Questions Asked on
May 2, 2012

Chemistry
A galvanic cell is constructed with a silversilver chloride electrode, and a nickel strip immersed in a beaker containing 7.44 x 102 M solution of NiCl2. Determine the balanced cell reaction and calculate the potential of the cell. Enter in volts.
asked by Kayla 
calculus
Find the volume of the solid obtained by rotating the region bounded by y=5x+25, y=0 about the yaxis.
asked by Anonymous 
calculus
the region enclosed by 2y=5xy=5 and 2y+3x=8. Decide whether to integrate with respect to x or y, and then find the area of the region. The area is
asked by Anonymous 
Grammar basic English
Identify the preponsition in the folloing sentence: (You can't live your life hiding in your room all day.)
asked by Jamie 
anatomy and physiology
compare and contrast the two feedback mechanisms our bodies use to maintain homeostasis
asked by Anonymous 
Math 207
If the work required to stretch a spring 4 feet beyond its natural length is 17 footpounds, how much work is needed to stretch it 35 inches beyond its natural length? Your answer must include the correct units. (You may enter lbf or lb*ft for ftlb.)
asked by Anonymous 
which of the following sentences is the symbol
which of the following sentences is the symbol used correctly? A. According to Alan, the survey revealed that population growth increased twentyone% in 2005. B. Rachel’s rent has gone up to 765$ a month. C. Jason bought three books & two magazines. D.
asked by which of the following sentences is the symbol 
Discreet MAth
Describe the graph and why it is consistent with the matrix. How many simple paths are there from vertex 1 to vertex 5? Explain.Which is the shortest of those paths? Part II: Trees Construct and describe a tree that indicates the following: A college
asked by Derric 
physics
If I halve the distance between 2 gravitating bodies,Newtons universal law of gravity states that the force between them will____ to _____ of the force begore the change. Thank you for the help
asked by brent k 
History
Could you help me with the What? When and Significance of each event? pls help me on what you can, not all of them are necessary, even thought that would be great if you could! Thank you!! Causes of Great Depression Dust Bowl Bonus Army March Franklin
asked by genius 
Physics need work checked
Physics lenses. Please help, my math is wrong and I need second opinion.? Consider three lenses with focal lengths of 25.9 cm, 15.8 cm, and 10.0 cm positioned on the x axis at x1 = 0 m, x2 = 0.412 m, and x3 = 0.514 m, respectively. An object is at d =
asked by Physics 
Physics HELP!!
What is the de Broglie wavelength of an electron that strikes the back of the face of a TV screen at 1/10 the speed of light?
asked by Jared 
Physics!!
Green light is emitted when electrons in a substance make a particular energylevel transition. If blue light were instead emitted from the same substance, would it correspond to a greater or lesser change of energy in the atom? and why?
asked by Jake 
chemistry
Calculate the pH of a 2.5x105 M lithium hydroxide solution.
asked by Liz 
Chem
Dissolving 3g of ascorbic acid in 50g of acetic acid lowers the freezing point of acetic acid by 1.33degreesC. What is the molecular mass of ascorbic acid?
asked by james 
physics
Tension is maintained in a string. The observed wave speed is 21 m/s when the suspended mass is 3.0 kg. a) What is the mass per unit length of the string? (in kg/m) b) What is the wave speed when the suspended mass is 1.6 kg? (in m/s)
asked by andrew 
English
Can anyone tell me where in King Lear does GLoucester find out that Edmund made up the lies about Edgar? Would be greatly appriciated.
asked by Bailey 
Geography
What is a gorge?
asked by Barbie 
chemistry
how long is 1phenyletanol and 2octanol? size of group phenyl of 1phenyletanol?
asked by trang 
Maths
In a box of fruit there were 11 oranges and 9 apples. What fraction of the fruit were the oranges?
asked by Brad 
calculus 3
determine the value of the constant α so that f(x,y) is continuous at (1,1) if f(x,y): i)sin(x+y)/(x^(2 )– y^2 (x,y)≠(0,0) ii) α (x,y)=(0,0)
asked by alya 
A01 and A02 points
Hi, i'm a university student studying Religion and Education. I have an assignment where i have to build a teacher pack, with resources for the lesson, i have to write a 2000 word evaluation of the pack. its for an Alevel class studying Sikhism and their
asked by SamCaron 
Biology
In pea plants the colour of the peas is genetically controlled. Each pea represents a separate fertilisation. Smooth texture (S) is dominant to wrinkly (s) and green (G) colour is dominant to yellow (g). Following a breeding experiment with pea plants, the
asked by Jane 
math URGENT
Multiply.Express each answer in its simplest form. what is 1/3 x 1/2
asked by syahana 
physics
The maximum displacement of a vibrating body on either side of its mean position is known as its
asked by Anonymous 
physics
Define adolescence.
asked by Anonymous 
Chem 1
Consider the following reaction. Assume that there is excess C3H7SH present. If we start with 0.5 moles O2, how many mols of SO2 can form?
asked by jenni 
Calculus
A group of tourists went to Sentosa. The total fare is $240. If 10 more tourists join the tour each will pay $4 less. Find the original number of tourists in the group
asked by Phyl 
physics
can an object go around a corner with no forces acting on it?
asked by lisa 
Math
A box contains 4 red cubes, 3 blue cubes, 2 green cubes, and 1 yellow cube. You pick two cubes at random, replacing each after you pick. Find the probability of each compound event.
asked by Mary 
physics
a2kg hockey puck is sliding across the frictionless ice at 6m/s.how much force is required to keep it moving at 6m/s
asked by lisa 
physics
a hockey puk is sliding across frictionless ice at 6m/s. a) what is the net force on the puck? b)what forces act on the puck?
asked by lisa 
physics 1
a car is being pulled out of the mud by two two ropes
asked by Anonymous 
French
Have you ever try thefrenchproofreader service ? I need some help in french for my homework. Is there another website for that ?
asked by Steve 
math
how to find perimetre of triangle
asked by ganeshbabu 
english
Name an object, person, place, or action that you could use to symbolize each of the following: 1freedom 2a difficult experience 3a disappointment 4telling a lie 5an obnoxious child 6a new opportunity 7making a new friend 8a politician 9being a
asked by please help me!! 
