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Questions Asked on October 8, 2011

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
1. 5 answers
2. asked by Jessica
3. 11,836 views
a 2.5kg block initially at rest on horizontal surface. A horizontal force F of magnitude 6N and a vertical force P are the
1. 4 answers
2. asked by Fatima
3. 9,271 views
The hammer throw is a track-and-field event in which a 7.30-kg ball (the hammer) is whirled around in a circle several times and
1. 1 answer
2. asked by Mary
3. 5,548 views
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 =
1. 2 answers
2. asked by Katy
3. 4,989 views
Find the constant c so thatlim [x^2 + x + c]/[x^2 - 5x + 6] exists. x->3 For that value of c, determine the limit. (Hint: Find
1. 2 answers
2. asked by Blue
3. 4,736 views
The given curve is rotated about the y-axis. Find the area of the resulting surface.y = 1/4x^2 − 1/2ln x, 4 ≤ x ≤ 5 The
1. 2 answers
2. asked by Caroline
3. 4,417 views
what is the value of the 8 in 387?
1. 6 answers
2. asked by kina
3. 3,583 views
How many dollars is 200 quarters, 150 dimes, and 300 pennies
1. 15 answers
2. asked by mooooooooooop
3. 3,541 views
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
1. 1 answer
2. asked by Antonia
3. 3,474 views
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
1. 1 answer
2. asked by lucky
3. 3,085 views
I have to find the area of a rectangle in fraction measurements.Area = L*W = 9/16 yds. * 14/15 yds.
1. 2 answers
2. asked by Alex L.
3. 2,724 views
Electronics and inhabitants of the International Space Station generate a significant amount of thermal energy that the station
1. 3 answers
2. asked by Set5
3. 2,686 views
Jake scored x points in the first basketball game. He scored 2 fewer points in the next game. His teammate, Jack, scored 2y
1. 3 answers
2. asked by gms
3. 2,482 views
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. 2 answers
2. asked by Anonymous
3. 2,394 views
Prove that the equation Is an identity.Sec^4x - Tan^4x = Sec^2x + Tan^2x
1. 1 answer
2. asked by Rosilyn
3. 2,117 views
When a student took her psychology quiz, she did badly on the essay question. Ealier, she had written a good practic essay on
1. 4 answers
2. asked by Tisha
3. 1,916 views
The dipole moment (mu) of HBr (a polar covalent molecule) is 0.851 D (debye), and its percent ionic character is 12.6 %.
1. 1 answer
2. asked by Caitlin
3. 1,912 views
The field of nanotechnology offers some intriguing possibilities, such as the creation of fibers one atom wide. Suppose you were
1. 3 answers
2. asked by Erica
3. 1,868 views
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
1. 4 answers
2. asked by tori
3. 1,809 views
The top layer of your goose down sleeping bag has a thickness of 5.0 cm and a surface area of 1.0 m^2. When the outside
1. 5 answers
2. asked by Becky
3. 1,788 views
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?
1. 2 answers
2. asked by Heather
3. 1,788 views
Plaster of Paris is the compound calcium sulfate hemihydrate, CaSO4*1/2H2OWhat mass of water is liberated when a 2.763 gram
1. 1 answer
2. asked by Roy
3. 1,556 views
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
1. 2 answers
2. asked by Selina
3. 1,514 views
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
1. 1 answer
2. asked by aaa
3. 1,471 views
a load p is supported by a steel pin that has been inserted in a short wooden member hanging from the ceiling. the ultimate
1. 1 answer
2. asked by julia
3. 1,418 views
A certain metal surface emits electrons when light is shone on it. (a)How can the number of electrons per second be increased?
1. 1 answer
2. asked by Reagan
3. 1,404 views
People were polled on how many books they read the previous year. How many subjects are needed to estimate the number of books
1. 1 answer
2. asked by Stacey
3. 1,371 views
please help with this DBQ to what extent it is justified to characterize the industrial leaders of the 1865-1900 era as either
1. 2 answers
2. asked by heather
3. 1,287 views
A quaterback throws the football to a stationary receiver who is 31.5m down the field. If the football is thrown at an initial
1. 0 answers
2. asked by rose
3. 1,265 views
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
1. 0 answers
2. asked by Matthew
3. 1,259 views
If Planck's constant were smaller than it is, would quantum phenomena be more or less conspicuous than they are now?
