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Questions Asked on March 30, 2010

The atomic mass of Eu is 151.96. There are only two naturally occurring isotopes of europium, 151Eu with a mass of 151.0 and
1. 1 answer
2. asked by Kumar
3. 8,203 views
Is the compound C2H3Cl polar or nonpolar and why?
1. 1 answer
2. asked by Kathleen
3. 5,568 views
Write a balanced chemical equation for nitrogen gas reacts with oxygen gas to produce nitrogen dioxide gas
1. 2 answers
2. asked by Elizabeth
3. 4,676 views
a compound has an empirical formula of C3H5O2 and a molar mass of 145,14g. what is the molecular formula of this compound?
1. 4 answers
2. asked by Sammi
3. 3,405 views
Guy wires 80 feet long support a 65-foot tall telephone pole. To the nearest degree, what angle will the wires make with the
1. 3 answers
2. asked by Roslyn
3. 2,923 views
Explain whether C2H3Cl is polar or non-polar and why? Explain how electronegativity is applied to the answer.
1. 1 answer
2. asked by John
3. 2,698 views
Coulomb measured the deflection of sphere A when spheres A and B had equal charges and were a distance d apart. He then made the
1. 3 answers
2. asked by Sasha
3. 2,626 views
There are three isotopes of carbon differing with respect to:a. neutrons b. atomic number c. nuclear charge d. electron
1. 2 answers
2. asked by Evelyn
3. 2,351 views
I need help with this problem. I don't get how to do it or how they got that answer.A force of 50 pounds acts on an object at an
1. 1 answer
2. asked by Jane
3. 2,317 views
Bag A contains 3 white marbles and 2 red marbles. Bag B contains 6 white marbles and 3 red marbles, find the probability of
1. 3 answers
2. asked by jon
3. 2,235 views
A ferris wheel has radius of 25 m and its centre is 27 m above the ground. It rotates once every 40 seconds. Sandy gets on the
1. 3 answers
2. asked by CL
3. 2,067 views
Help with this problem please. I don't get it at all.A ship is heading due north at 12 mph. The current is flowing southwest at
1. 2 answers
2. asked by Shane
3. 2,062 views
Lowland Regions of CanadaHow was the bedrock of the lowlands formed? How thick is the bedrock in the interior plains and why is
1. 6 answers
2. asked by rebecca
3. 2,019 views
After leaving an airport, a plane flies for 1.75h at a speed of 200km/h on a course of 100 degrees. The plane then flies for 2
1. 1 answer
2. asked by Noelle
3. 1,981 views
What is the volume in liters of 15.0kg of CO2 at STP
1. 2 answers
2. asked by Louisa Lou
3. 1,839 views
A state makes auto license plates that have two letters (excluding I, 0, and Q) followed by four digits of which the first digit
1. 2 answers
2. asked by ron
3. 1,823 views
1. Why was the bison hunt so important to the Metis?Because the bison provided food for the Metis and clothes were made from the
1. 1 answer
2. asked by Cody
3. 1,809 views
An appliance store manager is ordering chest and upright freezers. one chest freezers costs $250 and delivers a $40 profit. One
1. 1 answer
2. asked by Sara K.
3. 1,763 views
We're doing gas problems in chemsitry. I have no idea where to even begin on this problem:Air is 20% oxygen and 80% nitrogen.
1. 1 answer
2. asked by Avalon
3. 1,592 views
Three electrolytic cells containing solutions of CuNO3, Sn(NO3)2, and Fe(NO3)3, respectively, are connected in series. A current
1. 1 answer
2. asked by Mark
3. 1,585 views
Find the exact value of the trigonometric function given thatsin u = 5/13 and cos = -3/5 1) sin(u-v) My teacher said to make two
1. 2 answers
2. asked by Hannah
3. 1,554 views
Electronic Timing, Inc. (ETI), is a small company founded 15 years ago by electronics engineers Tom Miller and Jessica Kerr. ETI
1. 4 answers
2. asked by babyputra
3. 1,524 views
The function s(t) = 16t^2 models the distance, s(t), in feet, that an object falls in t seconds. Find the number of seconds a
1. 1 answer
2. asked by KE KE
3. 1,448 views
A bag contains 7 red chips and 9 blue chips. Two chips are selected randomly without replacement from the bag. What is the
1. 3 answers
2. asked by Anna
3. 1,445 views
A mixture of .10 mol of NO, .050 mol of H2 and .10 mol of H20 isplaced in a 1 liter vessel at 300 K. The following equilibrium
1. 1 answer
2. asked by Thomas
3. 1,434 views
An astronomer wishes to measure on a photograph the distance between the image of a certain star and three other star images
1. 2 answers
2. asked by homer
3. 1,430 views
evidence indicates that copper is paramagnetic, but zinc is not. Explain the evidence.
