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2010
April

Questions Asked on April 2, 2010

It takes 254 kJ/mol to eject electrons from a certain metal surface. What is the longest wavelength oflight (nm) that can be
1. 2 answers
2. asked by Anonymous
3. 6,297 views
Five lines in the H atom spectrum have the following wavelengths in Ǻ: a). 1212.7, b). 4340.5, c).4861.3 d). 6562.8 and e).
1. 8 answers
2. asked by Samantha
3. 4,233 views
Chromium (II) nitrate forms a hydrate that is 40.50% water by mass. What is its chemical formula?I just need to figure out how
1. 1 answer
2. asked by Lola
3. 3,989 views
The microwaves in a microwave oven are produced in a special tube called a magnetron. The electrons orbit in a magnetic field of
1. 1 answer
2. asked by CAMCAM
3. 2,715 views
The Solvay process for the manufacture of sodium carbonate begins by passing ammonia and carbon dioxide through a solution of
1. 1 answer
2. asked by Zacky
3. 2,312 views
Use the discriminant to determine the number and type of solutions for the given equation. Either A, B, C, OR D2x^2 = 7x - 8 A
1. 1 answer
2. asked by Anonymous
3. 2,267 views
how do you answer "te gusta la clase de matematicas tanto como la clase de espanol? por que?" in spanish
1. 1 answer
2. asked by Anonymous
3. 2,079 views
The triangular numbers are the numbers 1, 3, 6, 10, 15, . . .; the square numbers are the numbers1, 4, 9, 16, 25, . . . The
1. 2 answers
2. asked by Brian
3. 1,987 views
during a recent telethon people pledged $25 or $50. twice as many people pledged $25 as $50. altogether, $18000 was pledged. how
1. 2 answers
2. asked by emily
3. 1,968 views
Find the value(s) of x, so that f’(x) = 0 for the function f(x) = 4x3 – 6x2 – 24x.
1. 1 answer
2. asked by David
3. 1,810 views
what is the molar change in enthalpy when 100 g of ice is heated from -18.2C to -7.2C?(C=37.4 J/K*mol)
1. 3 answers
2. asked by any
3. 1,726 views
Find the critical value zc necessary to form a confidence interval at the given level of confidence.a. 90% = 1.645 b. 85% =
1. 1 answer
2. asked by looking for someone to varify my work please
3. 1,702 views
A weight attached to a spring is pulled down 4 inches below the equilibrium position. Assuming that the frequency of the system
1. 1 answer
2. asked by ame
3. 1,659 views
in An Essay on Criticism,Alexander Pope defines the use of wit in literature,stating that a poet should use plain language and
1. 2 answers
2. asked by trish
3. 1,658 views
Why do you suppose some of Rome's citizens wanted absolute rulers instead of elected senators?
1. 4 answers
2. asked by Blair
3. 1,503 views
If the speed of sound in air is 340 m/s, what is approximately the length of a shortest air column closed at one end that will
1. 2 answers
2. asked by Aaron
3. 1,491 views
What is one freedom that American democracy has today that was clearly not recognized in the Roman Empire?
