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2011
April

Questions Asked on April 19, 2011

Calculate the lattice energy of potassium oxide from the following data:Enthalpy of sublimation of potassium: +89.24 kJ/mol Bond
1. 2 answers
2. asked by Joanie
3. 13,812 views
If a circle has a diameter of 2 3/8 inches, then what is the length of the radius
1. 2 answers
2. asked by nysanah
3. 1,844 views
Which expression means y is three times the size of x?A. Y= x + 3 B. Y = x over 3 c. Y = x - 3 D. y = 3x A manufacturing
1. 3 answers
2. asked by Eric Chanto
3. 681 views
In right triangle ABC below, what is the sine of <A?TRiangle has 7 cenimeters and 24 centimeters
1. 2 answers
2. asked by Maram
3. 968 views
A laffer leaning against a house maes an angle of 60 degress with the ground. The foot of the leadder is 7 feet from the
1. 1 answer
2. asked by Maram
3. 399 views
From the top of a lighthouse 210 feet high, the angle if depression to a boat is 27 degress. Find the distance from the boat to
1. 1 answer
2. asked by Maram
3. 671 views
sketch, label and mark each figure.1.Isoscles obtuse triangle TRI with vertex angle T. 2.Rhombus RHOM with acute <H and the
1. 0 answers
2. asked by Maram
3. 588 views
a 2 kg object is released from rest from a height of 10 m above the ground.calculate the kinetic energy at the moment it reaches
1. 0 answers
2. asked by zafirah
3. 925 views
what did sojourner truth saw as a solution to the problem.y do teachers give us complicaited stuff omg yes i used stuff
1. 0 answers
2. asked by megan ayers
3. 552 views
Fe2O3+ 3CO=2Fe+3Co2, suppose that 1.64kg of Fe are obtained from a 2.62kg sample of Fe2O3 (ore). assuming that the reaction goes
1. 0 answers
2. asked by becky
3. 1,338 views
describe how social biologists may help to solve the problems of housing lacking sanitation
1. 1 answer
2. asked by Shonnie
3. 393 views
A ray of light of frequency is 5.09 x 10^14 Hz is traveling from water to medium X. The angle of incidence in water is 45
1. 1 answer
2. asked by Allyse
3. 1,146 views
Journal Entry of a subordinate group
1. 2 answers
2. asked by Anonymous
3. 509 views
Identify one enviromenral or human factor tha causes ill health,accidents
1. 2 answers
2. asked by makhado asiashu
3. 569 views
A grinding wheel 0.28 m in diameter rotates at 2400 rpm. What is the acceleration of a point on the edge of the grinding wheel?
1. 1 answer
2. asked by Cara
3. 3,108 views
I urgently need to check if everything is correct. I hope everything is OK.1) Outline the main features of the Renaissance with
1. 1 answer
2. asked by Mike1
3. 559 views
A centrifuge accelerates uniformly from rest to 18000 rpm in 180 s. Through how many revolutions did it turn in this time?
1. 1 answer
2. asked by Cara
3. 1,285 views
ASSUME THE FORMULA OF GASOLINE AS C8H18 AND ITS DENSITY IS 0.71g/ml. IF A CAR GETS 26.2mi/gal (1GAL=3.785L), WHAT IS THE MASSOF
1. 0 answers
2. asked by dana
3. 889 views
Journal Entry of Subordinate of African Americans
1. 1 answer
2. asked by Anonymous
3. 1,190 views
list two reasons that stereotypes creted by propaganda may gave affected the deciosion to drop the atomic bomb on japan
1. 1 answer
2. asked by AJ
3. 373 views
CALCULATE THE MASS OF Na3PO3 PRODUCED AFTER 28.0g OF H3PO3 IS TREATED WITH 42.0g OF NaOH, AND ALSO CALCULATE THE MASS REMAINING
1. 0 answers
2. asked by dana
3. 550 views
A solution has a volume of 2L and contains 36g of glucose, what is the molaritiy of the solution?
