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2012
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Questions Asked on April 27, 2012

28. You are surveying students to find out their opinion of the quality of food served in the school cafeteria. You decide to
1. 80 answers
2. asked by jksl
3. 11,131 views
a 65-kg ice skater moving to the right with a velocity of 2.50m/s throws a .150kg snowball to the right with a velocity of
1. 3 answers
2. asked by Sarah
3. 6,334 views
On July 15, 2004, NASA launched the Aura spacecraft to study the earth's climate and atmosphere. This satellite was injected
1. 3 answers
2. asked by Amber
3. 4,867 views
4NH3(g)+5O2(g) yield 4NO(g)+6H2O(g)Deduce the equilibrium constant expression for the reaction.
1. 2 answers
2. asked by John
3. 4,834 views
at the bottom of a loop the speed of an airplane is 400 mph. this causes a normal acceleration of 9 g ft/sec^2, determine the
1. 2 answers
2. asked by aaa
3. 4,639 views
1.0 M aqueous solutions ofAgNO3 , Cu(NO3 )2 and Au(NO3 ) 3 are electrolyzed in the apparatus shown, so the same amount of
1. 1 answer
2. asked by James
3. 3,712 views
a particle moves on a circular path of 20 ft radius so that its arc distance from a fixed point of the path is given by s= 4
1. 2 answers
2. asked by aaa
3. 3,524 views
two carts with masses of 10.0kg and 2.5kg move in opposite directions on a frictionless track, with speeds of 6.0m/s and 3.0m/s
1. 2 answers
2. asked by Sarah
3. 3,190 views
Three students order a pizza that they want to split evenly. They decide to cut it with 2 parallel lines. If pizza has a
1. 1 answer
2. asked by Chris mullen
3. 2,760 views
an empty jar weighs 1.43 pounds. How much will it weigh when 1.00L of homgenized milk is poured into it? trhe density of
1. 3 answers
2. asked by RoseBud
3. 2,679 views
Ethylene glycol, C2H6O2, is used as antifreeze for automobile engines. If you want to produce 2.00 kg of ethylene glycol from
1. 2 answers
2. asked by Maggie
3. 2,559 views
A relative density bottle has a mass of 40g when empty, 90g when filled with water and 80g when filled with oil. Calculate the
1. 9 answers
2. asked by isaac
3. 2,432 views
Consider a process in which an ideal gas is compressed to one-sixth of its original volume at constant temperature. Calculate
1. 2 answers
2. asked by Jematormal91
3. 2,343 views
If there are 12 candidates in a city election. The winner will be the mayor and the runner up will be the vice mayor. How many
1. 1 answer
2. asked by Lisa
3. 2,264 views
A cone is created from a paper circle with a 90° sector cut from it. The paper along the remaining circumference of the circle
1. 2 answers
2. asked by Alan
3. 2,117 views
I am sorry. I do not understand this question. It has been only an year since I came to America and I have hard time
1. 1 answer
2. asked by Delhi
3. 1,972 views
an empty glass tube weights 37.3 g. when filled to the rim with water is weighs 54.1g. what is the volume of the glass tube?
1. 3 answers
2. asked by RoseBud
3. 1,870 views
Why does a change in pH usually produce a change in the ability of an enzyme to act as a catalyst?A. When the pH changes, the
1. 1 answer
2. asked by krystal
3. 1,727 views
A dog chasing a rabbit, which has a start of 45m, jumps 3m every time the rabbit jumps 2m. In how many leaps does the dog
1. 4 answers
2. asked by Rezu
3. 1,686 views
What is the equation of an ellipse with a vertex of (0, 3) and a co-vertex of (-2 , 0)?i think its 9x^2+4y^2=36...not sure
1. 2 answers
2. asked by sam
3. 1,527 views
What is the net charge on Phe-Asp at each pH?a. pH 1 b. pH 7 c. pH 14
1. 1 answer
2. asked by krystal
3. 1,514 views
A pig farmer wants to enclose a rectangular area and then divide it into six pens with fencing parallel to one side of the
1. 2 answers
2. asked by Christie
3. 1,495 views
A large rock that weighs 164.0 N is suspended from the lower end of a thin wire that is 3.00 m long. The density of the rock is
1. 1 answer
2. asked by anonymous
3. 1,478 views
assume adults have an IQ score that are normally distrubted with a mean of 105 and standard deviation of 20A) find the
1. 2 answers
2. asked by VICTORIA
3. 1,353 views
A swimming pool in the shape of an ellipse is modeled by x^2/324+y^2/196=1, where x and y are measured in feet.Find the shortest
1. 2 answers
2. asked by sam
3. 1,353 views
The solubility of NH4CL is 50g/100g of water at 50°C. How many grams of NH4CL will dissolve in 20 g of water?