1. 3 answers
2. asked by Blair
3. 1,491 views
If the speed of sound in air is 340 m/s, what is approximately the length of a shortest air column closed at one end that will
1. 1 answer
2. asked by Aaron
3. 1,441 views
One reason carbon monoxide (CO) is toxic in that it bind to the blood protein hemoglobin morestrongly than oxygen does. The
1. 3 answers
2. asked by Johannie
3. 1,384 views
1) The concentration of the aluminum ion in a test solution is 0.10M. Using the Ksp for aluminum hydroxide (3. x 10^-34),
1. 3 answers
2. asked by Zach
3. 1,368 views
The specific heat of a solution is X J/g*degreesC and its density is Y g/mL. The solution was formed by combining Z mL of
1. 1 answer
2. asked by Fred
3. 1,329 views
A wave that causes the particles of the medium to vibrate parallel to the direction the wave travels
1. 3 answers
2. asked by mark
3. 1,329 views
Show that there are no positive integers n for which n4 + 2n3 + 2n2 + 2n + 1 is a perfect square. Are there any positive
1. 0 answers
2. asked by Diamond
3. 1,294 views
I need help on proof reading this story.Christmas should be a time of celebrating the birth of Christ, but it seems like people
1. 2 answers
2. asked by Leila
3. 1,291 views
Find the maximum and minimum values of f(x,y,z)=3x+1y+5z on the sphere x^2+y^2+z^2=1
1. 2 answers
2. asked by Salman
3. 1,276 views
In order to provide snacks for guests on a 24-hour basis, Night sign a contact with Snack Attack. Snack Attack will install
1. 2 answers
2. asked by Armetrice
3. 1,268 views
What is the role of the wick in the candle?Is the role of the wick just to hold the flame of the candle? More information would
1. 2 answers
2. asked by Sara
3. 1,246 views
The presence of a catalyst provides a reaction pathway in which the activation energy of a certain reaction is reduced from 192
1. 5 answers
2. asked by Mark
3. 1,222 views
A) How do you prove that if 0(<or=)x(<or=)10, then 0(<or=)sqrt(x+1)(<or=)10?B) So once that is found, then how can you prove
1. 0 answers
2. asked by Sarita
3. 1,200 views
someone can check my answer for me? and b) Shape and Bond Angle answer would be great too! :)a) NF3 Structure = 26 electrons,
1. 1 answer
2. asked by Anonymous
3. 1,158 views
A double slit diffraction pattern is formed on a distant screen using mercury green light ofwavelength 546.1 nm. Each slit has a
1. 0 answers
2. asked by Sandhya
3. 1,145 views
I need help to get started with writing the equation for the following problem: It takes a freight train 2 hours longer to
1. 1 answer
2. asked by fiona
3. 1,116 views
a) The element with the greatest density is osmium, which has a density of 22.6g/cm3. calculate the mass of 32.1 cm3 of osmium.A
1. 2 answers
2. asked by Anonymous
3. 1,102 views
you work at a grocery store. your hourly wage is greater after 6pm than it is during the day. one week you work 20 daytime hours
1. 1 answer
2. asked by emily
3. 1,092 views
Solve the equation by the square root property. If possible, simplify radicals or rationalize denominators. Express imaginary
1. 2 answers
2. asked by Anonymous
3. 1,078 views
13. Healthy Foods, Inc., sells 50-pound bags of grapes to the military for $10 a bag.The fixed costs of this operation are
1. 4 answers
2. asked by marie
3. 1,051 views
Hi can someone help assist me with my math problems dealing with probabilityIf 80% of scheduled flights actually take place and
1. 1 answer
2. asked by Hannah
3. 1,047 views
One day, a person went to horse racing area, Instead of counting the number of human and horses, he instead counted 74 heads and
1. 1 answer
2. asked by martina
3. 1,047 views
whats the effect and the cause of retrograde motion in earths sky on both inferior and superior planets?
1. 1 answer
2. asked by nelly
3. 1,024 views
Western companies often impose western culture on the country in which the business is launched. Locate an article that contains
1. 1 answer
2. asked by Anonymous
3. 999 views
The squares of an infinite chessboard are numbered as follows: in the first row and first columnwe put 0, and then in every
1. 0 answers
2. asked by Raven
3. 966 views
Collins Office Supplies is considering a more liberal credit policy to increase sales, but expects that 9 percent of the new
1. 1 answer
2. asked by Brianna
3. 962 views
How teacher help students remember information.
1. 1 answer
2. asked by Anonymous
3. 936 views
An objuect is located 20cm in front of a -3.00 lens where is the image?
1. 0 answers
2. asked by Noelle
3. 923 views
Five lines in the H atom spectrum have the following wavelengths in Ǻ: a). 1212.7, b). 4340.5, c).4861.3 d). 6562.8 and e).
1. 1 answer
2. asked by Samantha
3. 909 views
fill in the missing digits in as many ways aspossible so the number will be divisible by 6. 3_2_
1. 1 answer
2. asked by Lisa
3. 902 views
A reflection grating is required which can resolve wavelengths as close as 0.002 nm in second order for the spectral region
1. 0 answers
2. asked by Sandhya
3. 895 views
how do some cells become brain cells and others become skin cells when the DNA in all of the cells is exactly the same
1. 0 answers
2. asked by m
3. 879 views
I have 70 problems today and have trouble near the end if I can get help on the ones I am going to to post I can do the last 15.