1. 1 answer
2. asked by shell
3. 1,429 views
round 12 5/12 to the nearest whole number.
1. 8 answers
2. asked by mia
3. 1,423 views
In how many ways can Joe, Mary, Steve, and Brenda be seated around a round table?
1. 1 answer
2. asked by hrw
3. 1,406 views
Three electrolytic cells containing solutions of CuNO3, Sn(NO3)2, and Fe(NO3)3, respectively, are connected in series. A current
1. 1 answer
2. asked by Mark
3. 1,395 views
Determine two coterminal angles (one positive and one negative) for the given angle. Give your answer in radians.A) 8pi/9 B)
1. 0 answers
2. asked by Abbey
3. 1,356 views
A 0.47 kg pendulum bob is attached to a string 1.2 m long. What is the change in the gravitational potential energy of the
1. 7 answers
2. asked by Carden
3. 1,329 views
Write the converse of this statement.If 2 's are supplementary, then they are not equal. Converse:
1. 1 answer
2. asked by amy
3. 1,324 views
If the temperature of a confined gas is doubled at constant pressure, what change is observed?A) The volume of the gas is
1. 1 answer
2. asked by Allison
3. 1,318 views
Two charged bodies exert a force of 0.415 N on each other. If they are moved so that they are one-third as far apart, what force
1. 1 answer
2. asked by Sasha
3. 1,304 views
What is the PH of a solution that results from mixing together equal volumes of a 0.150 M Solution of acetic acid and a 0.0750 M
1. 1 answer
2. asked by Ginger29
3. 1,301 views
Define a genetic mutation and state the types of genetic mutations. Discuss the effects of genetic mutations.
1. 0 answers
2. asked by Marlene
3. 1,296 views
How much time is required to electroplate 6.530 µg of chromium from a potassium dichromate solution, by using a current of 118
1. 0 answers
2. asked by Val
3. 1,266 views
if a particle moves along a line so that at time t where t [0,pi] its position is given by s(t)=-4cost-t^2/2+10 what is the
1. 2 answers
2. asked by James
3. 1,250 views
How do I convert a percent WITH a repeating decimal to a fraction?! I need fast help plz!!
1. 10 answers
2. asked by Austin
3. 1,249 views
If 7.24 kJ of heat is applied to a 952 g block of metal, the temperature increases by 10.7 degrees Celsius. Calculate the
1. 1 answer
2. asked by Jack
3. 1,235 views
How many grams of CuSo4 x 5h20 to prepare 100 mL of a .10M solution?
1. 2 answers
2. asked by John
3. 1,223 views
Can you describe some situations in which you would have liked to exchange information between Excel and some other
1. 0 answers
2. asked by kerri
3. 1,217 views
which elements have symbols based on their latin names? Why?Gold = Aurum Lead = Plumbum Iron = Ferrum Tin = Stannum Copper =
1. 8 answers
2. asked by Sara
3. 1,202 views
convert 25 degrees c to degrees fahrenheit. please help it is due tomrrow
1. 1 answer
2. asked by bessie
3. 1,189 views
What is the difference between a viola and a violin?