1. 3 answers
2. asked by Ay3
3. 1,339 views
Calculate the total amount of heat (in calories) that would be required to convert 15.0 g of ice at 0 oC to 15.0 g of steam at
1. 2 answers
2. asked by david drame
3. 1,307 views
Please could someone help me with this question.5 arguments for wild farms and 5 argumets against wild farms. thankyou for
1. 1 answer
2. asked by Kim
3. 1,306 views
A bike design company has determined that when X hundred bicycles are built, the average cost per bike is given by
1. 0 answers
2. asked by Alexis2
3. 1,270 views
Write an equation in standard form for the hyperbola with center (0,0), vertex(4,0) , and focus (8,0).1) x^2/64-x^2/16=1
1. 2 answers
2. asked by sam
3. 1,251 views
1)Expand and simplify. Express each equation in standard form.a) f(x) = -2(x-1)(x+4)(x+1)(x-3) b) f(x) = (x+2)(x+1)(x+4) c) f(x)
1. 3 answers
2. asked by sandra
3. 1,232 views
I need some information on China's modern genocides and crimes against humanity staying the 20th century.
1. 1 answer
2. asked by Logan
3. 1,212 views
Calculate the concentration in parts per million (ppm) of the solute in each of the following aqueous solutions(a) 0.00500 g of
1. 1 answer
2. asked by katiy
3. 1,193 views
Using the change-in-oxidation-number method, balance the redox reaction below. Show your work; partial credit will be given.NO2�
1. 1 answer
2. asked by Anonymous
3. 1,171 views
A heliox deep-sea diving mixture delivers an oxygen partial pressure of 0.20 atm when the total pressure is 13.0atm .What is the
1. 1 answer
2. asked by Jessica
3. 1,170 views
Hydrogen atoms are excited to the stationary state designated by the principal quantum number, n= 4. What will be the number of
1. 2 answers
2. asked by Wube
3. 1,162 views
Help me to write these answer question, Write an essay that illustrate the saying every cloud has a silver lining in 340 words
1. 1 answer
2. asked by David
3. 1,162 views
a. What is the net charge on valine at pH 1?b. at pH 7? c. at pH 14?
1. 0 answers
2. asked by krystal
3. 1,160 views
Bayside Insurance offers two health plans. Plan A pays $90 + 40%. Plan B pays $140 + 35%. Giselle would savfe with plan B if she
1. 0 answers
2. asked by Natalie
3. 1,153 views
The reaction (nitrogen monoxide reacts with hydrogen gas to form nitrogen gas and water vapor) is believed to take place in
1. 0 answers
2. asked by Crystal
3. 1,152 views
any state auto insurance company took a random sample of 370 insurance claims paid out during a 1-year period. the average claim
1. 1 answer
2. asked by b
3. 1,152 views
1.Find the height to the nearest foot of a tree that makes a 50-foot shadow when a 2 ft. 6 in. pole is used to make a shadow of
1. 2 answers
2. asked by Tammy
3. 1,150 views
1. Suppose the distribution of birth weights of babies born at Big General Hospital is normal. If the mean weight is 7.5 lb. and
1. 0 answers
2. asked by Linda
3. 1,146 views
The reaction (nitrogen monoxide reacts with hydrogen gas to form nitrogen gas and water vapor) is believed to take place in
1. 0 answers
2. asked by Crystal
3. 1,142 views
What are the co-vertices of the ellipse 3x^2+2y^2=72?thank you....
1. 2 answers
2. asked by amy
3. 1,136 views
Create a 12- to 15 slide Microsoft® PowerPoint® presentation for your chosen geologic feature.Address the following: ·
1. 3 answers
2. asked by sweetbev
3. 1,128 views
am in need of help with my final project in Geology. I have to create a 12-15slide powerpoint presentation on Factors and Forces
1. 1 answer
2. asked by sweetbev
3. 1,124 views
Need to unscramble letters of a geography phrasesaiwnsgiem it is two words _ _ _ _ _ _ _ _ _ _ Can you help figure?