1. 1 answer
2. asked by Bobbi
3. 514 views
A dish of hot food has an emissivity of 0.42 and emits 15 W of thermal radiation. If you wrap it in aluminum foil, which has an
1. 0 answers
2. asked by Olga
3. 831 views
220 ml of an HCl solution that is 31.4% by mass is required to neutralize .50 gal of the chlorine solution. what is the molarity
1. 0 answers
2. asked by Bob
3. 470 views
angle x lies in quadrant 3 and cos(x)=-.6. Find cos(3pi/2-x)
1. 1 answer
2. asked by Dan
3. 512 views
how many grams of hydrogen peroxide (H2O2) must be added to 1500 ml of water to produce a concentration of 1.33 m (molal
1. 1 answer
2. asked by Anonymous
3. 573 views
if a jet printer prints an articlae in 12 minutes and a laser printer prints the same in 29 minutes if they work together how
1. 2 answers
2. asked by Anonymous
3. 489 views
You are standing at a spot where the magnetic field of the Earth is horizontal, points due northward, and has magnitude 36.9
1. 0 answers
2. asked by ok
3. 454 views
Two 173 turn coils, each with a diameter of d = 4.45 m, are placed w = 1.31 m apart, as shown in the figure. A current of 6.99 A
1. 4 answers
2. asked by ok
3. 593 views
Hello, I am confused on my assignment I have to do. It states to make a list on perspectives of caregivers. Can you explain this
1. 1 answer
2. asked by Nikol
3. 847 views
Estimate the enthalpy change for the following reactionOH(g)+CH4(g)==>CH3(g)+H2O(g)
1. 0 answers
2. asked by West
3. 557 views
A 1.00-L sample of dry air at 25 °C contains 0.0319 mol N2, 0.00856 mol O2, ... The main components of dry air, by volume, are
1. 0 answers
2. asked by Kate
3. 820 views
Your conclusions are faulty in a cause-and-effect essay if:A. you include secondary effects B. you include only short-term
1. 3 answers
2. asked by melissa
3. 991 views
You are standing at a spot where the magnetic field of the Earth is horizontal, points due northward, and has magnitude 36.9
1. 0 answers
2. asked by ok
3. 429 views
You are standing at a spot where the magnetic field of the Earth is horizontal, points due northward, and has magnitude 36.9
1. 0 answers
2. asked by ok
3. 429 views
A square ammeter has sides of length l = 3.75 cm. The sides of the ammeter are capable of measuring the magnetic field they are
1. 0 answers
2. asked by ok
3. 443 views
Perform the indicated operations of 5/8-(2-7)
1. 2 answers
2. asked by Audrey
3. 538 views
If you decide to buy a car for $17,500 and get $2,500 on a trade-in. If the bank finances the remainder at 7.8%, and you want to
1. 1 answer
2. asked by happy
3. 484 views
I need a good research question for my statistics project. I have to compare two to calculate the difference. variance/standard
1. 1 answer
2. asked by Kimberly
3. 479 views
I posted this below, and no one answered. Please help with this very complicated question! Using 3(x-3)(x^2-6x+23)^1/2, as the
1. 0 answers
2. asked by Amy
3. 1,025 views
quantity price50 $1.25 100 $2.25 200 $4.20 300 $11.25 Which quantity has the best unit price? PLease explain so i could
1. 5 answers
2. asked by KAyleen
3. 525 views
4BF3+3H2O=H3BO3+3HBF4if the reaction vessel contains 0.496 mol BF3 and 5.63g of H2O, which compound is the limiting reactant?
1. 1 answer
2. asked by dana
3. 1,081 views
1. An analogy helps clarify a complex idea by:A. presenting several definitions of the idea. B. comparing the idea with a
1. 3 answers
2. asked by melissa
3. 653 views
Which of the following should NOT be capitalized?A. Europe B. the Earth C. Far East D. the South Atlantic I think it's B?
1. 3 answers
2. asked by melissa
3. 416 views
when a car suddenly stops at a red light a book lying on the car seat slides forward why does the book continue to move forward?
1. 3 answers
2. asked by Anonymous
3. 1,874 views
What is the the meaning of APA
1. 1 answer
2. asked by JoshelaT
3. 447 views
Hello. Will you please tell me if the following word order is possible in English: "She sometimes (?) doesn't go to work" or is
1. 1 answer
2. asked by Ilma
3. 417 views
Introduced into a 1.50L container is 0.100mol PCl5(g). The flask is held at 227degreesC until equilibrium is established. What
1. 1 answer
2. asked by elona
3. 458 views
What is the relationship between critical thinking and academic integrity?