1. 0 answers
2. asked by Brenna
3. 830 views
A) How do you prove that if 0(<or=)x(<or=)10, then 0(<or=)sqrt(x+1)(<or=)10?B) So once that is found, then how can you prove
1. 0 answers
2. asked by Sarita
3. 791 views
Let’s agree to say that a positive integer is prime-like if it is not divisible by 2, 3, or 5. Howmany prime-like positive
1. 0 answers
2. asked by David
3. 764 views
The tail of a giant kangaroo is attached by a giant rubber band to a stake in the ground. Aflea is sitting on top of the stake
1. 4 answers
2. asked by Taylor
3. 761 views
A length of organ pipe is closed at one end.If the speed of sound is 344 m/s, what length of pipe is needed to obtain a
1. 1 answer
2. asked by Aaron
3. 753 views
Explain clearly in detail the difference of the summation of n=1 to infinity of 1/n^2; and the integral of 1/x^2dx with the
1. 1 answer
2. asked by Alex
3. 751 views
According to the Journal of Irreproducible Results, any obtuse angle is a right angle! Here istheir argument. Given the obtuse
1. 1 answer
2. asked by Jewel
3. 750 views
Rolaids once ran a national advertising campaign in which it claimed that Rolaids consumes 47times its own weight of excess
1. 0 answers
2. asked by Anonymous
3. 723 views
If three employees were randomly selected, what is the probability that all three are male?
1. 2 answers
2. asked by Debbie
3. 719 views
Can you please help me check the grammar in the following sentences and tell me if the alternatives in brackets are possible?
1. 1 answer
2. asked by Franco
3. 714 views
5 Part Question:6 timed runs were made along route A with an average of 95 minutes and a standard deviation of 10.5 minutes.
1. 2 answers
2. asked by Moe
3. 698 views
hi, im in the 9th grade and i need help I need help with my math. the following questions are?we are learning parallel lines and
1. 2 answers
2. asked by shanen desir
3. 687 views
Youth Criminal Justice Act essay?Thesis: The YCJA should be strictly enforced, if it is to be successful. Give 4 possible body
1. 1 answer
2. asked by Fred
3. 671 views
How many millimoles of H+ are present in 1.00 L of 1.24 M CF3CO2H solution?
1. 1 answer
2. asked by andy
3. 665 views
sorry i forgot add the questionThe freezing point of a solution is A. lower than the freezing point of the solvent alone because
1. 1 answer
2. asked by phys
3. 655 views
One reason carbon monoxide (CO) is toxic in that it bind to the blood protein hemoglobin morestrongly than oxygen does. The
1. 1 answer
2. asked by Johannie
3. 653 views
Unit 1 Individual ProjectDeliverable Length: 2-3 paragraphs Details: The proprietors of two businesses, L.L. Sams Company and
1. 1 answer
2. asked by Anonymous
3. 650 views
How many ways are there of spelling out “ABRACADABRA” by traversing the following diamond, always going from one letter to
1. 3 answers
2. asked by Tigger
3. 647 views
what is the shape of the candle flame?To me it looks kind of like a leaf--more like a teardrop. Am I correct? where does the wax
1. 2 answers
2. asked by Sara
3. 624 views
I am stuck on the final paper for this class. I am not really sure what is expected. The directions don't make sense to me.o
1. 3 answers
2. asked by Tina
3. 610 views
Hi, I was wondering if someone could clear this up for me. Anodes and cathodes. Which is which?I'm getting mixed information
1. 2 answers
2. asked by Anonymous
3. 609 views
33. Simplify a^5/a^3a^2? Because I think when it's like that you subtract the two powers. Simplify sqrt of a^2 How do you do
1. 3 answers
2. asked by mysterychicken
3. 604 views
The monthly payments on an 8-year loan compounded monthly at 4.75% are $100. What was the original amount of the loan?
1. 6 answers
2. asked by Thara!
3. 603 views
Why do you think it was that people did not pay attention to the conditions in the factories and political corruption until the
1. 1 answer
2. asked by marry
3. 596 views
Given Interest Rate3.75% Compounded Quarterly Equivalent Interest Rate _?_% Compounded Semi-annually formula is:
1. 1 answer
2. asked by Thara!
