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Questions Asked on March 5, 2010

An empty rubber balloon has a mass of 0.012kg. the balloon is filled with helium at 0 degrees celcius, 1 atm pressure, and a
1. 7 answers
2. asked by Taylor
3. 8,623 views
How many moles of glucose, C6H12O6, can be "burned" biologically when 10.0 mol of oxygen is available?
1. 3 answers
2. asked by meg
3. 7,427 views
A solution is prepared by dissolving 15.0 g of NH3 in 250.g of water. The density of the resulting solution is 0.974 g/ml. The
1. 1 answer
2. asked by CC
3. 5,258 views
Calculate the molality of a 2.50 molarity NaCl solution. Density of solution = 1.08 g/ml.
1. 2 answers
2. asked by Anonymous
3. 5,116 views
A -3.0 nC charge is on the x-axis at x = -10 cm and a +4.0 nC charge is on the x-axis at x = 20 cm.At what point or points on
1. 1 answer
2. asked by JOTHEY
3. 4,123 views
A rocket tracking station has two telescopes A and B placed 1.9 miles apart. The telescopes lock onto a rocket and transmit
1. 1 answer
2. asked by Anonymous
3. 4,004 views
A particle of mass m is shot with an initial velocity vector v i and makes an angle θ with the horizontal, as shown below. The
1. 5 answers
2. asked by emath
3. 3,780 views
In rhombus DEFG, if m<DEF=60, and the shorter diagonal DF has a length of 7, find the length of the side of a rhombus.
1. 4 answers
2. asked by Chris
3. 3,419 views
Br2 + 5F2 --> 2BrF5How many molecules Br2 react with 1.11 x 10^20 molecules F2? I got 2.21 x 10^47 but I feel that's too big and
1. 5 answers
2. asked by Ana
3. 3,390 views
a 1.50 kg book is sliding along a rough horizontal surface. At point A it is moving at 3.21 m/s, and at point B it has slowed to
1. 3 answers
2. asked by Jud
3. 3,114 views
The figure belowshows an arrangement of 15 identical disks that have been glued together in a rod-like shape of length L =
1. 2 answers
2. asked by Jake
3. 2,831 views
I am having a bit of difficulty getting the net equation and the net ionic equation and the net ionic equation. I think I have
1. 2 answers
2. asked by Amanda
3. 2,649 views
In 1909, Robert Millikan performed an experiment involving tiny, charged drops of oil. The drops were charged because they had
1. 2 answers
2. asked by Syeda
3. 2,644 views
Iron(III) oxide is formed when iron combines with oxygen in the air. How many grams of Fe2O3 are formed when 16.7 g of Fe reacts
1. 5 answers
2. asked by meg
3. 2,594 views
A lottery has a grand prize of $180,000, two runner-up prizes of $22,500 each, eleven third-place prizes of $3600 each, and
1. 2 answers
2. asked by Cecylia
3. 2,512 views
A merry-go-round rotates at the rate of.2rev/s with an 80kg man standing at a point 2m from the axis ofrotation. (A)What is the
1. 2 answers
2. asked by Justin
3. 2,347 views
When iron rusts in air, iron(III) oxide is produced. How many moles of oxygen react with 2.4 mol of iron in the rusting
1. 2 answers
2. asked by meg
3. 2,241 views
What types of intermolecular forces allow CO2 to dissolve in water? Do CO2 and H20 have a relatively strong or weak attraction?
1. 4 answers
2. asked by Aidan
3. 1,915 views
In printing an article of 48,000 words, a printer decides to use two sizes of type. Using thelarger type, a printed page
1. 2 answers
2. asked by Raphael Martins
3. 1,613 views
Over July 16, 1882, a massive thunderstorm over Dubuque, Iowa, produced huge hailstones. The diameter of some of the hailstones
1. 4 answers
2. asked by Joy
3. 1,581 views
How many liters of hydrogen gas are needed to react with CS2 to produce 1.25 L of CH4 at STP?