Algebra
use elimination to solve this problem x +8y = 3 4x  2y = 7
asked by shae 
Geometry
Zoe the goat is tied by a rope to one corner of a 15 meterby25 meter rectangular barn in the middle of a large grassy field. Over what area of the field can Zoe graze if the rope is 10 meters long? 20 meters long? 30 meters long?
asked by Anonymous 
Foreign languages
Could you please check if these disconnected sentences are possible? Thank you, Writeacher. 1)Italy sided with Germany (aslo allied with Germany) and declared war on the Western Powers. 2) Can I replace Italy with "she"? Example: Italy was invaded by the
asked by Frank 
Chemistry questions
1) Calculate the mass of NaHCO3 required to generate 50mL of CO2, at 1 atm. pressure and 25*C. Do I need to use PV=nRT? where for n it will be both my n's from C and O2 together? 2) Solubility of CO2 in water at 25* is 0.145g in 100mL. Assuming the
asked by Jimmy 
English
In which sentence is an a homonym used correctly? 1. Karen's new dog had flees. 2. If you ask me , there's no hobby like fishing. 3. How many ours do we have to wait. 4. We had chocolate ice cream for desert.
asked by Bridget 
algebra
POW 11 How old is mrs. wenzl When Kailey asked her grandmother how old she was, She responded, The two digits in my age are the ages of your brother Angler and sister Alanna. If you add their ages to mine, the sum is 83. How old is Mrs. Wenzl
asked by linda stanich 
Chemistry
KMno4+NaHso3
asked by Ali 
life orientation
in 1015 lines critically in 5 ways in which environment problems impacts on community
asked by samke 
business
A telephone conversation may not be as acceptable a method for conveying information as a written document because a telephone may: a. be unavailable when you need to make the call. b. not be convenient for the receiver. c. not provide a confidential
asked by Anonymous 
Geometry
Triangle UVW is the preimage of triangle RST with a scale factor of 3. Find the area of triangle UVW if the area of triangle RST is 9 cm2.
asked by Lindsey 
calculus
Find the volume of the solid formed by rotating the region enclosed by y=e2x+1, y=0, x=0, x=0.9 about the yaxis.
asked by carlton 
English 2
Shakespeare uses Calphurnia to build suspense about what will happen in all of the following ways except a.urging Caesar not to go to the Senate. b.recounting all the disturbing omens. c.suggesting that Caesar pretend he is ill. d.relating that she dreamt
asked by Lauren 
calculus
find the volume of the solid generated by revolving the region bounded by the graphs of the equations y=2sqrtx, y=o, x=3 about the xaxis.
asked by carlton 
chemistry
specific heat capacity
asked by zenayda 
Algebra 2
Simplify (3^−2 − 2^−2)^−1 The answer is 36/5 I just need to know how to do it.
asked by Alex 
math
When two die are tossed,throwing a sum of 7 is three times more likely than throwing a sum of 11.if the probability of throwing a sum of 11 is 1:18,what is the probability of throwing a sum of 7?
asked by Cherie 
Math
70 out of 35,000,000 are struck by lightening each year.what is probability of being struck by lightening each year? Express this probability as a fraction reduced to its simplest terms,as a ratio,and as a percent
asked by Cherie 
calculus
Verify the identity: (tanx+1)/(secx+cscx) = sinx
asked by ASH 
algebra 2
Solve the inequality (x3)/(2x+1)>0
asked by Samantha 
algebra
use geometric a[1]=40 a[4]=135 find a[3]
asked by Anonymous 
Geometry
The ratio of the areas of two similar trapezoids is 1/9. What is th eratio of the lengths of their altitudes?
asked by Shay 
physics
A pendulum makes 23 vibrations in 36 s. What is its period in seconds?
asked by ashlee 
math
Find the seventh term of (pj)^55
asked by Garen 
Finance
Judy Johnson is choosing between investing in two Treasury securities that mature in five years and have par values of $1,000. One is a Treasury note paying an annual coupon of 5.06 percent. The other is a TIPS which pays 3 percent interest annually. a. If
asked by Johniece 
architecture
Consider what you have learned so far about the use of light in medieval, African, and North American buildings and artworks. Select a specific example, fully identified, and address the following in your discussion posting: How was light and height used
asked by Rober 
Psychology
What is a criticism of the Klinesmith et al (2006) study
asked by Anonymous 
a
Consider what you have learned so far about the use of light in medieval, African, and North American buildings and artworks. Select a specific example, fully identified, and address the following in your discussion posting: How was light and height used
asked by janvert 
decision science
The university computer lab has 10 computers which are constantly being used by students. Users need help from the one lab assistant fairly often. Students ask for help at a Poisson rate of an average of 4 requests per hour for any one computer. the
asked by sharon 
calcalus
Water is leaking out of an inverted conical tank at a rate of 12200 cubic centimeters per minute at the same time that water is being pumped into the tank at a constant rate. The tank has height 15 meters and the diameter at the top is 65 meters. If the
asked by ali 
Basic college math
A rectangular kennel measures 26 1/2 feet by 20 1/4 feet. Find the area of the kennel in square feet.
asked by Shelly 
physics
a hockey puck is sliding across frictionless ice at 6m/s. a)what is the net force on the puck? b)what forces act on the puck?
asked by lisa 
English (poetry)
Create a symbol and write a short essay on what the symbol means. This should be a piece of short fiction using the symbol as the central focus in the essay or a poem either using the symbol as a focus or describing the symbol’s meaning. Be sure you
asked by please help me!! 