3. 582 views
When I sing into a microphone, suppose I produce a sound intensity level (SIL) of 40 dB. If you can sing at 60 dB, what is the
1. 0 answers
2. asked by naomi
3. 576 views
Using a " Cause and effect map" illlustrate a rapid and slow change caused by molten rock and it's effect on Earth's surface and
1. 1 answer
2. asked by Uzair Amin
3. 569 views
how many bases are in a sphere?
1. 1 answer
2. asked by Jared
3. 569 views
An object is located 25cm in front of a +6.00 lens, where is the image? is it real or virtual?
1. 1 answer
2. asked by Noelle
3. 562 views
When I sing into a microphone, suppose I produce a sound intensity level (SIL) of 40 dB. If you can sing at 60 dB, what is the
1. 1 answer
2. asked by naomi
3. 554 views
In the game of Incan basketball, a points are given for a free throw and b points are given for afield goal, where a and b are
1. 0 answers
2. asked by Thumper
3. 537 views
Find a positive integer m such that1/2m is a perfect square and 1/3m is a perfect cube. Can you find a positive integer n for
1. 0 answers
2. asked by Sunny
3. 537 views
Simplify, help pleasesqrt-3 + sqrt27
1. 0 answers
2. asked by teri
3. 533 views
Where is constructive interference in a standing wave?
1. 1 answer
2. asked by anna
3. 532 views
How many electrons are transferred in the production of 6.06×10^−4 mol H2(g) from water?
1. 2 answers
2. asked by Jenna
3. 524 views
In a random sanple of 500 students, 80% say they have a part-time job. An approximate 95% confidence interval for the proportion
1. 1 answer
2. asked by Yumna
3. 515 views
when finding the factors for 841 what is the largest factor you would have to test?
1. 1 answer
2. asked by Bob
3. 513 views
4. For the curve with y = -2x3 + x - 6, find:(b.) the gradient at the point (-1, -5) (c.) the equation of the tangent line at
1. 2 answers
2. asked by David
3. 505 views
consider a pair of planets that find that the distance between then is decreased by a factor of 5. Show that the force between
1. 0 answers
2. asked by Me
3. 504 views
Hey!Where can I find a COMPLETE listing of 1950's scripts/screenplays? Thanks!
1. 3 answers
2. asked by catherine
3. 502 views
4. To what set of numbers does 7.543 belong?a. rational b. irrational c. integer A? -MC
1. 1 answer
2. asked by mysterychicken
3. 494 views
Simplify#54 -�ã18c * �ã-2c(cubed) #62 yi�ã-16y(sq)+ �ã16y(sq) - y(sq)i�ã-9
1. 3 answers
2. asked by brenna
3. 493 views
Consider a rectangular array of dots with an even number of rows and an even number of columns. Color the dots, each one red or
1. 0 answers
2. asked by Teddie
3. 486 views
Can you please tell me step by step on how to do this problem. Factoring by grouping:ab-5a-15+3b Thank You
1. 1 answer
2. asked by Lilian
3. 482 views
What type of fallacy statement The president's agenda has been derailed by out of touch right-wing extremist lies spread by
1. 1 answer
2. asked by Antonette
3. 459 views
Post part 2....sq root sign = < need to know how to simplify? 40. 2<-24*(-<-54) 42. i<-98 - <98
1. 0 answers
2. asked by Brenna
3. 458 views
20. Find the quotient: (-100) divided by (-25)4?
1. 1 answer
2. asked by mysterychicken
3. 454 views
I appreciate the help. i take the class online and we get 70 problems a day to do.sqrt = < sign #46. <-r^5/2 * <-2/r^3 #50
1. 0 answers
2. asked by Brenna
3. 451 views
, list and explain two specific measurements sociologists utilize to calculate and/or analyze prejudice. Be specific as to the
1. 2 answers
2. asked by Anonymous
3. 444 views
What does this quote mean?Not all who wander are lost. Thanks -MC
1. 1 answer
2. asked by mysterychicken
3. 439 views
What are identifing fallacies
1. 1 answer
2. asked by com 205
3. 427 views
Is OB Mod a form of manipulation?
1. 0 answers
2. asked by Babyboo
3. 424 views

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