Questions Asked on
October 8, 2011

Chemistry
How many grams of dry NH4Cl need to be added to 2.10L of a 0.600M solution of ammonia,NH3 , to prepare a buffer solution that has a pH of 9.00? Kb for ammonia is 1.8x10^5. I just wanted to make sure I dd this write, can you please check my work? Thank
asked by Jessica 
Physics
Let vector B = 8.8 m, 75 degrees counterclockwise from the vertical. a) Find the x and ycomponents of vector B in the normal coordinate system (where x is a horizontal line and y is a vertical line...both intersect each other). b) Find the x and
asked by Beth 
Physics
a 2.5kg block initially at rest on horizontal surface. A horizontal force F of magnitude 6N and a vertical force P are the applied to the block. The coefficients of friction for the block and surface are Ms=0.4 and Mk=0.25.Determine the magnitude of the
asked by Fatima 
Calculus
If a rock is thrown upward on the planet Mars with a velocity of 14 m/s, its height in meters t seconds later is given by y = 14t − 1.86t^2. Estimate the instantaneous velocity when t = 1.
asked by Katy 
chemistry
consider the reaction, 2Al(OH)3+3H2SO4>Al2(SO4)3+6H2O a. Given that 152g of H2SO4 reacts with 234g of Al(OH)3 Howmany grams of Al2(SO4)3 will be theoretical generated? b. which of the reactants is the limiting reagent? c. If the actuall yield was 135 g
asked by lucky 
College Physics
Electronics and inhabitants of the International Space Station generate a significant amount of thermal energy that the station must get rid of. The only way that the station can exhaust thermal energy is by radiation, which it does using thin, 2.2
asked by Set5 
Calculus
If a rock is thrown upward on the planet Mars with a velocity of 7 m/s, its height in meters t seconds later is given by y = 7t − 1.86t2. (Round your answers to two decimal places.) (a) Find the average velocity over the given time intervals. (i) [1, 2]
asked by Anonymous 
Physics
A 2 kg ball of putty moving to the right at 3m/s has a headon inelastic collision with a 1 kg ball of putty moving to the left at 3m/s. What is the final magnitude and direction of the velocity of the stuck together balls after the collision?
asked by Nikki 
Algebra
Jake scored x points in the first basketball game. He scored 2 fewer points in the next game. His teammate, Jack, scored 2y points in the first game and 4 more than twice as many points in the next game. Write and simplify an expression for the total
asked by gms 
NEWTON'S LAWS (FORCES)
Two boxes, A and B, are connected to each end of a light vertical rope, as shown in the following figure. A constant upward force 78.0N is applied to box A . Starting from rest, box B descends 12.3 m in 3.80s . The tension in the rope connecting the two
asked by Mar 
physics
Two boxes, A and B, are connected to each end of a light vertical rope, as shown in the following figure. A constant upward force 78.0N is applied to box A . Starting from rest, box B descends 12.3 m in 3.80s . The tension in the rope connecting the two
asked by Mar 
physics
A quaterback throws the football to a stationary receiver who is 31.5m down the field. If the football is thrown at an initial angle of 40.0 degrees to the ground, at what initial speed must the quaterback throw the ball for it to reach the receiver? What
asked by rose 
Chemistry
Assuming the sample is pure sodium sulfate, how many mL of 5% BaCl2.2H20 solution would be required to precipitate the sulfate. Density of barium shloride solution of 1.00 g/mL.
asked by Mika 
Calculus
f a rock is thrown upward on the planet Mars with a velocity of 7 m/s, its height in meters t seconds later is given by y = 7t − 1.86t^2. (Round your answers to two decimal places.) Estimate the instantaneous velocity when t = 1.
asked by Chris 
calculus
The given curve is rotated about the yaxis. Find the area of the resulting surface. y = 1/4x^2 − 1/2ln x, 4 ≤ x ≤ 5 The answer is supposed to be 64/3*pi
asked by Caroline 
geometry
A table is set for dinner. Can the legs of the table and the top of the table lie in parallel planes? Why or why not?
asked by Heather 
maths
A broken clover has 2 leaves, a normal clover has 3 leaves and a lucky clover has 4 leaves. In a bunch of these clovers , there are twice as many normal clovers as broken clovers and 5 times as many normal clovers as lucky clovers. The bunch has a total of
asked by tori 
Physical Science
A certain metal surface emits electrons when light is shone on it. (a)How can the number of electrons per second be increased? (b) How can the energies of the electrons be increased?