1. 1 answer
2. asked by JoshelaT
3. 430 views
Sam has 9 models. Bill has twice as many models as Jim. Jim has three less models than Sam. Show how to find the difference
1. 1 answer
2. asked by Jaer
3. 553 views
The area of trapezoid is h( b1+b2)/5,where h is the altitude, and b1 and b2 are the lenghts of the parallel bases. If trapezoid
1. 0 answers
2. asked by Maram
3. 501 views
If a and b are any real numbers such that 0<a<1<b, which of the following must be true ov the value ab??
1. 1 answer
2. asked by Maram
3. 378 views
In triangle ABC ,if <A and <B are acute angles, and sin A=10/13 what is the value of cos A
1. 0 answers
2. asked by Maram
3. 926 views
If a and b are any real numbers such that 0<a<1<b, which of the following must be true ov the value ab??
1. 1 answer
2. asked by Maram
3. 552 views
because i have to sketch, label and mark each figure.sketch, label and mark each figure. 1.Isoscles obtuse triangle TRI with
1. 0 answers
2. asked by Maram
3. 534 views
From the top of a lighthouse 210 feet high, the angle if depression to a boat is 27 degress. Find the distance from the boat to
1. 0 answers
2. asked by Maram
3. 592 views
A laffer leaning against a house maes an angle of 60 degress with the ground. The foot of the leadder is 7 feet from the
1. 0 answers
2. asked by Maram
3. 455 views
how long will it take a sum of money to tripe itself at (i) 9.5% compound interest and (ii) 9.5% simple interest?
1. 2 answers
2. asked by judith
3. 445 views
Deep within the earth, the process of mantle ___ drives plate tectonics.A) Condensation B) Subduction C) Currents D) Convection
1. 1 answer
2. asked by dank
3. 1,084 views
Suppose you deposit $5,000 in a bank which pays 10 percent interest compounded twice a year. The actual annual interest rate you
1. 3 answers
2. asked by mike
3. 701 views
How much is 2000 kg in outer space?
1. 1 answer
2. asked by Ray
3. 351 views
What is the lewis structure for In+?I have tried everything and the answer seems wrong? Please help me
1. 1 answer
2. asked by Toni Jones
3. 1,286 views
For trigonometric substitution to solve the above integral, fill in the blanks below using the picture of the triangle given.int
1. 1 answer
2. asked by Chiara
3. 3,599 views
Which of these sentences is correct or illustrates the best style? (Points : 1)Greg got a new job. He had an interview on
1. 2 answers
2. asked by Joise A
3. 632 views
A small rubber wheel is used to drive a large pottery wheel, and they are mounted so that their circular edges touch. The small
1. 1 answer
2. asked by cara
3. 653 views
In long-run equilibrium there will be no economic profit in a purely competitive static economy because:1- barriers to entry
1. 0 answers
2. asked by mike
3. 489 views
how do networks help small business by overcoming the major obstacle of being small? explain with examples.
1. 0 answers
2. asked by lastdon
3. 423 views
does australi have an enterprise culture ? if not , why not ? discuss
1. 0 answers
2. asked by lastdon
3. 291 views
An airplane flies 200 km due west from city A to city B and then 245 km in the direction of 31.5° north of west from city B to
1. 0 answers
2. asked by diamond
3. 835 views
The bolts on the cylinder head of an engine require tightening to a torque of 63 . If the six-sided bolt head is 15 in diameter,
1. 0 answers
2. asked by cara
3. 868 views
Four candidates are running for president of the student council. three other candidates are running for vice-president. how
1. 1 answer
2. asked by Mai
3. 925 views
Read the summary paragraph on the bottom of p. 37. Identify the author’s goal in writing the paragraph. How effectively do you
1. 3 answers
2. asked by Monica
3. 647 views
How does nuclear fission create energy?Nuclear energy is produced through the splitting, or fission, of a uranium atom in the
1. 0 answers
2. asked by Anonymous
3. 1,146 views
I don't know why. Please help me.Why did the reactors at the Fukushima plant overheat? Because of Nuclear power generation?