Life orientation
Poverty, pollution, hiv aids, nutrition, floods. Name two institutions or community organizations that are involved in supporting or giving redress to these disasters. Explain how these organizations are involved in providing a safe and healthy
asked by Melissa 
Life orientation
1: In 1015 lines critically discuss 5 ways in which the human or environmental problem impacts on the community ( HIV AIDS ). 2: Provide recommendations on how to address HIV AIDS. Thank you!:)
asked by Melissa 
Chemistry
Calculate the final concentration for the standardization of KMnO4 given this information: 2MnO4 + 5C2O4^2 + 16H+ > 2Mn^2+ + 10CO2 + 8H2O [final redox equation] Volume of KMnO4 titrated with H2SO4 + Na2C2O4 = 293 mL Volume KMnO4 titrated with H2SO4
asked by Katherine 
chemistry
A 500 ml bottle of 16 M hydrocholric acid is diluted to a final volume of 5,0 liters .. what is the concentration of the new diluted , HLC sloution
asked by Anonymous 
Calabasas High
Find the product: 7y^2(y^4 + 8y^3  6y^2  5y  8)
asked by Jill 
Mathematics
a cuboid with length 13cm width 4cm and height h State in terms of h the shaded face of the cuboid. write an expression in terms of h for the volume of the cuboid. if the volume of the cuboid is 286cm cube calculate the height h of the cuboid.
asked by SAM 
Mathematics
make x the subject of the formula y=2x+3 x4 hence determine the inverse of f(x) for the equation where x is not equal to 4
asked by India 
chemistry
What is the pH of a solution formed by mixing 400 mL of 0.025 M HCl with 600 mL of 0.015 M NaOH?
asked by piper 
Algebra 2
What is the equation of a parabola whose vertex is (5, 2) and whose graph is 6 times taller than y=x^2? Include y= as part of your answer
asked by Daniel 
math
Expand as a binomial series and simplify (2x + y^3)^5
asked by Jason 
math chart
Julia babysat for the family next door.Below are the hours she worked. Monday:4 hours Tuesday:2 and 1/2 hour Wednesday:1 hour Thursay:1 and 1/2 hour Friday: 3 hours how do i put this information on the chart.the chart looks like this:
asked by Celest 
social studies
Which of the following is true of the Supreme Court's decision in Brown v. Board of Education of Topeka? A. It established that all citizens should have access to public education. B. It ruled that segregation should proceed with "all deliberate speed." C.
asked by Anonymous 
Intermediate algebra
Factor the following expression completely: 9x^481y^2
asked by Fai 
Chem 1
consider 400 mL of a0.266 M LiNO3 solution. To what volume must it be diluted to make a 0.075 M LiNO3 solution.
asked by jenni 
chemistry
If 10L of CO2 at STP and 50g sodium chloride react with excess ammonia and water, what is the limiting reactant and the mass of baking soda produced?
asked by maria 
math
Solve the following system using elimination. If a single solution exists, write the solution as an ordered pair. Your answer will be an ordered pair, no solution, or infinitely many solutions. x3y=5 2x6y=10
asked by ,algebra 
math
simplify the following expression: 11!/3!8!
asked by Mark 
to ms.sue
i still don't get it.
asked by Celest 
Chemistry
1000 g of 55%(mass percentage) nitric acid solution is to be diluted to 20%(mass percentage) nitric acid solution. How many liters of water should be added to the starting solution?
asked by Wube 
english
Metamorphosis, by Franz Kafka If Gregor had a chance to relive his life, what should he do differently? Anyone who knows this novel very well could you maybe give me a few things to say?
asked by please help me!! 
math
Solve the following system using elimination. If a single solution exists, write the solution as an ordered pair. Your answer will be an ordered pair, no solution, or infinitely many solutions xy=4 3x5=2
asked by ,algebra 
physics
A person stands in front of a mirror at an amusement park. the person is left of a mirror. the mirror shows an upright image of the person that seems to be 4.0 meters behind the mirror. assume the image is 3.5 times the person's height. a) is the image
asked by deep 
math
For the arithmetic series 13+19+... a. find tsub27 b. find Ssub27 c. if tsubn = 445, find n
asked by Josh 
chemistry
4. An experiment similar to yours was done by Julio. He used 0.0024 mole of lead instead of magnesium. He collected 45 ml of wet hydrogen gas at 25 degrees Celsius and 0.98 atm. How many ml of H2 gas should Julio have collected? What was Julio’s percent
asked by preshi 
chemistry
1. When gases are collected using displacement of water, some water vapor mixes in with the gas being collected. A student performed a similar experiment in which 35.2 ml of H2 gas was collected over water at a temperature of 21 degrees Celsius. If the
asked by preshi 
chemistry
2. Zinc metal reacts with HCL similarly to magnesium: Zn(s) + 2HCL(aq) = ZnCl2(aq) + H2(g). the H2 gas produced was collected over water at 25 degrees Celsius and had a volume of 7.80L at 0.980 atm. How many grams of Zn were consumed in the reaction?