1. 1 answer
2. asked by meg
3. 1,532 views
Two coins are taken at random (without replacement) from a bag containing 4 nickels, 8 dimes, and 3 quarters. Let X denote the
1. 2 answers
2. asked by Cecylia
3. 1,450 views
Which of the following equations has the given solution set?Solution set: Ø A)-2m + 5 = 2m + 5 B)-2m + 5 = -2m + 5 C)-2m + 5 =
1. 1 answer
2. asked by nicky
3. 1,375 views
What are three ways human resources help support the strategic goals of human service organizations
1. 3 answers
2. asked by sheena
3. 1,374 views
Students at Euler Middle School are talking about ways to raise money for a school party. One student suggests a game called
1. 2 answers
2. asked by susan
3. 1,359 views
CH3CH3-C-CH3 CH3CH2CH2-C-CH2CH2CH2CH3 CH3 give the IUPAc name for this compound? is it 4-methyl-4-tert-methyloctane?
1. 1 answer
2. asked by chemistry
3. 1,350 views
The perimeter of a tennis court is 228 ft. The length is 42 ft longer than the width. Write a set of linear equations.
1. 2 answers
2. asked by Anonymous
3. 1,339 views
How many moles of aluminum are needed to react completely with 2.4 mol of FeO?
1. 1 answer
2. asked by meg
3. 1,336 views
if a particle has work of 8J and doubles its speed. how much work it has done? Can we still determine work in this problem
1. 3 answers
2. asked by eng
3. 1,335 views
What is the current yield of a annual coupon bond with a 6% coupon, four years until maturity, and a price of $750?
1. 1 answer
2. asked by Kevin
3. 1,329 views
URGENT help!3. A rock sample was dated using potassium-40, Neasyrenebt ubducated tgat 1/8 of the original parent isotope is left
1. 1 answer
2. asked by Anon
3. 1,324 views
On a sunny day in an estuary, the surface irradiance is 1.6*10^17 photons cm^-2 s^-1. What is k if the irradiance is 7.3*10^13
1. 2 answers
2. asked by Krysten
3. 1,287 views
Why do we need to use amount in moles to solve stoichiometry problems? Why can't I just convert from mass to mass?I'm not sure
1. 2 answers
2. asked by Ana
3. 1,285 views
A stereo amplifier creates a 3.5 V potential difference across a speaker.To double the power output of the speaker, the
1. 2 answers
2. asked by JOTHEY
3. 1,285 views
The atmosphere contains about 6.8×1013 moles of ozone. If this amount of ozone gas iscompressed into a thin layer around the
1. 1 answer
2. asked by HELP!!!!!
3. 1,257 views
20. One difference between a gastrovascular cavity and a one-way digestive system is the presence or absence ofa. cell
1. 0 answers
2. asked by mysterychicken
3. 1,247 views
Use an associative property to write an equivalent expression.2r + (19s + 22)
1. 1 answer
2. asked by mike
3. 1,189 views
An economy is facing the recessionary gap shown in the accompanyingdiagram. To eliminate the gap, should the central bank use
1. 1 answer
2. asked by Yzenetra Adams
3. 1,181 views
Analyze the chemical reactions that take place when a biological catalyst combines with a reactant (substrate) to form an
1. 1 answer
2. asked by Anonymous
3. 1,120 views
a business lady leaves her laundry every Monday, then picks it up the next monday as she drops off more. If she wears a clean
1. 1 answer
2. asked by lisa
3. 1,117 views
In hopes that this will actually get answered--Match the terms with the appropriate descriptions. Digestive Excretory Skeletal
1. 1 answer
2. asked by mysterychicken
3. 1,096 views
What is the instantaneous acceleration (both magnitude and direction) due to the coriolis force on an object moving at 160 m
1. 0 answers
2. asked by Krysten
3. 1,087 views
Aluminum reacts with sulfuric acid to produce aluminum sulfate and hydrogen gas. How many grams of aluminum sulfate would be
1. 1 answer
2. asked by meg
3. 1,087 views
If you have 24 grams of an unstable atom with a half life of 5,000 years, how many grams would be left after 15,000 years
1. 2 answers
2. asked by aida
3. 1,080 views
In chemistry, for a given substance what information links mass to moles? number of particles to moles?
1. 1 answer
2. asked by Ana
3. 1,070 views
Determine the equation of the graph in the form y = acos(bx).I will try and describe the Graph. -It starts at the origin (0,0)
1. 1 answer
2. asked by Jill
3. 1,063 views
What does rule of thumb evaluation method mean? no matter how many times i read this, I get different answers..and how would I
1. 0 answers
2. asked by anonymous
3. 1,058 views
The kinetic energy of a rolling billiard ball is given by {\rm{KE}} = 1/2\,mv^2 . Suppose a 0.17-{\rm kg} billiard ball is
1. 2 answers
2. asked by john
3. 1,046 views
I have to list the majority and minority leader of both the house and senate:House majority -Steny Hoyer House minority -John
1. 2 answers
2. asked by Sue
3. 1,040 views
Use the fundamental identities to simplify the expression.tan^2 Q / sec^2 Q sin^2/cos^2 / 1/cos^2 = sin^2 / cos^2 times cos^2 /
1. 1 answer
2. asked by Hannah
3. 1,024 views
Which type of stoichiometric calculation does not require the use of the molar mass?