1. 0 answers
2. asked by Brann
3. 1,258 views
9. "Basic essentials" is an example of a: (Points : 5)cliché. redundancy. doublet. trite phrase
1. 2 answers
2. asked by Anonymous
3. 1,247 views
A plane flying with a constant speed of 4 km/min passes over a ground radar station at an altitude of 5 km and climbs at an
1. 1 answer
2. asked by Anonymous
3. 1,196 views
A 62.0-kg runner has a speed of 4.90 m/s at one instant during a long-distance event.
1. 1 answer
2. asked by nery
3. 1,129 views
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-
1. 1 answer
2. asked by simantha
3. 1,129 views
What is the wavelength and the frequency of a 50-MeV gamma ray photon.
1. 0 answers
2. asked by Brann
3. 1,118 views
What kind of experiment might you use to distinguish between a gamma ray of wavelength 10^-11m and an electron whose de Brogile
1. 1 answer
2. asked by Brann
3. 1,116 views
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)Ho
1. 0 answers
2. asked by aaa
3. 1,067 views
Which is an effective strategy for ending an informative letter to a new client?A. stress that the reader is welcome to call
1. 1 answer
2. asked by Sheliah
3. 1,055 views
Simplify each expression. Justify your steps using the Commutative, Associative and Distributive Properties when necessary8k2 +
1. 3 answers
2. asked by chris
3. 1,031 views
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
1. 3 answers
2. asked by Kristi
3. 1,023 views
How many roots does the graph of this function have?4x^4 - 4^x I believe that it either has two or three roots.
1. 10 answers
2. asked by Mishaka
3. 1,018 views
In a real-life situation, to model the distance x and the height of hitting a baseball y as in: y = ax^2 + bx + c1. When dealing
1. 1 answer
2. asked by Anil
3. 987 views
Triangle XYZ above is similar to triangle UVW (not shown). If the length of one side of triangle UVW is 60, then what is one
1. 1 answer
2. asked by chris
3. 954 views
simplify the following by adding like terms -4-6m+10n-56-n+9m
1. 1 answer
2. asked by mark
3. 953 views
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
1. 4 answers
2. asked by Laruen
3. 938 views
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
1. 2 answers
2. asked by zooz
3. 935 views
Classify the following variable as nominal, ordinal, discrete, or continuous and state why it is such a variable:number of US
1. 2 answers
2. asked by Jen
3. 902 views
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. 1 answer
2. asked by Chris
3. 874 views
In a reaction, 37.5 g of chromium(III) oxide reacts with 13.3 g of aluminum to produce chromium and aluminum oxide. If 25.7 g of
1. 1 answer
2. asked by Anonymous
3. 873 views
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
1. 3 answers
2. asked by latha
3. 849 views
how many 3-digit numbers have exactly 2 digits that are the same?
1. 2 answers
2. asked by tori
3. 844 views
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
1. 2 answers
2. asked by Girl
3. 824 views
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
1. 1 answer
2. asked by s
3. 821 views
Ethanol (C2H5OH) boils at a temperature of 78.3oC.What amount of energy, in joules, is necessary to heat to boiling and then
1. 1 answer
2. asked by John
3. 819 views
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
1. 0 answers
2. asked by adrian
3. 815 views
To create artificial gravity, the space station shown in the drawing is rotating at a rate of 0.600 rpm. The radii of the
1. 0 answers
2. asked by Mary
3. 808 views
I have to factor the expression and use fundamental identities:sins^2xcscx^2-sin^2x sec^4x-tan^4x
1. 2 answers
2. asked by Help pleaseee
3. 806 views
The Hellenistic style was exemplified inA)Seasted boxer B) geometric cases C) Kouros D)Classical I said B Greek sculpture of the
1. 0 answers
2. asked by Taki
3. 806 views
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-
1. 2 answers
2. asked by simantha
3. 804 views
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
1. 0 answers
2. asked by roy
3. 795 views
Calculate the amount (in moles) of H₂O in 2.00g of Na₂CO₃ ⋅ 10H₂O.Thanks so much!!
