(g) + O2(g) + heat at equilibrium at 25C. If the temperature were raised would the equilibrium be shifted to produce more N2O5 or more N2O4? 1. more N2O4 2. more N2O5 3. There would be no effect.
asked by luke 
eq
Hanger is to closet as tree is to (A) forest. (B) branch. (C) bird. (D) ground.
asked by beby 
Physics
An electron moves on a circular orbit in a uniform magnetic field. The strength of the field is 1.00×105 tesla. The kinetic energy of the electron is 178.0 eV. (1 eV = 1 electron volt = 1.6 ×10−19 joules.) Calculate the radius of the orbit. (electron
asked by Stryker 
physics
a square with side length 2.0 cm has a charge of 1.0x10^6C at every corner. What is the magnitude and direction of the electric force on each charge? What is the force on a fifth charge placed in the centre of this square? Does the sign of the fifth
asked by lindsay 
geometry
LM has the endpoints L(1,1) and M(5,3) find the coordinates of the midpoint of LM
asked by seth 
math
find the equation that meets the given conditions: a varies directly as the square of r and a=9 pie when r=3
asked by mathstuck 
Physical Geography
Assume that a parcel of air is forced to rise up and over a 6000foothigh mountain. The initial temperature of the parcel at sea level is 76.5°F, and the lifting condensation level (LCL) of the parcel is 3000 feet. The DAR is 5.5°F/1000’ and the SAR
asked by Sandra 
Algebra
If the trend continued, in how many years would the median home value be $170,000? Show how obtained your answer using the linear equation you found in part c) Suppose that the width of a rectangle is three feet shorter than length and that the perimeter
asked by Jewel 
mba
from a set of 1000 observations known to be normally distributed the mean is 534 cm and sd is 13.5 cm. how many observations are likely to exceed 561 cm, how many will be between 520.5 cm 547.5 cm, between what limits will the middle 50% of the
asked by quantitative analysis for managerial applications 
calculus (check my work please)
Not sure if it is right, I have check with the answer in the book and a few integral calculators but they seem to get a different answer ∫ sec^3(x)tan^3(x) dx ∫ sec^3(x)tan(x)(sec^2(x)1) dx ∫ tan(x)sec(x)[sec^4(x)sec^2(x)] dx ∫
asked by Jay 
Chemistrystoichiometry ...help!
Calculate the volume of carbon dioxide produced when 0.5 tonnes of iron are produced. When iron oxide is heated with carbon monoxide, pure iron and carbon dioxide are formed. Ans: 500000g/112g/mol= 13392.9L
asked by Jeconiah 
Math
The state of texas covers approxmiately 268,581 squared mi. During a hail storm the entire state is covered in 1billion meters of hail.(average radius of 1.4292cm)assume the hail falls so that the gaps of air are limited to 26% of the volume. As the state
asked by Bill 
Chemistrystoichiometry ...help!
Calculate the volume of carbon dioxide produced when 0.5 tonnes of iron are produced. When iron oxide is heated with carbon monoxide, pure iron and carbon dioxide are formed. Ans: 500000g/112g/mol= 13392.9L
asked by Jeconiah 
Math C30
An airplane is leaving the first airport (A) at a bearing of 70 degrees. It then travels 238 miles to airport B. After fueling up, it leaves at a bearing of 120 degrees and lands at airport C. After fueling up it finally returns to airport (A) at a bearing
asked by Jill 
English 7  "Dear Reader" Letter Check
Can you check my letter. It's a project for English. We are making our writing portfolios. I'm almost done I just have to do this. Dear Reader, This year I done some great improvement as a writer. I add great vocabulary in my pieces. When I'm reading, it
asked by Laruen 
physics
An arrangement of two pulleys, as shown in the figure, is used to lift a 49.6kg mass a distance of 3.70 m above the starting point. Assume the pulleys and rope are ideal and that all rope sections are essentially vertical. (a) What is the mechanical
asked by Akbar 
eq
Desert is to oasis as ocean is to (A) water. (B) sand. (C) sea. (D) island.
asked by beby 
Physics
An electron travelling in the same direction that an electric field points initially has a speed of 4.21 ×107 meters per second. If the electric field has a magnitude of 2.28 ×104 N/C, how far does the electron travel before stopping?
asked by John 
chemistry
aluminum has a density of 27g/cm3 if a chunk of aluminum with a mass of 16g is placed in a graduated cylinder partially filled with water how much will the water level rise
asked by Ana 
Algebra
If the trend for the growth in the median home value continues=d, what would be its value in the year 2007? show how you obtained your answer using the linear equation you found in part c).