asked by preshi 
chemistry
3. Another volatile liquid was used in a similar experiment. A student found that 0.32 g of vapor had a volume of 152ml at 100 celsius and 1 atm. What was the molar mass of this gas? 4. The empirical formula of the unknown gas in question 3 is CH4O. What
asked by preshi 
history
the Puritan dilemma can someone help me check my answers the answers with an (*) at the end them are the ones i think are right 1. Englishmen rejoiced when Henry VIII turned his back on the Pope because now they felt they would be free to join the
asked by eric 
history
Hamilton / Jefferson Readings Quiz can someone help me check my answers the answers with an (*) at the end them are the ones i think are right 1. Alexander Hamilton thought that having a virtuous citizenry was a necessity in a Repulic. A) True * B) False
asked by eric 
physics
A frictionless pendulum is made with a bob of mass 19.7 kg. The bob is held at height = 0.934 meter above the bottom of its trajectory, and then pushed forward with an initial speed of 2.93 m/s. What amount of mechanical energy does the bob have when it
asked by Anonymous 
Math
The Lee family wants to buy a new round dining table. Their rectangular door frame is 3 feet wide and 6.5 feet high. If the legs are attached to the table, approximate the greatest length of its diameter so that the table can be placed into the dining
asked by askaaska 
Math
As part of a training exercise, 16 firemen need to carry equipment up a ladder hooked to the top of an office building that is 15 meters tall. If the base of the ladder is 7 meters from the wall, about how long is the ladder?
asked by askaaska 
science
How do you think objects will fall when there is no air
asked by matt 
World History
All are True/False 1. After WWI, Ho Chi Minh tried to get the U.S. to support independence for Vietnam. 2. Ho Chi Minh's forces and the U.S. were allies during WWII. 3. America's First direct involvement in Vietnam came during the Johnson administration.
asked by Destiny 
math
Write four arithmetic means between 35 and 98.
asked by Kylie 
Psyc Research Methods
In the above study, the researchers reported the following mean femininity ratings (i.e. higher numbers indicate greater femininity): male small meals (2.02) male large meals (2.05) female small meals (3.90) female large meals (2.82) Assume that there
asked by Jessie 
math
Find the number to which this geometric series converges: 200170+144.5...
asked by Nat 
trigonometry
Find all the angles between 0 degrees and 360 degrees which will satisf y the equation: 5tan^2 y +5 tan y = 2 sec^2 y
asked by lindsay 
grammar
Which of the following sentences is punctuated correctly? (1 point) Melissa said that she would never go on a cruise. Justin asked, “Will tickets be available online”? “Of course,” Mr. Howard replied “You can buy tickets and rent a car online.”
asked by nobody 
Physics Help
Does atomic excitation occur in solids as well as in gases? Yes or No and Why?
asked by Josh 
SQL Server
I have created a Database called Business with the 2 tables as follows: dbo.Orders ID OrderID ItemName Quantity Price SalesID dbo.Sales SalesID FIrstName LastName OrderID I need to create a stored procedure to show all the data from both tables in xml
asked by Lisa 
programming
I have created a Database called Business with the 2 tables as follows: dbo.Orders ID OrderID ItemName Quantity Price SalesID dbo.Sales SalesID FIrstName LastName OrderID I need to create a stored procedure to show Total Sales of each sales, including
asked by Lisa 
math
Anita and Maria went to the candy store. Maria bought 5 pieces of fudge and 3 pieces of bubble gum for a total of $5.70. Anita bought 2 pieces of fudge and 10 pieces of bubble gum for a total of $3.60. Determine the cost of 1 piece of bubble gum.
asked by ,algebra 
statistics
A committee consisting of 6 people is to be selected from eight parents and four teachers Find the probability of selecting three parents and three teachers?
asked by Ambra 
Physics Help please
im not really understanding the question can someone please help me. the energy difference between states A and B is twice the energy difference between states B and C (C > B > A). In a transition (quantum jump) from C to B, an electron emits a photon of
asked by Jared 
trigonometry
Find all the solutions of x,for 0 is less than x is less than 2 pi a. Sin(x + pi/4 + sin(x  pi/4)= 1 b. Sin(1/3 x+5) = 1/2
asked by lindsay 
gainesville middle school
Mary buys 8 widgets for $40.00. She adds $1.00 in enhancements to each widget and sells them for $9.00 each. What is Mary's estimated gross profit margin?
asked by india rodriguez 
Intermediate Algebra
Create a list of six questions on solving equations with absolute value symbols that I will try to research, address, discuss, and/or express with my method?
asked by Roger 
math
Name the point of intersection for the following system, if it exists. Your answer will be an ordered pair, no solution, or infinitely many solutions. 4x3y=3 3xy=6
asked by john 
math
I am less than 12+25. I have more ones than tens.which number am i
asked by damion carlisle 
Math
1.Describe the effects on the graphs y = sin k0(0 is theta) and y = cos k(0 is theta) as the value of k vaires.
asked by katrina 
statistics
when 325 students are randomly selected and surveyed, it is found that 117 own a car. Construct a 99% confidence interval estimate of the true proportion of all college students who own a car.