1. 0 answers
2. asked by meg
3. 1,022 views
Dramatic irony occurs when a reader or an audience notices something that a character in the story or play does not know.what
1. 1 answer
2. asked by trish
3. 1,017 views
At a spot in the ocean, the surface irradiance is 7.8*10^16 photons and k=.14 m^-1. At what depth does the euphotic zone end?
1. 0 answers
2. asked by Krysten
3. 1,012 views
Control activities and monitoring are one and the same. T or F
1. 0 answers
2. asked by Lea
3. 1,009 views
trying to start my own business selling televisions and need help coming up with business names.
1. 0 answers
2. asked by bryan
3. 998 views
Two coins are taken at random (without replacement) from a bag containing 7 nickels, 5 dimes, and 6 quarters. Let X denote the
1. 1 answer
2. asked by Cecylia
3. 995 views
In a fit of pique, the Canadians fire a cannonball due south from vancouver (lat 49.2 degrees N) at a randomly picked city (39.4
1. 1 answer
2. asked by Krysten
3. 981 views
Which of the following equations has the given solution set?Solution set: Ø A)-2m + 5 = 2m + 5 B)-2m + 5 = -2m + 5 C)-2m + 5 =
1. 1 answer
2. asked by Anonymous
3. 971 views
Please check and correct my answers for the following multiple choice questions:1-For Tesla, a new firm that makes an electric
1. 4 answers
2. asked by Linda
3. 952 views
Why are current clothing styles generally more expensive than classic styles?a.current styles are better quality items b.classic
1. 3 answers
2. asked by pam
3. 946 views
Why do you go to a museum?I go there to watch works of art. I go there to look at works of art. I go there to see works of art.
1. 1 answer
2. asked by rfvv
3. 931 views
How many moles of H3PO4 are produced when 142.0 g P4O10 reacts completely to form H3PO4?
1. 1 answer
2. asked by meg
3. 927 views
5.6 x 10 the the 5th power
1. 1 answer
2. asked by Barb
3. 925 views
The new school has exactly 1000 students and 1000 lockers.On the first day all the students meet outside and agree on the
1. 1 answer
2. asked by HALIS
3. 924 views
Is there anyone familiar with course230/Ethical Issues in Human Services???
1. 0 answers
2. asked by sally
3. 918 views
Which of the following would eliminate the variable on the left side of the given equation?36 - 19w = -6w + 41 A)add -19w B)add
1. 2 answers
2. asked by Anonymous
3. 908 views
three brothers try to divide some cookies. The oldest brother gets half of the cookies and half of a cookie. The middle brother
1. 1 answer
2. asked by JOhn
3. 908 views
If you want a response to persist and resist extinction once it has been learned,you need to reinforce it:a)only as a secondary
1. 3 answers
2. asked by vedrana
3. 905 views
Which of the following equations has the given solution set?Solution set: Ø A)-2m + 5 = 2m + 5 B)-2m + 5 = -2m + 5 C)-2m + 5 =
1. 4 answers
2. asked by Anonymous
3. 896 views
1. I like oil paintings better than watercolors.2. I like oil painting better than water colors. (Which one is correct, #1 or
1. 1 answer
2. asked by rfvv
3. 894 views
If √2cos(x)-1 = (1+√3)/2 and √2cos(x)+1 = (1-√3)/2, find the value of cos4x.