1. 2 answers
2. asked by Anonymous
3. 486 views
(2 the square root of 3+1)(the square root of 3-4)
1. 1 answer
2. asked by Veronica
3. 296 views
A bag holds 40 erasers that are each the same size and shape.Eight of the erasers are red. You reach into the bag and select one
1. 1 answer
2. asked by Savanna
3. 408 views
A 10 ft. ladder is leaning against a building and makes an angle of 65 degrees with the ground. How high above the ground is the
1. 2 answers
2. asked by Randi
3. 3,917 views
Are zeros which are after the decimal point significant?
1. 1 answer
2. asked by Louise
3. 367 views
what is the lfe expectancy of a person with tay-sachs disease
1. 2 answers
2. asked by brianne
3. 462 views
Consider the exothermic reaction CoCl42-(aq) + 6 H2O(l) --> Co(H2O)62+(aq) + 4 Cl -(aq). Will the equilibrium concentration of
1. 0 answers
2. asked by Rebekah
3. 1,559 views
You have 45 coins. Five out of every 9 are heads and the rest are tails. How many coins are heads?
1. 1 answer
2. asked by Ryan
3. 475 views
okay so i'm doing a scrapbook for my saint project and i was wondering if there is a software i can download which is like a
1. 4 answers
2. asked by kathy
3. 804 views
Simply the expression 3(2+3) squared/ 7-2 - 10 squared/5
1. 1 answer
2. asked by Nick
3. 364 views
A storage tank at stp contains 18.5kg of nitrogen. What is the volume of the tank and what would the pressure be if you added
1. 2 answers
2. asked by Mark
3. 6,162 views
i am trying to find the average rate of h2? from mastering chemistry home work. part a answer was 0.027m/s and part b answer was
1. 0 answers
2. asked by Tasha
3. 413 views
What advice did the japanese government give to people living near the Fukushima power plant?Residents within 20 km of the
1. 1 answer
2. asked by Anonymous
3. 482 views
This question is in regards to Hamlets to be or not be speech.Historians have noted that some of the most effective leaders in
1. 5 answers
2. asked by Emma
3. 571 views
For what reasons are you in favour of using nuclear energy to generate electricity? What reasons would you be against nuclear
1. 2 answers
2. asked by Anonymous
3. 514 views
In a jar there are 18 marbles. There are 3 red marbles, 9 green marbles, 6 blue marbles. What is the probability of drawing
1. 2 answers
2. asked by Itreek
3. 663 views
What is the final temperature when 750 J of energy is added to 9.0 g of ice at 0.0 degress C?
1. 0 answers
2. asked by Alex
3. 422 views
Which of the following statements are true?Fusion reactions result in nuclei with higher Z. To keep a nuclear power plant going,
1. 3 answers
2. asked by Jamie
3. 1,662 views
If the equation is :Cd2+(aq) + Cl-(aq) ¡ê CdCl+ What would happen when Na+ is added would it shift to the right or will there
1. 1 answer
2. asked by Nicole
3. 528 views
I need help with two questions:1) An object can only have a charge that is an integral multiple of the charge on the ___. Am I
1. 2 answers
2. asked by Sushmitha
3. 1,016 views
For what reasons are you in favour of using nuclear energy to generate electricity? What reasons would you be against nuclear
1. 3 answers
2. asked by Anonymous
3. 532 views
What advice did the japanese government give to people living near the Fukushima power plant?Residents within 20 km of the
1. 2 answers
2. asked by Anonymous
3. 403 views
Why did the reactors at the Fukushima plant overheat?
1. 4 answers
2. asked by Anonymous
3. 386 views
How does nuclear fission create energy?Nuclear energy is produced through the splitting, or fission, of a uranium atom in the
1. 2 answers
2. asked by Anonymous
3. 1,709 views
the workers who have been trying to bring the nuclear crisis under control volunteered 4 the job. what factors might they have
1. 1 answer
2. asked by Anonymous
3. 1,054 views
You have 16 coins that are heads up and 18 coins that are tails up. After you add some coins that are tails up, the ratio of
1. 0 answers
2. asked by Natalia
3. 1,022 views
What happens to your image that is initially observed in a flat mirror from 10 feet away and then you move further away to 20
1. 1 answer
2. asked by Jessica
3. 324 views

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