asked by Reagan 
Chem
The field of nanotechnology offers some intriguing possibilities, such as the creation of fibers one atom wide. Suppose you were able to string together 1.00 mol Ag atoms, each of radius 144 pm, into one of these fibers by encapsulating them in carbon
asked by Erica 
math
what is the value of the 8 in 387?
asked by kina 
Calculus
Find the constant c so that lim [x^2 + x + c]/[x^2  5x + 6] exists. x>3 For that value of c, determine the limit. (Hint: Find the value of c for which x  3 is a factor of the numerator.)
asked by Blue 
College Chemistry
Plaster of Paris is the compound calcium sulfate hemihydrate, CaSO4*1/2H2O What mass of water is liberated when a 2.763 gram sample is heated to constant mass? The sample is 2.763 grams How much of the 2.763 gram sample is water? I need an amount in grams.
asked by Roy 
precal
A contractor needs to know the height of a building to estimate the cost of a job. From a point 84 feet away from the base of the building, the angle of elevation to the top of the building is found to be 44 degrees and 23'. Find the height of the
asked by Antonia 
Chemistry
If performing a gravimetric sulfate experiment and you use ordinary filter paper instead of ashless filter paper, would results be too high or too low? If I'm trying to calculate percentage of sulfate in a sample and I used ordinary filter paper, the paper
asked by Kenji 
Physics
A)Two point charges, +3.90 ìC and 7.50 ìC, are separated by 3.30 m. What is the electric potential midway between them? B)The drawing shows four point charges. The value of q is 1.3 ìC, and the distance d is 0.95 m. Find the total potential at the
asked by Kristi 
Linear equations
Please help me solve this problem Find an equation for the line perpendicular to 6x+2y=2 having the same yintercept as 4x3y=6
asked by Joyce 
physics
this is my last one i couldn't find the answer please help ??? Two workers pull horizontally on a heavy box, but one pulls twice as hard as the other. The larger pull is directed at 25.0 o west of north, and the resultant of these two pulls is 400.0 N
asked by zooz 
statistics
Suppose that contamination particle size in micrometers can be modeled as f(x) = 2x−3 for 1 < x. a. Show that f(x) is a probability density function. b. Find the mean X.
asked by latha 
math
How many dollars is 200 quarters, 150 dimes, and 300 pennies
asked by mooooooooooop 
Statisticsconfused
A candidate for a political office claims that he will win the election. A poll is conducted, and 35 of 150 voters indicate that they will vote for the candidate, 100 voters indicate that they will vote for his opponent, and 15 voters are undecided. a.
asked by Jen 
physics
A 62.0kg runner has a speed of 4.90 m/s at one instant during a longdistance event.
asked by nery 
College Chemistry
Plaster of Paris is the compound calcium sulfate hemihydrate, CaSO4*1/2H2O What mass of water is liberated when a 2.763 gram sample is heated to constant mass?
asked by Roy 
Chem
Calculate the amount (in moles) of H₂O in 2.00g of Na₂CO₃ ⋅ 10H₂O. Thanks so much!!
asked by Erica 
Finance
3) Which of the following statements is true concerning home equity loans? A. Home equity loans are generally installment loans with a 515 year term. B. Home equity loan interest is never taxdeductible. C. Home equity loans are secured by all of the
asked by Anonymous 
Economics
The schedule below shows the level of output that can be produced using different levels of input. A unit of input costs $80 and the fixed costs of running your business are $50. Input Output 0 0 1 2 2 6 3 9 4 11 5 12 1. What is your AVC of producing 11
asked by John Doe 
english
He suffered an injury to his knee, and this is causing him pain and discomfort. Help find the verbs
asked by bec 
College Physics
In this problem you will estimate the heat lost by a typical house, assuming that the temperature inside is T(in) = 20 degrees celcius and the temperature outside is T(out) = 0 degrees celcius. The walls have fiberglass insulation, which dominates the heat
asked by Becky 
physics
A particle moving with uniform acceleration in a straight line was first observed to be moving at 4.5 m/s. After 10 sec, it was moving at 6.8 m/s. What is its acceleration?
asked by Selina 
PreCalc
Could someone show me how to solve these two problemsI have 10 of each kind to do this weekend and I'm really lost 1. Find product of 8(cos pi/2 + i sin pi/2) * 1/2(cos pi/6 + i sin pi/6) 2. Same problem but find quotient instead of product Please someone
asked by Tammie 
P Science
If Planck's constant were smaller than it is, would quantum phenomena be more or less conspicuous than they are now?