asked by frank 
math
Benny drew an octagon with two right angles. What is the sum of the measures of the other angles? A 100 degrees B 900 degrees C 800 degrees D 620 degrees my answer is D
asked by miki 
college algebra
1/2 log 25 3 log x
asked by connor 
Math
Shipwrecked marines wrote this message in the sand, knowing that their searchers would be able to decode it. What does it mean? 64 25 144 256
asked by Toni 
Probability
A pair of fair dice is tossed once. Find the probability a sum of 5 or 3 appears.
asked by Amanda 
Chemistry
Barium Nitrate is a not very soluble nitrate. Calculate the Ksp (at 25 degrees) from the following ΔG's: Ba2+ = 561kj/mole NO3 1 =  109kj/mole Ba(NO3)2 =  797 kj/mole
asked by tina 
algebra 2
Write an equation for a parabola with vertex at (3, 6) and focus at (3, 4).
asked by david 
chemistry
For the strong acid solution 9.7×10−3 , determine (H3o+)and (OH)
asked by Jessica 
math
What would the unit rates be for a store that had 30 customers in 12 minutes?
asked by Anonymous 
chemistry
For the strong acid solution 9.7×10−3 , determine (H3o+)and (OH)
asked by Jessica 
math
What would the unit rates be for a store that had 30 customers in 12 minutes?
asked by Anonymous 
Art
I left out the following statements. Thank you, Writeacher. 1) He believes that many adults censor the television because they fear losing (is "to lose" wrong?) control over their children. 2) He makes advances to her but his social rank hinders him from
asked by Frank 
Science
Who and when was the electric light bulb invented? 1879 by Thomas Edison
asked by Colton 
Social Studies
Who and when was the zipper invented? 1893 by Whitcomb Judson
asked by Colton 
Science
A vaccine can protect you against a disease because it (1)destroys toxic substances from bacteria before they can make you sick\ (2) stimulates your immune system against the pathogens (3) kills any pathogenic bacteria in your body (4) changes pathogenic
asked by George wang 
physics
you push a large box across the floor at a constant velocity of 3m/s. a)what is the net force on the box? b)what forces act on the puck?
asked by lisa 
physics
you are sitting at rest in a chair. a)what is the net force on you? b)what forces act on you?
asked by lisa 
math
how long will $600K last, assuming it earns 6% a year with a withdrawl of 4% annually and inflation rate of 2%
asked by john 
physics
suppose a box is sliding along the floor,and friction is resisting its motion with a force of 160n.how much force do you need to exert to keep the box moving at a constant velocity?
asked by lisa 
world history
Which of the following as a result of the Crusades ? A.permanent conquests of the Holy Land by Christians B.religious tolerance in Western Europe C.increased trade in Western Europe D.the reunification of the Roman and Byzantine churches My answer is C ?
asked by ciara 
physics
What is the force exerted on 40 micro coulombs by 20 micro coulombs? (charges are separated by 80cm)
asked by paul 
6th Science
what section heats the thick liquid found in the mantle? please help me.. thank you.
asked by poisoned thorn 
African American Lit
How is the poem 'Sadie and Maud' by Gwendolyn Brooks synonymous to Realism, Naturalism and Modernism?
asked by J 
Precalculus
Verify the identity (Left side to right side). {(cosucosv)/(cosu+cosv)}=tan1/2(u+v)tan1/2(uv)
asked by Dash 
Calculus
Verify the identity. (Left side to right side) {(sinu+sinv)/(cosu+cosv)}=tan1/2(u+v)
asked by DAS 
Social Studies
Who invented virtual reality games?
asked by Colton 
chemistry
Four solution are prepared and mixed together: Start with 100.0ml of 0.100M BaCl2. Add 50.0ml of 0.100M AgNO3. Add 50.0ml of 0.100M H2So4. Add 250.0ml of 0.100M NH4. Write an equation for any reaction that occurs after each step and calculate the
asked by Sean 
Probability
From a box containing 7 blue, 5 red, 3 green, and 9 yellow marbles, 2 are drawn one at a time without replacing the first marble before the second marble is drawn. Find the probability that one is blue and one is yellow.
asked by Amanda 
Mathematics
Two numbers have thousandths other than zero. Could the difference of these numbers be 5.3? Explain.
asked by David 
Geometry
4.Determine which point does not lie on the graph of the line y=x3 a. (10, 13) b. (1013) c. (8, 11) A? 8. What is the best model for a tabletop? a. plane b. line c. point d. none of these A? 40. If 2 points lie in a plane, the line containing them
asked by mysterychicken 
science
Calculate the molarity of a solution that contains 0.175 mol ZnCl2 in exactly 136 mL of solution.
asked by mollye 
Probability Math
Through a mix up on the production line, 5 defective light bulbs were shipped out with 32 good ones. If 4 are selected at random, what is the probability that at least 3 of them are defective?
asked by Jack 
algebra
Translate this sentence into an equation. 41 is the sum of 16 and Malik's age . use variable m represent Malik's age
asked by Anonymous 
physics
what is the electric field at the position 20 cm from Q2 and 60 cm from Q1? Q2=40 micro coulombs Q1=20 micro coulombs Q2 and Q1 are separated by 80 cm
asked by quinton 
physics
the field just outside a 20 cmradius metal ball is 5x10^(2) N/C outwards. a) what is the flux through the surface of the ball? b) what is the net charge enclosed inside the ball?