asked by Jewel 
math
Lawrence was training for a mararthon. He ran 9.59 miles total the first week of training. On the second week of training,he ran 16.58 miles total. How many more miles did he run the second week than his first? tip: It's deciamls subtraction
asked by andy 
English 7
foreshadow definition??? (literary term)
asked by Laruen 
mba
from a set of 1000 observations known to be normally distributed the mean is 534 cm and sd is 13.5 cm. how many observations are likely to exceed 561 cm, how many will be between 520.5 cm 547.5 cm, between what limits will the middle 50% of the
asked by quantitative analysis for managerial applications 
math
In a hypermarket promotional drive, the customers would only have to pay half of the original price on their second buy of the same item and one quarter of the original price on their third buy of the same item for some selected items. A customer bought 3
asked by beby 
PhysicsPLEASE HELP ASAP
A tungsten target is struck by electrons that have been accelerated from rest through a 38.9kV potential difference. Find the shortest wavelength of the radiation emitted.
asked by Kevin 
maths
if alpha and beta are the zeros of the polynomial 2x^24x+5 then find the values of (i)alpha^2+beta^2 (ii)1/alpha^2+1/beta^2 (iii)(r)alpha/beta+(r)beta/alpha (iv)alpha^1+beta^1
asked by echo 
math
5/4 times 5
asked by cookiecrumbs 
Physics please help!
A tungsten target is struck by electrons that have been accelerated from rest through a 38.9kV potential difference. Find the shortest wavelength of the radiation emitted.
asked by Gracie 
Math Algebra Find the Product
(4y+5)(4y5) 16y^220y+20y25 16y^225 Am I correct
asked by Adriana 
Geometry
You have a figure with 6 sides. Each side measures 4.3m. What is the perimeter?
asked by Angelique 
Health care
Which has a greater influence on a person’s health: individual choices and actions (micro perspective) or community policies and resource availability (macro perspective)?
asked by Lee 
Capstone Accounting
Assessment of the strategic fit between Square D and Schneider. What are the pros and cons of a combination?
asked by Sherry 
Physics
Distance DC = FE = HG = AB = 2.7m FH = FD = GE = EC = CB = 2 m Find the supporting reaction of H, Member BD (Tension Force), Member CE, and Member CF? Figure Links: freeimagehosting 72dje
asked by ToT_Alex 
Chemistry
What is the molarity of a solution prepared by dissolving 2 moles of BaCl2 in enough water to make a 4.0 L solution? M= mols/L a. 0.5 M b. 8.5 M c. 17.1 M
asked by Anonymous 
DeskToping
_____ are symbols used to indicate changes that need tobe made to text. A. Proofreaders marks B. Correction Marks C. Insertion Marks D. Preview symbols I got A.
asked by Sarah 
Math
15) Marissa is 3 years older than her younger brother. Her older brother is twice as old as her younger brother. Her older brother is 18. How old are Marissa and her younger brother?
asked by Sammyjoo 
Math
a farmer wants to fence in part of her land so that her chickens will have thier own little area. if she only has 28 feet of fence, what is the area of the largest pen that she can build?
asked by Alyssa 
physics
Explain how an object can orbit a planet & why astronauts float around in the orbiting space shuttle
asked by deresse 
mba
from a set of 1000 observations known to be normally distributed the mean is 534 cm and sd is 13.5 cm. how many observations are likely to exceed 561 cm, how many will be between 520.5 cm 547.5 cm, between what limits will the middle 50% of the
asked by quantitative analysis for managerial applications 
AP Literature & Composition
For the life of me, I can't seem to remember the name of Whitney's brother from the shory story "The Premontion" by Joyce Carol Oates. I read years ago. Does anyone remember his name?
asked by Gwen 
hum/111 critical thinking
how might you use critical thinking to help someone who is struggling with low selfesteem and low selfworth to see beyond the media message they receive on a daily basics?
asked by sharon 
algebra
1/4x2
asked by kulot 
Psychological Statistics
Simply reporting measures of central tendency or measures of variability will not tell the whole story. Using the following information, what else does a psychologist need to know or think about when interpreting this information? A school psychologist
asked by Den 
Physics
A tungsten target is struck by electrons that have been accelerated from rest through a 38.9kV potential difference. Find the shortest wavelength of the radiation emitted.
asked by Jason 
Algebra 1BCheck Please!