asked by Brann 
Chem
Calculate the amount (in moles) of Cu²+ ions in 3.00g of CuBr₂. Thank you so much for the help!!
asked by Erica 
algebra
write an expression that has five terms and simplifies to 5m3 + 4n. Please give me the steps
asked by chris 
Statistics
Describe whether the following study would most likely be “observational” or “experimental”, and why it would be so. * Mystery shoppers monitor the preferences at a shopping mall
asked by Jen 
physics 12
An 884 kg satellite in orbit around a planet has a gravitational potential energy of 5.44*10^10 J. The orbital radius of the satellite is 8.52*10^6 m and its speed is 7.84*10^3 m/s. A) What is the mass of the planet? B) What is the kinetic energy of the
asked by adrian 
algebra
the function W(d)=0.112d approximates the amount in centimeters of water that results from d cm of snow melting. Find the amount of water that results from snow melting from depths of 18 cm, 49 cm, and 98 cm. I am having problems figuring this out and I
asked by helen 
Physics
A 0.45kg shuffleboard puck is given an initial velocity down the playing surface of 4.5 m/s. If the coefficient of friction between the puck and the surface is 0.20, how far will the puck slide before coming to rest?
asked by anonymous 
physics 12
A spacecraft of mass 470 kg rests on the surface of an asteroid of radius 1400 m and mass 2.0*10^12. How much energy must be expended so that the spacecraft may rise to a height of 2800 m above the surface of the asteroid? Thanks.
asked by roy 
Statisticsconfused
A candidate for a political office claims that he will win the election. A poll is conducted, and 35 of 150 voters indicate that they will vote for the candidate, 100 voters indicate that they will vote for his opponent, and 15 voters are undecided. a.
asked by Jen 
Chemistry
I am really stuck, I have tried to look these up everywhere and I keep getting different answers. I have to find the balanced equations for: Magnesium + Citric acid Zinc + citric acid Copper + Citric acid Manganese + Citric acid If I can have some help it
asked by Franky 
CIS 115
I need help with the visual logic flowchart for the following problem: A local deli sells lunch value meals that consist of a sandwich, soup and a drink. The price of each meal depends on the actual items ordered. Write a program that asks the cashier to
asked by Thermonf 
english
suki and lee wake up earl this morning . They want to go to grandma's house in the city.first they put on their clothes,then they ate their breakfast.they will ride with their parents in the car to grandma's house.they will take for her some food to eat.
asked by ramy 
mathematics
1. 3/(x+2)+4/(x5)=2/3 2. 5/(3x+8)=4/(3x8)
asked by diana 
Microeconomics
Baseballs cost $5 and baseball gloves cost $20. Assume you have $100 total to spend on these items. Construct a table similar to the one on page 158. What is the point, based on the Equimarginal Rule, that has equal marginal benefit (or the closest) for
asked by Jennifer 
accounting
On January 2, 2007, a company issued $100,000 of 5%, 10 year bonds. The bonds will mature in ten years. The bonds were sold for for 95% (or .95 of par) and will pay interest semiannually, or twice a year, on June 30 and Dec 31. Record the journal entries
asked by Renee 
physics
You are given a vector in the plane that has a magnitude of 86.0 units and a component of 30.0 units. What are the two possibilities for its component?
asked by dj 
algebra
the function W(d)=0.112d approximates the amount in centimeters of water that results from d cm of snow melting. Find the amount of water that results from snow melting from depths of 18 cm, 49 cm, and 98 cm. I am having problems figuring this out and I
asked by helen 
physicssssss
A block with mass m = 14 kg rests on a frictionless table and is accelerated by a spring with spring constant k = 4545 N/m after being compressed a distance x1 = 0.515 m from the spring’s unstretched length. The floor is frictionless except for a rough
asked by aaa 
physicsssss
A mass m = 4 kg hangs on the end of a massless rope L = 2.02 m long. The pendulum is held horizontal and released from rest. 1)How fast is the mass moving at the bottom of its path? 2)What is the magnitude of the tension in the string at the bottom of the
asked by aaa 
physics
A proton moves from a location where V = 70 V to a spot where V = 31 V. (a) What is the change in the proton's kinetic energy? J (b) If we replace the proton with an electron, what is the change in kinetic energy?