asked by marcy 
Health
When conmparing the flow of lymph in the lymphatic system with the flow of blood in the circulatory system. It can be said that the Lymphatic system also A. uses a pump B. contains fluid that travels in only one direction C.Uses valves to prevent baclward
asked by Brenna 
algebra 2
factor 4a cubed+44a squared+120a
asked by scott 
grammar
This insect ia s small durable beast. Is this an adjective in the above sentence?
asked by Dakota 
calculus
Use the shell method to set up and evaluate the integral that gives the volume of the solid generated by revolving the plane region about the xaxis: Y=sqrt(x+2), y=x,y=4
asked by carlton 
algebra
Identify the line(s) of symmetry for the conic section x(y1)^2=2
asked by amber 
World War 1
can someone describe the alliances germany had during World War 1?.. and what would happen if these alliances were broken?
asked by Stephanie 
statistics
For 100 consecutive day frequencies of occurrence of the digits 35,35,30 for the digits 1,2,3 at .05, can you reject the hypothesis that the digits are from a uniform population?
asked by Michael 
algebra
For what value (s) of P could the expression 100 divided by P squared minus 16 NOT be evaluated? Explain how you arrived at your answer?
asked by Miranda 
Math 3
Indicate in standard form the equation of the line passing through the given points. G(4, 6), H(1, 5)
asked by Joseph 
English
1. What will they make in the next meeting? 2. What will they make at the next meeting? (Which one is correct? Do we have to use 'at' or 'in'?)
asked by rfvv 
statistics
For 100 consecutive day frequencies of occurrence of the digits 35,35,30 for the digits 1,2,3 at .05, can you reject the hypothesis that the digits are from a uniform population?
asked by Michael 
math
what is the stopping distance for a car traveling at 40 mph
asked by sonya 
Algebra
Translate into a variable expression. the difference between the square of k and the total of k and 20
asked by Sydney 
chemistry lab
If the bunsen burner does not light after the gas outlet is opened, what might be wrong?
asked by anana 
Physics
Electrons are ejected from a metallic surface with speeds ranging up to 4.50x10^5 m/s when light with a wavelength of 615nm is used. (a) What is the work function of the metal? (b) What is the cutoff frequency for this surface?
asked by genius 
Physics
A 70 g ball moves 45m/s. If its speed is measured to an accuracy of 0.10% what is the minimum uncertainty in its position?
asked by help! 
Chemistry
Hey guys I need help understanding this problem. If you can list why/reasoning for each step of the answer I would appreciate it greatly! Interpret the given equation in terms of relatinve numbers of representative particles, number of moles, and masses of
asked by Kaelan 
Physics
A light beam ( 557.1 nm) illustrates a single slit 0.85mm wide. (a) How far is the screen from the slit if there is 0.85 mm between the first minimum and the central minimum on the screen? (b) what is the width of the central maximum on the screen?
asked by ouii 
Physics
Microwaves (520cm wavelength) enter a long narrow window of a building (which is opaque to microwaves except or the window). If the window is 36 cm wide, what is the distance from the central maximum to the first order minimum of a diffraction patter
asked by hiloo 
Physics
Two stars are 8 light years from earth (a light year is the distance light travels in one year). The 550 nm light from the two stars can be barely distinguished in the diffraction pattern of 90 cm wide single slit. How far apart are the stars?
asked by jackmo 
Physics
A deep space probe moves away from the earth with a speed of 0.75c. An antenna on the probe requires 3.00s probe time to rotate through 1 revolution. How much time is required for 1.00 rev according to an observer on Earth?
asked by britney 
physics
if you were in a spaceship in the furthest depths of space, and you fired a cannonball into space, what force would you have to exert on the ball to keep it moving?
asked by lisa 
Chemistry
Adding water to some chemicals can be dangerous because large amounts of heat are liberated. Which of the following does NOT liberate heat when water is added to it? KNO3 (the answer) NaOH Na CaO H2SO4 I guessed Na simply because it's the only one that's
asked by Confused 
Macbeth
What are ten songs that relate to the character of Macbeth?
asked by Anonymous 
Physics
In its own frame the average pi meson lives 2.60 x 10^8s. Suppose it moves at 0.985c relative to the Earth. According to us, on Earth, what is a pi meson's average lifetime? (b) according to us, what is the pi meson;s average travel distance before
asked by pooja 
geometry
how long is a string reaching from the top of a 20 ft pole to a point 13 ft from the bottom of the pole?
asked by Nicole 
Physics
If astronauts could travel at v=0.89c, we on Earth would say it takes (4.20/0.890)=4.72 years to reach Alpha Centauri, 4.20 light years away. The astronaut would disagree. (a) How much time passes on the astronaut's clocks? (b) What is the distance to
asked by LUMBA 
Math
What is the total surface area of the inside and outside of a container in the shape of a rectangular prism with length of 5 meters, width of 3 meters, and height of 2.2 meters?
asked by Johon 
math
change .7 to hundreds
asked by matthew 
physics
suppose roy is driving his car at 60 mph and is not wearing his seatbelt, he is a bit sleepy,and dozes off for a second, and crashes into a brick wall.he is thrown forward through the windshield.is there a force that pushes roy through the window?if so,
asked by lisa 
APUSH
In 1850 the South was in good political shape. Each of the following descriptions explains why that was true except? A. Zachary Taylor, the president, was a southern slaveowner B. The majority of the presidential cabinet were southerners C. Most of the
asked by Matt 
geometry
Two triangles each have adjacent sides of length 120 feet and 180 feet. The first triangle has an angle between the two sides of 40 degrees, while the second triangle has an angle between the two sides of 60 degrees. What is the approximate difference
asked by jordan 
physics
many automobile passengers suffer neck injuries when struck by cars from behind. how does newtons law of inertia apply here?why would a headrest help guard against whiplash
asked by lisa 
ALGEBRA
Find the amount of interest and the monthly payment for the loan. Purchase a car for $42,800 at 2.4% addon rate for 5 years. (Round your answers to the nearest cent.) $ interest $ per month
asked by Mike 
ALGEBRA
A car dealer will sell you a used car for $8,672 with $672 down and payments of $157.66 per month for 60 months. What is the APR? (Use the formula on page 156. Round each answer to the nearest tenth.)