1. 1 answer
2. asked by Erica
3. 777 views
Plaster of Paris is the compound calcium sulfate hemihydrate, CaSO4*1/2H2OWhat mass of water is liberated when a 2.763 gram
1. 1 answer
2. asked by Roy
3. 772 views
In this problem you will estimate the heat lost by a typical house, assuming that the temperature inside is T(in) = 20 degrees
1. 0 answers
2. asked by Becky
3. 768 views
A mass m = 73 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 17.9 m and finally
1. 0 answers
2. asked by aaa
3. 766 views
The schedule below shows the level of output that can be produced using different levels of input. A unit of input costs $80 and
1. 0 answers
2. asked by John Doe
3. 751 views
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
1. 1 answer
2. asked by Mishaka
3. 749 views
A block of mass m = 5.9 kg is pulled up a è = 21° incline as in the figure with a force of magnitude F = 34 N.(a) Find the
1. 1 answer
2. asked by Imani
3. 741 views
An 8.4 g bullet is accelerated in a rifle barrel 45 cm long to a speed of 1020 m/s.Use the work-energy theorem to find the
1. 1 answer
2. asked by Bob
3. 741 views
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
1. 2 answers
2. asked by anthony
3. 739 views
I need help with the visual logic flowchart for the following problem: A local deli sells lunch value meals that consist of a
1. 3 answers
2. asked by Thermonf
3. 734 views
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
1. 0 answers
2. asked by Ashley
3. 725 views
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
1. 2 answers
2. asked by dj
3. 713 views
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
1. 2 answers
2. asked by ramy
3. 700 views
Who belief in expansionism led to the building of the panama canal
1. 0 answers
2. asked by Amy
3. 684 views
I have added Below my balance sheet andincome statement now the statement of owners equity is the beginning capital 28,2800 plus
1. 2 answers
2. asked by Christine
3. 679 views
President Roosevelt helped end the Russo-Japanese war with which one of these? The Great White Fleet;Gentlemen's agreement ;
1. 2 answers
2. asked by Amy
3. 673 views
a gun fires a shell with a speed of 315m/s. Neglecting the effects of air resistance, calculate the maximum range of this gun
1. 4 answers
2. asked by Cam
3. 672 views
I am really stuck, I have tried to look these up everywhere and I keep getting different answers.I have to find the balanced
1. 4 answers
2. asked by Franky
3. 663 views
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
1. 1 answer
2. asked by steve
3. 661 views
Element X has three istotopes, X⁹⁵, X⁹⁶, and X⁹⁸. Element X has an atomic mass of 96.344u. If X-98 has a mass of
1. 0 answers
2. asked by Laurie
3. 649 views
What is the final temperature, in oC, after a 26.5 g piece of ice, at 0oC, is placed in a styrofoam cup with 122 g of water
1. 1 answer
2. asked by John
3. 644 views
A mass M can slide with negligible friction inside a tube bent in a circle of radius R = 1.45 m. The tube rotates about its
1. 0 answers
2. asked by edward
3. 641 views
A candidate for a political office claims that he will win the election. A poll is conducted, and 35 of 150 voters indicate that
1. 0 answers
2. asked by Jen
3. 640 views
I am having problems with finding an example of how an organization can use organizational commitment to positively impact job
1. 3 answers
2. asked by Patiance
3. 637 views
There are various stakeholders in an organization. The two key stakeholders are the customers and the stockholders. Some
1. 1 answer
2. asked by GG
3. 630 views
Element X has three istotopes, X⁹⁵, X⁹⁶, and X⁹⁸. Element X has an atomic mass of 96.344u. If X-98 has a mass of
1. 1 answer
2. asked by Laurie
3. 629 views
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
1. 0 answers
2. asked by Renee
3. 626 views
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
1. 0 answers
2. asked by Renee
3. 625 views
He suffered an injury to his knee, and this is causing him pain and discomfort.Help find the verbs
1. 1 answer
2. asked by bec
3. 622 views
write an expression that has five terms and simplifies to 5m3 + 4n. Please give me the steps
1. 1 answer
2. asked by chris
3. 622 views
Describe whether the following study would most likely be “observational” or “experimental”, and why it would be so.*
1. 4 answers
2. asked by Jen
3. 617 views
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.
1. 1 answer
2. asked by Matthew
3. 614 views
Name and provide the website address of the National OHS organisation. Visit their website and download a piece of information
1. 3 answers
2. asked by kayla
3. 612 views
the temperateure of Mars reaches 27 degree celsius during the day and -125 degree celsius at night. What is the average
1. 4 answers
2. asked by Marko
3. 611 views
In a game of skill, a player has probability 1/3,5/12,1/4 ofscoring 0,1,2 respectively and the game ends when he scores a zero.
1. 0 answers
2. asked by Saurabh
3. 608 views
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
1. 1 answer
2. asked by Mishaka
3. 605 views
The distribution coefficient of a compound between ether and water is 5.8. A student takes 1.5.g of the compound and dissolves
1. 1 answer
2. asked by Anonymous
3. 596 views
how do solve a math question that states an employee has an annual salary of 26,965. after he arranges to have deducted from his
1. 4 answers
2. asked by Queen
3. 595 views
Baseballs cost $5 and baseball gloves cost $20. Assume you have $100 total to spend on these items. Construct a table similar to
1. 0 answers
2. asked by Jennifer
3. 595 views

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