asked by anthony 
Calculus
What is the limit of this function as x approaches 0? cos(x)  1 / x From what I gather, the limit is equal to 0, since on the right, the function approaches from negative values close to zero and on the left, it approaches 0 with positive values close to
asked by Mishaka 
calculus
How many roots does the graph of this function have? 4x^4  4^x I believe that it either has two or three roots.
asked by Mishaka 
algebra
Simplify each expression. Justify your steps using the Commutative, Associative and Distributive Properties when necessary 8k2 + 4k  3k2 + 3^2  k + 5 Please let me
asked by chris 
Chemistry
An aqueous solution of copper (I) chloride is 15.7% by mass copper (I) chloride. Copper (I) is 35.8% by mass chlorine. If the solution has a density of 1.045 g/cm³, how many gallons of solution contain 2.3 kg of copper? Trying to help my son study. Thank
asked by Mom 
Biomechanics
XY coordinates of the right toe of a soccer kick performer are Frame 20: (2.62, 0.99) Frame 14: (2,34, 0.16). How far did the toe travel in the upward direction between frames 14 and 20? How fast did the toe travel in upward direction between frames 14 and
asked by Esther 
physics
Vector is 6.3 units long and points along the negative axis. Vector is 9.0 units long and points at 55 to the positive axis. 1 What are the and components of vector ? 2What are the and components of vector ? 3Determine the magnitude of the sum .
asked by simantha 
Math....please help
A candidate for a political office claims that he will win the election. A poll is conducted, and 35 of 150 voters indicate that they will vote for the candidate, 100 voters indicate that they will vote for his opponent, and 15 voters are undecided. a.
asked by Jen 
Science (Lab)
So I have yo do a Lab for science (this is our very first lab, well we did a second one) & I really need help. This ia fictional lab experiment not a real one we are not really doing the experiment. Me 7 my group was doing it together we just have to do
asked by Laruen 
Business Law
Sam owns an acre of land on Red River. The government dams the river. A lake forms behind the dam, covering Sam's land. Does the government owe Sam anything? I don't want you to give me the answer but maybe just a reference where I could see the law on
asked by Ashley 
physics
Vector (V1) is 6.3 units long and points along the negative (X) axis. Vector(V2) is 9.0 units long and points at 55 degree to the positive (X)axis. 1 What are the (X) and (Y) components of (V1) vector ? 2What are the (X) and (Y) components of(V2) vector
asked by s 
Chemistry
An aqueous solution of copper (I) chloride is 15.7% by mass copper (I) chloride. Copper (I) is 35.8% by mass chlorine. If the solution has a density of 1.045 g/cm³, how many gallons of solution contain 2.3 kg of copper?
asked by Matthew 
physics
Two particles with Q1 = 40 µC and Q2 = 87 µC are initially separated by a distance of 2.6 m and then brought closer together so that the final separation is 1.7 m. What is the change in the electric potential energy?
asked by anthony 
biology
Are the categories animallike, plantlike, or funguslike useful in classifying protists? Please explain.
asked by BOO! 
maths
how many 3digit numbers have exactly 2 digits that are the same?
asked by tori 
mba
Find the maximum and minimum values of the following function. 8x3 – 75x2 + 150x
asked by anil 
math
simplify the following by adding like terms 46m+10n56n+9m
asked by mark 
calculus
What is the limit of the function as x approaches infinity? 4x^4  4^x Would the limit be positive infinity or negative infinity?
asked by Mishaka 
math
If 1 is less than a number is divided by 5 less than twice the number the result is 21over39 wat is the number? plsssssssssss answer!
asked by hi 
calculus
What is the limit of the function as x approaches infinity? (x^4  7x + 9) / (4 + 5x + x^3) From what I know, the limit should be infinity since the greater exponent is in the numerator. However, I am only given the options: 0, (1/4), 1, 4, or Does not
asked by Mishaka 
algebra
In a reallife situation, to model the distance x and the height of hitting a baseball y as in: y = ax^2 + bx + c 1. When dealing with the initial height of the ball, what is happening when x = 0? Is it that the ball has not yet traveled any distance? 2.