1. 2 answers
2. asked by naomi
3. 1,187 views
A 40.0-kg boy, riding a 2.50-kg skateboard at a velocity of +5.30 m/s across a level sidewalk, jumps forward to leap over a
1. 1 answer
2. asked by Bren
3. 1,182 views
An amusement park's average daily attendance during its first year ofoperation in 1988 was 2046 people. since the the average
1. 1 answer
2. asked by Zahera
3. 1,180 views
A 0.26 kg rock is thrown vertically upward from the top of a cliff that is 27 m high. When it hits the ground at the base of the
1. 5 answers
2. asked by Carden
3. 1,175 views
As a result of friction, the angular speed of a wheel changes with time according todθ/dt = ω0 *e^-(σ*t) where ω0 and σ are
1. 0 answers
2. asked by eric
3. 1,163 views
John wants to dissolve his business.His balance sheet shows assets with a value of $250,000 in total. Liabilities are shown at
1. 2 answers
2. asked by Matt
3. 1,160 views
What is the domain? Use a graphing utility to determine the intervals in which the function is increasing and decreasing and
1. 0 answers
2. asked by Mark
3. 1,158 views
Select the incorrect statement about budgeting committees.A)Budgeting committees usually have responsibility for the
1. 2 answers
2. asked by zd
3. 1,150 views
A SOLUTION OF 0.05METER ACID PKA 6.10 IS MIXED WITH AN EQUAL VALUE 0.1 SODIUM SOLUTION OF SODIUM SALT WHAT IS THE PH OF THE
1. 2 answers
2. asked by ronke
3. 1,143 views
what qualities do people in todays society consider barbaric or monstrous? give a real life example
1. 1 answer
2. asked by adam
3. 1,128 views
Calculate what mass of argon gas is required to full a 20.4-L container to a pressure of 1.09 atm at 25C
1. 2 answers
2. asked by Anonymous
3. 1,128 views
The Managing Director of a well-known company on Wall Street thrives on a diet of fruit jam, bread, pasta, and coffee. She
1. 1 answer
2. asked by Marlene
3. 1,126 views
"Suggest two things a large cell might do to increase its surface area:volume ratio".The obvious method would be to divide into
1. 0 answers
2. asked by Stuck
3. 1,107 views
Using this equation: CH4(g)+2O2(g)---> CO2(g)+ 2H2O(l)What is the value of Enthalpy( triangle H) if 15.00g of O2 is reacted??
1. 1 answer
2. asked by Anonymous
3. 1,061 views
Provide an example of at least five ordered pairs that do not model a function.The domain will be any five integers between 0
1. 0 answers
2. asked by Nikki
3. 1,059 views
what stimulated the rapid discovry of new elements during the 1700s?I really don't know the answer to this question. I don't get
1. 7 answers
2. asked by Sara
3. 1,047 views
when u use different materials, what are they most likely to be made from: elements, compunds, or mixtures? Which of the three
1. 2 answers
2. asked by Sara
3. 1,044 views
darla designed a stained glass window that incorporates 20 squares, triangles, and circles altoghether. the window has 2 more
1. 1 answer
2. asked by bessie
3. 1,038 views
Help!13. Use the Distributive Property to simplify 7(6x^2 + 5x + 4) 15. Evaluate 5w^2 if w = .5 Is it 6.25? 19. Write a
1. 3 answers
2. asked by mysterychicken
3. 1,030 views
* Take about 15 index cards and a flashlight that is opaque on all sides (so that light shines only through the front) into a
1. 1 answer
2. asked by ingrid
3. 1,019 views
Figure 8-33 shows a 1.50 kg block at rest on a ramp of height h. When the block is released, it slides without friction to the
1. 0 answers
2. asked by Kelly
3. 1,014 views
A loaf of bread is normally distributed with a mean of 22 ounces and a standard deviation of .5 ounces.What is the probability
1. 2 answers
2. asked by Anonymous
3. 1,012 views
What is the domain? Use a graphing utility to determine the intervals in which the function is increasing and decreasing and
1. 1 answer
2. asked by Mark
3. 1,006 views
Thye base of a cylinder has an area of 153.86cm. the height of the cylinder is 5cm what is the volume of the cylinder
1. 2 answers
2. asked by Brianna
3. 997 views
Parts of the southern portion of the interior plains are often called Canada's 'breadbasket'. Why?What separates the Great Lakes
1. 1 answer
2. asked by rebecca
3. 983 views
A light ray strikes a flat, L = 3.7 cm thick block of glass of refractive index 1.47 in the attached figure, at an angle of È =
1. 0 answers
2. asked by mm
3. 980 views
HiPlease double check me: I had to state whether the process forms a voltaic or eletrolytic cell: YOu plug in your MP3 player to
1. 1 answer
2. asked by Kiki
3. 979 views
One gram of TNT, C7H5N3O6, has 1.33 ´ 1022 hydrogen atoms. How many carbon atoms are there in 1.00 g of TNT?