1. 7 answers
2. asked by sh
3. 892 views
if alpha centauri were to all of a sudden disappear, we wouldn't knknow 4 another 4.3 years. How come? Why would this be the
1. 2 answers
2. asked by Sara
3. 883 views
An alpha particle (mass 6.6 x 10^-24 grams) emitted by radium travels at 3.4 x 10^7 plus or minus 0.1 x 10^7 mi/h.(a) What is
1. 1 answer
2. asked by Samantha
3. 879 views
Show the changes to the T-accounts for the Federal Reserve andfor commercial banks when the Federal Reserve buys $50 million in
1. 0 answers
2. asked by Yzenetra Adams
3. 878 views
You are given three cups of liquids that look identical. Use the sequence words - first, next, after, and finally - to explain
1. 1 answer
2. asked by LeeAnne
3. 877 views
Perform the addition or subtraction.tanx - sec^2x/tanx tan^2(x)/tan(x) - sec^2x/tanx = tan^2x sec^2x / tanx then I use the
1. 1 answer
2. asked by Hannah
3. 824 views
A 100kg mass is connected to a 200kg mass by a massless rope. The two masses rest on a frictionless surface. A (massless)rope is
1. 2 answers
2. asked by Anonymous
3. 820 views
I need a opening line which will grab my reader's attention right away.Here are some examples: *"I was on fire" *"Everybody
1. 6 answers
2. asked by Sara
3. 819 views
Relative to people at the turn of the nineteenth century, people today spendA.a larger percentage of their income on clothing B.
1. 1 answer
2. asked by pam
3. 819 views
For which table(s) of values in Exercises 39–42 is the relationshiplinear? Tell how you decided. Write the equation for each
1. 2 answers
2. asked by Nicole
3. 804 views
i been stuck on a question for awhilewhat is the theme of this short story "he-y come on ou-t" i couldn't figure out what is the
1. 0 answers
2. asked by needhelpbadly
3. 782 views
a hoop of radius .5 m & mass .2 kg is released from rest & rolls down an inclined plane. how fast is it moving when it has
1. 1 answer
2. asked by Anonymous
3. 782 views
According to attribution theory,Americans are likely to blame others' first when something goes wrong,but will point to their
1. 2 answers
2. asked by vedrana
3. 780 views
looking for some adaptations the chinese golden pheasant might have made
1. 0 answers
2. asked by spencer
3. 776 views
3-D Shape Assignment Build a three dimensional shape and prepare a set of questions to be presented to the class for problem
1. 2 answers
2. asked by alicia
3. 754 views
Perform the multiplication and use the fundamental identities to simplify.(cotx + cscx)(cotx-cscx) I know that you have to foil
1. 1 answer
2. asked by Hannah
3. 745 views
HOW MANY SYLABLES DOES THE WORD RESPONSIBLE HAVE ?
1. 1 answer
2. asked by LINDA
3. 734 views
Can some one help me with this art question. Not sure what exactly it is asking for.1) Look at Las Meninas by Diego Velázquez
1. 1 answer
2. asked by jen
3. 697 views
The assignment says to describe 2 approaches to measure patient outcome. I have read the chapter several times and I am still
1. 5 answers
2. asked by Very Confused
3. 696 views
Could you check these thanksDirections: Vrai or faux? Part 1 1. Aux Etats-Unis chaque municipalité a son bureau de poste.
1. 2 answers
2. asked by Laura
3. 695 views
Find the value of tan2x, (pi/2)<x<pi, given secx=-5/4.So cosx=-4/5? I've no clue what to do next.
1. 2 answers
2. asked by sh
3. 685 views
How does the unique realtionship between human service oragnizations and the populations they serve impact ethical decisions?
1. 6 answers
2. asked by sally
3. 675 views
Use the fundamental identities to simplify the expression.csc Q / sec Q so this would be 1/sinx / 1/cosx and then 1/sinx times
1. 1 answer
2. asked by Hannah
3. 666 views
can someone take me through this vector combination question pleasean airplane is observed to be flying at a speed of 600km/h.
1. 3 answers
2. asked by jake
3. 664 views
What is the net force of 25n downward and 45n upward?
1. 1 answer
2. asked by Kim
3. 657 views
how could you find the circumference of many different circles with a calculator without punching in 3.14 for every problem?
1. 1 answer
2. asked by colton
3. 654 views
Give the volume of the solid generated by revolving the region bounded by the graph of y=ln(x), the x-axis, the lines x=1 and
1. 1 answer
2. asked by josh
3. 646 views
Use the fundamental identities to simplify the expression.csc Q / sec Q so this would be 1/sinx / 1/cosx and then 1/sinx times
1. 1 answer
2. asked by Hannah
3. 638 views
How did human history in North America during the period described in the Prologue differ from the events of Asia, Eurasia, and
1. 2 answers
2. asked by christopher
3. 631 views
The effectiveness of monetary policy depends on how easy it isfor changes in the money supply to change interest rates. By
1. 0 answers
2. asked by Yzenetra Adams
3. 626 views

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