asked by Anil 
Psychology
When a student took her psychology quiz, she did badly on the essay question. Ealier, she had written a good practic essay on this concept. The failure of which memory process led to her poor essay performance? A) Encoding B) Retrieval C) Repression D)
asked by Tisha 
american history
Who belief in expansionism led to the building of the panama canal
asked by Amy 
math
the function it described by h(x)2.75x+71.48 can be used to predict the humerus (the bone from the womens elbow to the shoulder) is x cm long predict the height of a womens whose humerus is 39 cm long
asked by howmoney 
physics
A car accelerates uniformly from rest to a speed of 55 km/h (15 m/s) in 14 s. Find the distance the car travels during this time.
asked by Girl 
Physics
Two point charges, +3.90 ìC and 7.50 ìC, are separated by 3.30 m. What is the electric potential midway between them?
asked by Kristi 
Science
What is the wavelength and the frequency of a 50MeV gamma ray photon.
asked by Brann 
Physics
Let vector A = 4i^ + 4j^, vector B = 2i^  5j^, and vector F = vector A  5(vector B). a) Write vector F in component form. vector F = ? b) What is the magnitude of vector F? F = ? c) What is the direction of vector F? theta = ? Thank you!
asked by Sara 
Health
What is the average teen suicide rate in the state of New York, as well as the top five reasons (in order) for teen suicides there? Thanks :)
asked by Nikki 
Physical Science
What kind of experiment might you use to distinguish between a gamma ray of wavelength 10^11m and an electron whose de Brogile wavenlength is also 10^11m?
asked by Brann 
physicssss
A mass m = 73 kg slides on a frictionless track that has a drop, followed by a looptheloop with radius R = 17.9 m and finally a flat straight section at the same height as the center of the loop (17.9 m off the ground). Since the mass would not make it
asked by aaa 
Business English
Which is an effective strategy for ending an informative letter to a new client? A. stress that the reader is welcome to call anytime if more information is needed. B. Refer to your company's future relationship with the readee's organization. c. Mention
asked by Sheliah 
Chemistry
Thank you so much for the help on my other question!!! An alloy (solution of metals) is 80% by volume iron. The rest is aluminum. Aluminum has a density of 2.70 g/cm³, and iron's is 7.87 g/cm³. A block of alloy measures 2.0 ft. wide and 3.0 ft. long. If
asked by Matthew 
College biology
In testing synaptic transmission, you found that there were 300 failures in 1000 trails of stimulating a presynaptic neuron. The average EPSP size was .7 mV +/ .2mV (mean +/ SD), and the average 'mini' EPSP size was .6mV +/ .1mV. Does the synapse obey
asked by Joanne 
physics
a gun fires a shell with a speed of 315m/s. Neglecting the effects of air resistance, calculate the maximum range of this gun
asked by Cam 
Accounting
I have added Below my balance sheet and income statement now the statement of owners equity is the beginning capital 28,2800 plus the net income 21,550 which is 49,750 less withdrawals 5,000 equals 44,750 which does not equal my assets. I cannot figure out
asked by Christine 
Physics
Given the vector from the pivot point to the force and the magnitude of the force. 1.How would one find the angle of the force? 2.How would one find the torque? 3.How would one calculate the maximum/minimum torque?
asked by Anonymous 
GCSEenviromental studies
please could someone help me answer theses questions. 1)why is Braunton Burrows in North Devon a biosphere reserve? 2)the kind of habitats that are present in Braunton Burrows 3)what activities are carried out at in the reserve 4)How and why the reserve is
asked by GEMMA KINGSLEY 
physical
What is the wavelenght if the distance covered by a wave in 14 succesive trough is 25cm
asked by Anonymous 
Calculus
Find lim [f(x+h)f(x)]/h h>0 f(x) = 2  5x + x^2
asked by Nemo 
physical education
in what all tips does physical education help?
asked by divya 
algebra
why are these equations poor models of hitting a baseball: y= 0.002x(x433.1) I get maximums of (216,93). Other problems' maximums are in the (220, 100)range. So are they poor models because the distance and heights are unreasonable? 2) Why is the
asked by Anil 
Calculus
Find the indicated limits. If the limit does not exist, so state, or use the symbol + ∞ or  ∞. f(x) = { 2  x if x ≤ 3 { 1 + 3x  x^2 if x > 3 a) lim 3+ f(x) x>3 b) lim 3 f(x) x>3 c) lim f(x) x>3 d) lim ∞ f(x) x>3 e) lim ∞ f(x) x>3
asked by Blue 
Calculus
Find all points of discontinuity f(x) = [x^2 + 5x  2]/ [x^2  9]
asked by Alex 
Calculus
If f(x) = { √2x x < 2 { x^3 + k(x+1) x ≥ 2 determine the value of the constant k for which lim exists. x>2
asked by Alex 
geometry
how do you justify if three lenghs make a triangle?