1. 0 answers
2. asked by Jenay
3. 1,102 views
Which of the following pairs believed that all people are driven by self-interest?A.Bentham and Machiavelli B.Bentham and Mill
1. 0 answers
2. asked by yong
3. 1,089 views
A sociologist is studying marriage customs in a rural community in Denmark to determine the age of the woman at the time of her
1. 1 answer
2. asked by b
3. 1,088 views
Three students order a pizza that they want to split evenly. They decide to cut it with 2 parallel lines. If pizza has a
1. 0 answers
2. asked by Chris mullen
3. 1,082 views
A solution of .12 mol/L of phosphoric acid completely neutralizes .20L of a solution of sodium hydroxide with.a concentration of
1. 1 answer
2. asked by Kelly
3. 1,061 views
How do u simplify . Express final answer using positive exponents.2^3= (B^4)^-3=
1. 2 answers
2. asked by tae
3. 1,034 views
Evaluate the following limits after identifying the indeterminate form. Use Hospital's rule.d) lim x_0+ (xe^(2x) + 1)^(5/x) e)
1. 1 answer
2. asked by Tommy
3. 1,033 views
I'm supposed to find the average value of the function over the given interval.f(x) = sin(nx), interval from 0 to pi/n, where n
1. 2 answers
2. asked by Anna
3. 1,024 views
Find the annual amount of FICA at a 7.51% rate by computing his annual salary.Sam Takagi Weekly salary: $435.16 Not
1. 0 answers
2. asked by Emily
3. 1,019 views
How tall is a man that casts a shadow at the same time a 40 ft. building casts a 60 ft shadow?
1. 1 answer
2. asked by Anonymous
3. 1,018 views
a 78kg hockey player standing on frictionless ice throws a 6.0kg bowling ball horizontally with a speed of 3.0m/s. With what
1. 1 answer
2. asked by Sarah
3. 1,017 views
If the protection itself were the sole basis for a society's morality, which of the following laws would that society want
1. 2 answers
2. asked by yong
3. 1,009 views
determine if these lines are parallel, perpendicular, or neither2x+5y=8 and 5x+2y=2
1. 0 answers
2. asked by Ashley
3. 1,007 views
A stone is thrown straight down from the edge of a roof, 750 feet above the ground, at a speed of 7 feet per second.A.
1. 0 answers
2. asked by zac
3. 995 views
Calculate the percent by mass of the solute in each of the following aqueous solutions.(a) 5.10 g of NaBr in 78.2 g of solution
1. 1 answer
2. asked by katiy
3. 980 views
If an object is thrown vertically upward with an initial velocity of v, from an original position of s, the height h at any time
1. 1 answer
2. asked by Billy
3. 969 views
The differing goals of the Fed and Congress represent which type of problem?
1. 2 answers
2. asked by dijah
3. 967 views
y = 1 + (x-1)^(1/2)Considering the interval (2,4), calculate delta(y) and dy. would delta(y) be: delta(y) = f(4) - f(2) = (1 +
1. 0 answers
2. asked by Jeremy
3. 951 views
Using the half-reaction method, balance the redox reaction below. Show your work; partial credit will be given.I- + Br2 → IO3-
1. 2 answers
2. asked by Anonymous
3. 945 views
Solve:- 5ax+6by=28 , 3ax+4by=18 using cross multiplication method
1. 1 answer
2. asked by Ashley
3. 906 views
(a) What is the frequency of a photon whose energy is 3.5 times the rest energy of an electron? (b) What would be the linear
1. 1 answer
2. asked by joe
3. 898 views
if the pH of rain water is 5.6 on average what is the concentration of carbonic acid in rain water?
1. 2 answers
2. asked by Anonymous
3. 881 views
For each of the following precipitation reactions, calculate how many grams of the first reactant are necessary to completely
1. 1 answer
2. asked by Aaron
3. 875 views
What mass of solid potassium nitrite would need to be dissolved in 500. mL of 0.40 M HNO2 to make 500. mL of a NO2−/HNO2
1. 1 answer
2. asked by Anonymous
3. 860 views
a farmer moves along the boundary of a square field of side 10 meter in 40 seconds. what will be the magnitude of displacement
1. 3 answers
2. asked by afrin
3. 860 views
3.42 grams of Ba(OH)2 is placed in a flask, dissolved in water, and titrated with an HCI solution. It is found that 25.0mL of
1. 1 answer
2. asked by Leonarda
3. 850 views
Critically discuss 8 ways in which the environmental problem(teenage pregnancy)impacts on our community
1. 2 answers
2. asked by Terry
3. 840 views
The area of a rectangular piece of fencing is represented by the equation w(4w+4)=3, where w is the width of fencing in yards.