asked by Mike 
sinki
rectangular cake pans x and y are similar. the ratio of the width of pan x to the width of pan y is 3:5. the length of pan x is 12 inches and its width is 6 inches. what is the perimeter if pan y?
asked by yoko 
Data Management
A box contains 14 yellow, 6 green, 10 purple, and 12 red candies jumbled together. What is the expected number of red candies among 5 candies poured from the box?
asked by Joshua 
math
Write an algebraic expression. Tell what the variable represents. Callie paid money to the kennel to board her cat for 13 days.
asked by stephanie 
MathAlgebra 1
The bed of a truck holds 1920 cubical boxes that are 1 foot on each side. If the height of the truck bed is 10 feet, which is a possible combination for the length & width of the truck bed? Answers: a.) 20feet, 9feet b.) 18feet, 12feet c.) 24feet, 8feet
asked by Taylor Leigh 
science
what principle would you be applying if you found a hair on a filing cabinet
asked by Charmayne 
Math
Can 1/2 ever be greater than 1/4. Why.
asked by DANIEL 
Data Management
Verify that the expression formula for a hypergeometric distribution gives the same result as the general equation for the expectation of any probability distribution.
asked by Joshua 
College Algebra/Geometry
What size should be the frame be? Suppose an artist has a circular picture with a diameter 6 inches which she wishes to frame by a uniform width frame with covers 1/2 inch width uniformity of the painting and has total area equal to that of the exposed
asked by Fred 
Data Management
Estimate the population size of a bird species if in 100 sightings along a migration path, 25 were ringed, and it is known that 500 of the birds had been ringed before the sightings?
asked by Joshua 
social studies
the main theme of the renaissance was the focus on individual uniqueness and worth over the church. _____________
asked by Velma 
College Algebra
The parking lot is 25 by 40 feet. The owner wants to enlage the parking lot by paving an equal width strip on the north side and east side of the lot, sot hat the new lot will be twice the area of the old one. Find the equation which has as a root the
asked by Jorge 
Chemistry
I don't quite understand why this isn't balanced and what we'd have to do to balance it and why. If someone could explain indepth I would appreciate it. Balance this equation: C2H5OH(l) + O2(g) >>>>> CO2(g) +H20(g)
asked by Kaelan 
chemistry
don't quite understand why this isn't balanced and what we'd have to do to balance it and why. If someone could explain indepth I would appreciate it. Balance this equation: C2H5OH(l) + O2(g) >>>>> CO2(g) +H20(g) Show that the balanced equation obeys the
asked by Kaelan 
soc 120
Give an example of something that one culture might regard as a virtue that another culture might not. Explain why this could lead to relativism.
asked by tiffany 
English
Where do commas belong in the following sentences? With Barton's help readers the American Red Cross Society was formed in 1881. Yes she treated wounded German and Allied soldiers alike.
asked by Karen 
geometry
a playground is 50yd by 50 yd amy walked across the playground from one corner to the opposite corner. how far did she walk? i got : 5000yd #2 a 70 ft ladder is mounted 10 ft above the ground on a fire truck. the bottom of the ladder is 40 ft from the wall
asked by marko 
Math
What is 0.5 to the tenth power, as a fraction? a.k.a. 0.0009765625 as a fraction
asked by Annie 
APUSH PLZ HELP!
In 1850 the South was in good political shape. Each of the following descriptions explains why that was true except? A. Zachary Taylor, the president, was a southern slaveowner B. The majority of the presidential cabinet were southerners C. Most of the
asked by Matt 
english
Does this sentence sound good or does it need a comma? The physical aspect of playing an instrument can refer to strumming a guitar with a pick or blowing air into a flute.
asked by Jon 
math
Ten different numbers are ordered from least to greatest. The median of the numbers is 12. Three additional numbers are added to the group: 8, 15, and 16. What is the resulting effect on the median?
asked by sasha 
english
Identifying and Replacing Verbs. In each sentence, underline the verb or verb phrase, if it is an action verb rewrite it with another action verb. If it is linking just leave it. I got 8 out of 6. First sentence is 1. Owls can turn their heads almost all
asked by Michael 
pyhsical sciencve
In Rutherford's gold foil experiment the alpha particles pass through which part of the atom? A. the nucleus B. the proton shield C. the valence electron shell D. the electron cloud
asked by m, 
Earth & Space Science
Could someone please tell me what do you do in this class. I'm going to be a senior next year [High School] , & thinking of taking this class. And also if someone could tell me where to find notes for that class. THANK YOU!
asked by DAN 
Calculus Graph help!!!