1. 1 answer
2. asked by David
3. 978 views
convert 30degress c to degrees fahrenheit please help asap it is due tomrrow
1. 1 answer
2. asked by bessie
3. 971 views
an investor is looking for 4 year investment.the share of skylark company is selling for rs 75.they have plans to pay a divedend
1. 0 answers
2. asked by rishi
3. 966 views
Write a program that will input an item’s wholesale cost and its markup percentage.The program will output the item’s retail
1. 0 answers
2. asked by Matt
3. 963 views
Electronic Timing, Inc. (ETI), is a small company founded 15 years ago by electronics engineers Tom Miller and Jessica Kerr. ETI
1. 0 answers
2. asked by babyputra
3. 956 views
what 2 things does the formula of a compound tell us?I'm not sure if I'm right, but this is what I wrote: The formula for the
1. 3 answers
2. asked by Sara
3. 943 views
a gardner wishes to encloe a rectangular 3000 square feet area with bushes on three sides and a fence on the 4th side .If the
1. 0 answers
2. asked by joelle
3. 938 views
Two percent of the circuit boards manufactured by a particular company are defective. If circuit boards are randomly selected
1. 0 answers
2. asked by Hanna
3. 935 views
a slide moves triangle abc to form a'b'c' what is the proper name of the transformation that formed a'b'c'?
1. 1 answer
2. asked by bessie
3. 934 views
Argon makes up 0.93% by volume of air. Calculate its solubility (mol/L) in water at 20C and 1.0 atm. Henry's law constant for
1. 0 answers
2. asked by Mike
3. 920 views
what is the average of these fractions? 1/12, 1/6, 1/4, 1/3, and 5/12 i need help asap due tomrrow
1. 3 answers
2. asked by bessie
3. 914 views
A neutron collides elastically with a helium nucleus (at rest initially) whose mass is four times that of the neutron. The
1. 0 answers
2. asked by Anonymous
3. 912 views
A student is given a sample in lab which contains one of the ions listed below. After adding a few drops ofsolution to part of
1. 1 answer
2. asked by Evelyn
3. 911 views
A student constructs a galvanic cell that has a strip of lead metal immersed in a solution of 0.1M Pb(NO3)2 as one half-cell and
1. 1 answer
2. asked by Mel
3. 908 views
State three examples each of acids, bases, and salts commonly used in therapeutic processes. From the examples you state, select
1. 0 answers
2. asked by Marlene
3. 893 views
Need help with these: [Can you show me the work for them please, if needed?]3. Simplify (4x)(-2y) Is the answer -8xy? 5. To
1. 3 answers
2. asked by mysterychicken
3. 861 views
Two percent of the circuit boards manufactured by a particular company are defective. If circuit boards are randomly selected
1. 0 answers
2. asked by Hanna
3. 857 views
particle 1 of mass m1 = 0.29 kg slides rightward along an x axis on a frictionless floor with a speed of 1.8 m/s. When it
1. 0 answers
2. asked by mike
3. 852 views
Find f X g , g X f , and f X ff(x) = 3sqrt x-1 g(x) = x^3 + 1 For f(x) the 3 is little above the sqrt sign. My answers were:
1. 0 answers
2. asked by Hannah
3. 837 views
The formula P = 0.64x^2 - 0.044x + 3 models the approximate population P, in thousands, for a species of fish in a local pond, x
1. 0 answers
2. asked by Anonymous
3. 836 views
Assume that triangle ABC is congruent to triangle XYZ. If AB=12cm and BC=15cm, what is the length of segment YZ?
1. 3 answers
2. asked by alondra
3. 835 views
· Complete using the financial statement below to calculate the 13 basic ratios found in the chapter. There is NO need to
1. 1 answer
2. asked by cari
3. 827 views
The principals is buying pizza for the school-wide pizza party. If there are 1852 students in the school & each student in the
1. 2 answers
2. asked by Eli
3. 827 views
* Fill 3 medium-sized bowls as follows:o Bowl 1 - with very hot (but not painfully hot) tap water o Bowl 2 - with very cold tap
1. 1 answer
2. asked by ingrid
3. 825 views
103.5 mL of hydrogen are collected over water at 22.2 degrees Celsius and 758.2 torr from reaction with 0.1356 grams of alloy.
1. 4 answers
2. asked by Paula
3. 809 views
A box with a square base and an open top is to have a volume of 68in^3 . Neglect the thickness of the material used to make the
1. 1 answer
2. asked by Haley
3. 806 views
What compounds can be formed by combinations of potassium, lithium, chlorine, and/or bromine?
1. 3 answers
2. asked by Emmy
3. 800 views
# Rub your index fingers gently over a piece of very coarse sandpaper a few times and rate its coarseness on a scale from 1
1. 1 answer
2. asked by ingrid
3. 799 views

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