1.) Determine the equation of the axis of symmetry. y = 5x2  x + 9 Answer 1.) x=3/2 2.) Determine the equation of the axis of symmetry. y = 6x2 + 3x  4 Answer 2.) x=2/10
asked by Mackenzie 
math
How can I calculate how long an amount of money will last if I spend x dollars per month, at the same time as the pot of money is attracting interest at y percent? Is thare a formula? Thanks
asked by charlie 
Physics Please Help ASAP
A tungsten target is struck by electrons that have been accelerated from rest through a 38.9kV potential difference. Find the shortest wavelength of the radiation emitted. (answer has to be in nm)
asked by Rebecca 
Math add the polynomials
(7ab+4a2b4)+(a2b47ab) The 2 and 4 are on top of the a and b. (sqare #)
asked by Adriana 
ECONOMICS
Imagine that you manage a company that has invested $5 million in developing a new product, but has not completed development. At the last meeting, your salespeople report that the arrival of new competing products has reduced expected sales of your new
asked by Booker Perry 
math multiply
8xy(x+y) is answer 8x^2y+8xy^2
asked by Adriana 
Math
1.Let f(x)= x^2  5 and g(x)= 3x^2. Find g(f(x)). 2. Let f(x)= x^2  4 and g(x) 3x^2. Find f(g(x)).
asked by Neil 
physics
a motorisrt accelerates their car to 36m/s before realising they are over the speed limit and decelerates to 32m/s. calculate the distance traveled
asked by nick 
geography
Southwest Asia can best be characterized as A) an area with few resources. B) a desert with an arid and semiarid climate. C) a region of forests. D) an area of forests and grasslands. I think it's B, just checking! thanks in advance
asked by Ali 
Science
I left out the following statements. Thank you very much, Ms. Sue 1) The researchers in a group led by Paro, crossed the files of six generations. Thanks to this experiment, they were able to prove the temperature treatment changes the eye of colour of
asked by Mike 
science
what do you call a river or stream that runs or flows really fast?
asked by samantha 
College Algebra
How would I go about solving for x in the equation: ln(4x2)ln(4)=ln(x2) Thanks in advance
asked by Rina 
ethics
The outlawing of slavery and extending voting rights to women seem to indicate that ethics can have beneficial results. Give an example from the past that indicates a similar result or a current social policy that might be regarded as wrong, which
asked by Anonymous 
functions
F(x) x^411x^3+34x^26x52 Write f(x)as the prouduct of two linear binomials and a quadratic trinomial
asked by karen 
GEOMETRY
Last fall, a gardener planted 56 iris bulbs. She found that only 49 of the bulbs bllomed in the spring. Find the empirical probability that an iris bulb of this type will bloom. give answer as a fraction in lowest terms. How many bulbs should she plant
asked by angela 
economics
Determine the sum of money that must be invested today at 9% interest compounded annually to give an investor annuity (annual income) payments of $5,000 per year for 10 years starting 5 years from now.
asked by sam 
world history
What are some political, economical, and social effects on the Cold War?
asked by Leah 
maths
a man has one kind of coffee at 'a' paise per kg and another at 'b' paise per kg.how much of each must he take to form a mixture of (ab)kg, which he can sell at 'c' paise per kg without loss.
asked by sagar 
math
A sum of RM1,600 is to be distributed among A, B and C. A will get 4 times as much as B and B 3 times as much as C. How much will A get?
asked by beby 
Business
). How could benchmarking be effectively used to achieve competitive advantage? Provide an example. 2).What information is gained through managerial accounting? How can a business use this information? As an investor in a small business, what sorts of
asked by Vickie 
math C30
An isosceles triangle is inscribed in a circle. The shortest side is the base which is 16 cm long. If the radius of the circle is 10 cm, what is the length of side "a"? Put your answer to 1 decimal place into answerblank 1 (no spaces) Answer:
asked by Jill 
math
What are the xintercepts for the function f(x) = x2  5x + 6?
asked by moesha 
Physics
B___A (inclined at 55 degree) / /\ /  / \ Pull 3900N / / DC  /  /  /  !@#$%^&E  /  /  /  HG (All is Pin Joint) Distance DC = FE = HG = AB = 2.7m FH = FD = GE = EC = CB = 2 m Find the supporting reaction of H, Member BD (Tension Force),
asked by Stupid Alex 
math
My tens digit is 2 times your hundreds digit My hundreds digit is 4 My ones digit is a factor of your tens and hundreds digit Who am I?
asked by Anonymous 
math multiply and simplify
12s^29s4s+3 = 12s^26s+3
asked by Adriana 
Math (Algebra)
little Johnny is skate and wants to go a ramp that is 100 foot drop. His path is determined by the equation:h(t)=16r^2+60t. How long does it take for him to reach the bottom of the 100 foot drop?
asked by Tahmina 
Math
Carl hired 4 people to work in his shipping department for a week at 8 hours a day. However, after working only 4 hours on the third day, the work was completed. How many hours of wages does Carl owe to the workers?
asked by Oliver 
chemistry
what is the difference between a redox rxn in and acidic soln or basic
asked by chemistt 
social studies
how many books are in dr.suess, yertle the turtle?
asked by Celest 
Art
Could you please check scientific English in this short dissertation? Thank you, Ms. Sue. 1) Conrad Waddington introduced the term epigenetics in the early 1940s. He defined epigenetics as ‘‘the branch of biology which studies the causal interactions
asked by Mike 
to ms.sue
i mean how many books did he publish in yertle the turtle.