asked by ashley 
Statistics
Given IQ~N(100, 256) find P(IQ > 115). Be certain to set your calculator to FLOAT 4 to match my answer exactly. I need to know how to figure this out on my calculator.... no one has taught me how to use my calc and I am so confused.... someone please help!
asked by David 
mathematics
Simplify the expressions 1.) Cos^2x/sin^2x + csc x sin x 2.) (Sec x +1)(sec x  1)
asked by Tonie 
Chemistry
Element X has three istotopes, X⁹⁵, X⁹⁶, and X⁹⁸. Element X has an atomic mass of 96.344u. If X98 has a mass of 98.0001u and an abundance of 19.8%, what are the abundances of X96 (mass of 95.9988u) and X95 (mass of 95.0011u)?
asked by Laurie 
math
Prove that the equation Is an identity. Sec^4x  Tan^4x = Sec^2x + Tan^2x
asked by Rosilyn 
Home insurance
Disability insurance is designed to replace: A.Damageed property B.loss or damage to property C.money damages awarded in a law suit against you D.lost income i got B.
asked by ciara 
physics
Vector is 6.3 units long and points along the negative axis. Vector is 9.0 units long and points at 55 to the positive axis. 1 What are the and components of vector ? 2What are the and components of vector ? 3Determine the magnitude of the sum .
asked by simantha 
Statistics
Each year, thousands of college seniors take the Graduate Record Examination (GRE). Assume the scores are transformed so they have a mean of 600 and a standard deviation of 150. Furthermore, the scores are known to be normally distributed. Determine the
asked by Emily 
Physics
A person walks 28.2◦ north of east for 3.33 km. Another person walks due north, then due east to arrive at the same location. How far due north would this person walk?
asked by Louis 
REPORT HELP ME
I want to know what needs to create a report on the contents of the subject problem solving .. lecture want us to write report every time after class runs out .. report on the subject that we learned during class that day ..so I want know what needs to be
asked by alya 
math
Simplify the expression. 1.) (Sec x +1)(sec x  1)
asked by CeCe 
C1
THE LINE V PASSES THROUGH THE POINTS(5,3)&(7,3)&THE LINE W PASSES THROUGH THE POINTS (2,4)&(4,2).THE LINE V&W INTERSECT AT THE POINT A.WORK OUT THE COORDINATES OF THE POINT A
asked by MEENU 
world problem MATH
the temperateure of Mars reaches 27 degree celsius during the day and 125 degree celsius at night. What is the average temperature? can youhelp me do this problem i am not sure.
asked by Marko 
Algebra
How do I solve these equations? I was out sick a whole week :( please no direct answers. I want to know the process as well. a=5 4/5x=20 2/3y=18 x/3=18 Please note that the / are fractions. Thank you so much in advance!! :)
asked by Nikki 
Math  fractions
I have to find the area of a rectangle in fraction measurements. Area = L*W = 9/16 yds. * 14/15 yds.
asked by Alex L. 
Math
Expressions please help p less than 5 p greater than 10 9 times the sum of p and 6
asked by John 
curriculum development project
My topic is community and I have to form a paragraph from the 10 activity plans such as math, science literacy, dramatic play, language and literature, puppets, music and movement, sensory centers, art, science and social studies. the paragraph consist of
asked by Maryann 
Math
Please show work. 9 1/10 + 7 2/5
asked by John 
SHSATURGENT
Can someone please give me a link for a website or websites that provide shsat student handbooksother than 20112012 and 20102011. thank soo much in advance i only have a few more weeks to study and have no resouces please.
asked by samantha 
organic chemistry
(x/15)/[(1.5x)/45]=5.8 how do I move these around to find x partition coefficient equation
asked by Anonymous 
Calculus
Find the points of discontinuity. f(x) = { 16/x^2 if x ≥ 2 { 3x  2 if x < 2
asked by Nemo 
algebra
So if the distance and height are reachable, why are these equations poor models of hitting a baseball: y = 0.5x^2 + 216x + 3 y = 0.002x^2 + 0.879x + 3.981 y = 0.002x^2 + 0.8732x  3.981
asked by Anil 
business communications
3. To assist in evaluating written communications skills in the employment process, many managers include as a requirement: (Points : 5) handwritten applications. essaytype questions. application forms. portfolios.
asked by Anonymous 
chemical
The vapor pressure of mercury at 77¢K is 0.0018 mmHg. The atomic weight of mercury is 200.6 g/mole. If the mercury vapor were allowed to reach equilibrium at this temperature in an enclosed space, what would be the mercury vapor concentration in the
asked by steve 
Applications of Multipication
A convenience store sells 1650 items where 12/25 of the items are junk food. How many of the items are junk food?
asked by Alex L. 