I need help with a calulus graph and figuring out its equation but it wont let me post the picture of the graphs here. so will someone who understands Calculus and their graphs super well please email me k m k underscore horse lover at hot mail dot com. no
asked by kelsey 
math
what is 9 5/6 plus 1 23/30
asked by Hayden 
math
what is 6 minus 1 2/3?
asked by Hayden 
Math
8. Isabel found three pieces of cable in her tool drawer. Here are their lengths (in meters). 10.43 ,13.2 ,9 What is the total length of the three pieces? 9. Lashonda needs to drive 20 miles to work. So far, she has driven 2.6 miles. How many more miles
asked by Kiki Wilson 
math
18 Estimate 8128 /18 by first rounding each number so that it has only nonzero digit. 20. Find the digits in the tens place, in the tenths place, and in the ten thousandths place for the following number. 465.2587 21. Round 0.681 to the nearest tenth. 22.
asked by Faye 
English answer check
15. Which of the following sentences uses the passive voice? Almost every night Frances sang her son the same lovely lullaby. Because of the light color, Jason gave the room a second coat of paint. Have you ever been taken to the state fair? Despite her
asked by kelsey 
math
for the equation y = 1x  25, will the value of y increase or decrease as x increases?
asked by chris 
Math
what is the result when 2x^2+3xy6 is subtracted from x^27xy+2? show your work. please help me!
asked by Sam 
Word problem
To participate in a baseball league, the required equipment for each player is a glove, a hat, and a pair of cleats. A glove costs $48.95 , a hat costs $17.95 , and a pair of cleats costs $ 29.95 . What is the total cost for a team of players?
asked by Faye 
Math
multiply: a)(2x+5)(2x5) b) 4x^3(6x3x^4) show your work. please help me!!
asked by Sam 
Math
What is the result when (4x^25x+7) is added to (x^23x6)? show your work. PLEASE HELP ME!!
asked by Sam 
Math
what is 18x^5+3x^3+6x after it is divided by 3x? show your work. PLEASE HELP MEEE
asked by Sam 
english/check please
Add an interjection to each of these sentences. Be sure to punctuate correctly. 1 Isn't that beautiful?  Ah! isn't that beautiful ? 2We're having a test .  My goodness ! Were having a test ! 3 That hurts.  Ouch ! That hurts ! 4 I ripped my best
asked by joe 
History
Need help finding old newspaper articles on lapd swat please. LAPD SWAT was created in 1968, so i need an article that is from 19681982. I only found one and i am having a lot of trouble finding another one. Please if you know any online newspaper article
asked by Anonymous 
Social Studies
Who and when was nylon invented? 1935 by Wallace Carothers?
asked by Colton 
English
What is the verb or verb phrase in the sentence: Her mother, Naomi, is a tax attorney with her own business.
asked by ROSIE 
algebra
how do i solve the quadratic equation of 991+5 please help me i'm stuck with this problem.
asked by tiffani 
PreCalc
for the conic y=5x^240x+78 find an equation in standard form and its vertex, focus, and directrix
asked by Zoey 
Algebra 1
3x + 4y = 2 and 2x  3y = 10
asked by Liz 
MATH
When adding or subtacting polynomials, what is very important to remember? PLEASE HELP
asked by Sam 
Chemistry
A 1.0m solution of LiCl decreases the freezing point of water more than a .10 m solution of LiCl. Explain why based on colligative properties. I know that the 1.0m solution would decrease it more, but cannot explain why. Any help is appreciated!
asked by Anonymous 
accounting
On January 1, 2008 Touring company agreed to buy some equipment from Jones Company. Touring company signed a note,agreeing to pay Jones company $500,000 for the equipment on December 31, 2010. The market rate of interest for this note was 10%. a. Prepare
asked by Jamie 
science
what makes up a watershed
asked by maureen 
geometry
a playground is 50yd by 50 yd amy walked across the playground from one corner to the opposite corner. how far did she walk? i got : 100 yd is that right
asked by marko 
Science
A simple machine with a wedge at one end, an inclined plane wrapped around an axle in the middle, and a wheel at the other end is a ?
asked by Griffin 
Science
A simple machine with a wedge at one end, an inclined plane wrapped around an axle in the middle, and a wheel at the other end is a ?
asked by Griffin 
Math
multiply: 4x^3(6x3x^4) show your work. please help me!!
asked by Sam 
english/check
"About Russell" 28. Russell’s family encourages him to seek help for his problems. true false 29. Russell ends up a)working with his father as a real estate agent. b)collecting and redeeming soda bottles. c)begging on the street. d)teaching math in high
asked by nevaeh 
math
can you help me with this please 1912+2(21)+11(5)
asked by miss c 
math
if 82 people respond to a survey, how many read from 4 to 18 books?
asked by Help! :( 
calculus
As a hardworking student, plagued by too much homework, you spend all night doing math homework. By 6am, you imagine yourself to be a region bounded by y=5x2 x=0 x=3 y=0 As you grow more and more tired, the world begins to spin around you. However,
asked by ayee 
finite math
6 red balls, 5 black balls, 4 green balls, what is probability, 1 red ball and one black ball pick, with replacing ball
asked by cindy 
Finance
Answers for a 10 year us treasury bond has a 3.50 % interest rate, while a same maturity corporate bond has a 5.25 % interest rate. Real interest rates and inflation rate expectations would be for the two bonds. if default risk premium of 1.50 percentage
asked by Ann 
math
For the sequence 0,3,8,15,24,35.... find a formula for tsubn in terms of n.
asked by Kate 
math
the sum of 3 numbers is 49. the second number is twice the 1st, and the third is 1 less than the second. find the numbers
asked by /all 
chemistry
If 33.4 mL of the base are required to neutralize 11.1 mL of hydrobromic acid, what is the molarity of the potassium hydroxide solution?
asked by Anonymous