asked by Celest 
english
why did tim o'brien mention the snakes in his novel "lake of the woods"?
asked by fahima 
Humanities
Explain the focus on the idea of natural law as an extension of human nature during the conclusion of the seventeenth century.
asked by grace 
Algebra
1) The following graphs shows the growth of the median home value in a particular region of the united states starting in 1996. The graphs states in 1996 and shows the trend through the year 2000; therefore x=0 represents the year 1996 and x=4 is 2000.
asked by Jewel 
Algebra
List the coordinate of any two points on the graph in (x,y)form. The numbers on the horizontal axis are 1,0,2,0,3,0, 4.0 and 5.0 (___,___), (___,____) Find the slope of this line Find the linear equation of this line in slopeintercept form.
asked by Jewel 
Algebra
14) There are 6 marbles in a bag, 3 blue, 2 red, 1 green. Aubrey reaches into the bag and pulls out a marble, does not replace it, then chooses another. What is the probability that Aubrey chides a blue and then a green marble?
asked by Sammyjoo 
Pre algebra
How do I solve Quadratic equations by factoring? (for example how would I solve n2  10n = 21 if I was supposed to get the answers 7 and 3?
asked by Grace 
physics
A car starts from rest and travels for 6.3 s with a uniform acceleration of 2.3 m/s2. The driver then applies the brakes, causing a uniform acceleration of −1.9 m/s2. If the brakes are applied for 2.6 s, how fast is the car going at the end of the
asked by j 
physics
idea about the impact of energy field through medicine
asked by airiz 
English 7
rising action definition
asked by Laruen 
maths
If n is an odd integer, all of the following are odd EXCEPT (A) n  2 (B) 2n + n (C) n2 + n (D) (n + 2)2
asked by beby 
maths
For a certain year, a ski resort averaged d dollars per week in receipts for its 20week season. If the resort was closed for w weeks during the season because of lack of snow and earned no money during those weeks, how much money did it earn per week, on
asked by beby 
physics
A motor drives a rope drum of 820 mm diameter, which in turn drags a component of mass 650 kg, 175 m up a slope that makes an angle of 8 degrees to the horizontal. the component starts from rest and uniformly reaches a velocity of 5.3 m/s on completion of
asked by James 
Geology
What can be done to help society improve its understanding of the world's natural resources and how to utilize them? Why?
asked by Betty 
Art
Ms. Sue, could you please check this part,too? Thank you 1) He explained why he wrote Gomorrah; he did it for the new generations, seeing kids who dream to be a killer, who see in crime the only way of achievement. Boys and girls without hope. He saw his
asked by Mike 
Art
Ms. Sue, I need to include these sentences I posted a few days ago to Writeacher. Thank you very much! 1) I'm forwarding you the link to the European Etwinning certificate of quality. 2) Online projects carried out among two or more European schools can be
asked by Mike 
business finance
Her are the data on $1000 par value bonds issued by Microsoft, Ford, and Xerox at the end of 2008, Assume you are thinking about buying these bonds as of January 2009. Answer the following questions. a. Calculate the values of the bonds if your required
asked by Chris 
English
What does fantastical mean? My essay topic is compare the fantastical in Poe and lawrence's "the rocking horse"
asked by Saira 
computer SQL
Consider the universal table D = {P, Q, R, S, T, U, V, W, X, Y, Z} with the following set of functional dependencies: {P, R} > {Q, T, U} {T} > {S} {V, W} > {X, Z} {X} > {Y} What is the primary key for D? Decompose D into 2NF tables. Decompose D into 3NF
asked by ken 
Math
Solve for x. .006x^3=8889 x = approx 114, but I don't understand how to get that answer. Can anyone help me solve? Thank you!
asked by Francesca 
child development
the curricular approach which encourages children to explore, experiment, and discover is
asked by shajuan 
math algebra
multiply and simplify (4z)z =4zzsquare? can you please let me know if I am correct
asked by Adriana 
english 125
identify at least one major similarity and one major difference between the forms of the short story and the poem.
asked by deedee 
Algebra Divide
x^8+x^5/x Please help im stuck
asked by Adriana 
chemistrry
what is the Q of a rxn?
asked by chemist 
Art
Ms Sue, could you please help me express the following ideas? Thank you. 1) Have you thought of a possible common theme? Of course we'll have to wait till September because the school year is about to end. Actually, it ends next Wednesday. 2) If my mother
asked by Mike 
chemisttry
what is the significance of delta H,S,G in thermodynamics
asked by chemist 
Chemistry.
Is this formula (Fe2O3) iron oxide?
asked by Jeconiah 
Chemistry. Please help quick!!!
Is this chemical formula (Fe2O3) iron oxide?
asked by Jeconiah