Chemistry
If 0.1g of Unknown chloride reacts with 0.164 g of AgNo3 to form 0.05g of Agcl and unknown Nitrate.How do we find Unknown chloride?
asked by Veena 
math
x+5y=1 2x+4y=4
asked by donald 
math
33 1/3% of what number is 26.5?
asked by juana 
business communication
9. "Basic essentials" is an example of a: (Points : 5) cliché. redundancy. doublet. trite phrase
asked by Anonymous 
math
66 2/3% of what number is 76.2
asked by juana 
math
$63 is what % of $84?
asked by juana 
math
what % of 480 is 270?
asked by juana 
university studies
How have you used these actions to solve problems in your daily life? How are critical thinking skills in your daily life and in your academic life similar? How are they different?
asked by us 101 week 9 DQ 3 
College biology
In testing synaptic transmission, you found that there were 300 failures in 1000 trails of stimulating a presynaptic neuron. The average EPSP size was .7 mV +/ .2mV (mean +/ SD), and the average 'mini' EPSP size was .6mV +/ .1mV. Does the synapse obey
asked by J Jackson 
College biology
In testing synaptic transmission, you found that there were 300 failures in 1000 trails of stimulating a presynaptic neuron. The average EPSP size was .7 mV +/ .2mV (mean +/ SD), and the average 'mini' EPSP size was .6mV +/ .1mV. Does the synapse obey
asked by J Jackson 
Algebra
Hi. I've tried doing these problems and got long decimals that don't make sense. Please help!! 1) 13x + 6=4x4 2) (1/2)x + 8= 3x + 2 3) (n/3) + 8=n + 1 4) 2n + 3= 2n + 3 I don't know how I would find n in this one!! 5) 5x + 2(2x1)=16 Thanks so much for
asked by Nikki 
accounting
I have figured this out I just want to make sure I am correct in my answers. 1.On January 2, 2007, A company issued $100,000 of 5%, 10 year bonds. The bonds will mature in ten years. The bonds were sold for for 95% (or .95 of par) and will pay interest
asked by Renee 
math
Prove that the equation Is an identity. Sec^4x  Tan^4x = Sec^2x + Tan^2x
asked by Rosilyn 
ETH125
Did African Americans go through annexation?
asked by samm 
calculus
What is the limit of this function as x approaches infinity? 2^x + x^3 / x^2 + 3^x
asked by Mishaka 
physics
Let's assume you use green light (λ = 550 nm) to look at an electron. What is the uncertainty in determining the electron's velocity? Express your answer rounded up to the nearest hundredth.
asked by Ky 
human service
I am having problems with finding an example of how an organization can use organizational commitment to positively impact job satisfaction. Can you give me any ideas of where to find information.
asked by Patiance 
chemistry
what are some experimental observations which support the theory that there is restricted rotation around double bonds? I know it would require more energy to breakthe pi bonds so maybe higher melting point? I can't think of anything else really.
asked by patricia 
maths
In a game of skill, a player has probability 1/3,5/12,1/4 of scoring 0,1,2 respectively and the game ends when he scores a zero. Assuming independence of trials, find the probability of the total score being 'n' when the game ends?
asked by Saurabh 
geometry
find the value of x and y of a parallelogram one side a degree
asked by sadia 
PHYSICS
A positive charged particle placed on a frictionless table by attaching it to a string fixed at one point of magnetic field is switched on in the vertical direction, the tension in the string (A) will increase (B) will decrease (C) will remain same (D) may
asked by rishabh 
Chemistrythanks
I have a method using HPLC (high performance liquid chromatography). It states that a 4.6 x 150mm,3um column should be used. (stationary phase : octadecylsilyl silica gel). I have a 4.6 x 100mm,2.7um column, silicabased, bondedphase (nonpolar) column.
asked by angie 
buss/stats
what is it called when all the items in the population have the same chance of being selected for the sample?
asked by Tim 
Math
julia needs to purchase a ladder that just reaches the top of a 16 foot building. if the bottom of the ladder will be placed 12 feet from the base of the building how long should julia's ladder be?
asked by Will 
physical
What is the wavelenght if the distance covered by a wave in 14 succesive trough is 25cm
asked by Anonymous 
Calculus
If the slope is 3, find an equation of the tangent line to the curve at P(8, 3).
asked by Cat 
Calculus
Find the Limits. lim [t^3 + 3t^2]/[t^3  4t^2] t>0
asked by Nemo 
probability
find F(y) and f(y) if Y=4X+3 and f(x)=2(e^2x)u(x)
asked by Anonymous 
Science
How is our water resources connected with the economical conditions of our country? Please explain to me.
asked by Cashley 
mathssssss
If (2x3) is a factor of 2x raised to the power four3xsquare+15x15k,find the value of (3kroot 5 k).
asked by .. 
Chemistryhelp needed
Posted by angie on Saturday, October 8, 2011 at 6:02am. I have a method using HPLC (high performance liquid chromatography). It states that a 4.6 x 150mm,3um column should be used. (stationary phase : octadecylsilyl silica gel). I have a 4.6 x 100mm,2.7um
asked by angie 
chemistry
what is the new boiling point for a solution prepared from 1.40 mol of KCI 1.00kg of water?
asked by lkra 
algebra
Suppose the ball was 2.74 feet above ground when it was hit. It reached a max. height of 116.3ft when it was approx 215.3 ft away from where he hit the ball. The ball lands after travelling a ground distance of approx 433.1 ft.  find an equation in form
asked by Jennifer 
organic chemistry
(x/15)/[(1.5x)/45]=5.8 how do I move these around to find x partition coefficient equation
asked by Anonymous 
math
Arthur can paint a room in 6 hours. Boris can paint the same room in 8 hours. If boris and arthur work together, how long will it take for them to paint the room
asked by anonymous 
algebra
Find the length of one base of a trapezoid if the area is 126 inches squared, the height is 7 inches and the length of the other base is 15 inches.
asked by Anonymous 
healthcare
required annually pap smear: government is limiting those who have medicaid only to recevie the pap smear only every 3rd year but those you have private insurance it will cover it annually . what do you think opinions
asked by jessica 
Statistics
Classify the following variable as nominal, ordinal, discrete, or continuous and state why it is such a variable: number of US Senators
asked by Jen 
eng 102
I need help picking out a topic to write about. this is the assignment. analyzes a current problem in light of a historical event/situation and primarily argues a truth claim( definition, causeandeffect, and/or resemblance)
asked by fruits 
Chemistry
Element X has three istotopes, X⁹⁵, X⁹⁶, and X⁹⁸. Element X has an atomic mass of 96.344u. If X98 has a mass of 98.0001u and an abundance of 19.8%, what are the abundances of X96 (mass of 95.9988u) and X95 (mass of 95.0011u)?
asked by Laurie 
Chemistry
Element X has three istotopes, X⁹⁵, X⁹⁶, and X⁹⁸. Element X has an atomic mass of 96.344u. If X98 has a mass of 98.0001u and an abundance of 19.8%, what are the abundances of X96 (mass of 95.9988u) and X95 (mass of 95.0011u)?
asked by Laurie 
us history
President Roosevelt helped end the RussoJapanese war with which one of these? The Great White Fleet; Gentlemen's agreement ; spheres of infuence ; or the treaty of Portsmouth
asked by Amy 
Calculus
Recall that the average velocity between times t1and t2 is calculated using vave = y(t2) − y(t1)/t2 − t1. We are given that y = 14t − 1.86t^2. Evaluating at t = 1, we have y(1) = 14(1) − 1.86(1)2 = 12.14. Thus, the average velocity between times 1
asked by Prater 
PHI 103
an argument with a friend, family mem ber or a coworker in premisconclusion
asked by vandella 
Math check
Find the area of the top of an office desk with a length of 2 yd. and a width of 7/8 yd. Answer: 14/8
asked by Alex L. 
Accounting
Statement of Owner's Equity I've tried to get it to balnce with the amount of on my balance sheet of $54,500.00 but can not can you help Cash… …… ……… … … … ………$21,500 Accounts Receivable………17,500 Office Supplies…… …
asked by Christine