1. 4 answers
2. asked by stan
3. 839 views
a. What is the net charge on valine at pH 1?b. at pH 7? c. at pH 14?
1. 0 answers
2. asked by krystal
3. 838 views
What is 3 radical 250 expressed in simplest radical form ?
1. 1 answer
2. asked by yamileks rodriguez
3. 838 views
if the pH of rain water is 5.6 on average what is the concentration of carbonic acid in rain water?
1. 1 answer
2. asked by Anonymous
3. 819 views
1,Why do autotrophs always occupy the lowest level of ecological pyramids?2.Explain how the growth of one population can bring
1. 0 answers
2. asked by john
3. 816 views
I have (10) questions in History (HIS-204).1. What is Leon Czolgosz most remembered for? (Points : 1) Anarchism Assassination
1. 4 answers
2. asked by Anonymous
3. 803 views
(ppm and ppb are sooo not easy for me to get)cA saturated solution of PbCO3 contains 0.00011 g PbCO3 in 100. g of water. What is
1. 1 answer
2. asked by john
3. 789 views
A pendulum consist of a particle P of mass m, attached to one end of a model string of length l=2.85m. The other end of the
1. 0 answers
2. asked by Anonymous
3. 788 views
doing a presentation on biomedical issue abortion. Can you help me with Explaining the organizations eithica and social
1. 4 answers
2. asked by Archie
3. 751 views
I have trouble understanding of this article and how to answer the questions given. I just started new to school in Toronto; I
1. 3 answers
2. asked by Erol
3. 749 views
A voltaic cell is made with aluminum and zinc electrodes. (For Ag+(aq) + e- → Ag(s), E0 = 0.80 V and for Cu2+(aq) + 2e- →
1. 0 answers
2. asked by Anonymous
3. 732 views
Consider a process in which an ideal gas is compressed to one-sixth of its original volume at constant temperature.Calculate the
1. 1 answer
2. asked by Jematormal91
3. 720 views
Most community water supplies have 0.50 ppm of chlorine added for purification.What mass of chlorine must be added to 134.0 L of
1. 2 answers
2. asked by john
3. 719 views
Suppose that 50.0mL of 0.240M sulfric acid requires 36.0mL of KOH solution to reach its endpoint. What is the molarity of the
1. 2 answers
2. asked by Leonarda
3. 693 views
N2+2H2=N2H4 What is the concentration of H2 at equalibrium when (N2)=.033 and (N2H2)= .042 M? Keq=5.29
1. 5 answers
2. asked by kendra
3. 682 views
If an object is thrown vertically upward with an initial velocity of v, from an original position of s, the height h at any time
1. 0 answers
2. asked by Nancy
3. 680 views
Find the area of the partial circle, use 22/7 for pi.1.) radius = 27 cm find the area of 1/5 of the circle 2.) diameter = 29 ft
1. 2 answers
2. asked by Ele
3. 677 views
What are the possible values of the azimutal quantum number for an electron in the 4f subshell?
1. 1 answer
2. asked by Wube
3. 651 views
a 3.5kg rifle fires a 5gram bullet with a muzzle speed of 300m/s. What is the recoil speed of the rifle?
1. 2 answers
2. asked by Sarah
3. 646 views
I am SO STUCK on this problem... PLEASE HELP ASAP!!!Suppose Kevin and Jill both deposit $4000 into their personal accounts. If
1. 1 answer
2. asked by Need Help!!!
3. 644 views
Express the series 11 + 18 + 27 +...+ 171 using sigma notation.Usually you would take 27-18 and that's the step between numbers,
1. 0 answers
2. asked by Tabby
3. 644 views
A sample of water is analyzed and found to contain 18.6 ppb of arsenic. If a person were to drink 2.0 L of this water per day
1. 1 answer
2. asked by john
3. 643 views
this is not a linear equationsJeffrey's Bank Account Week Balance 1 $10 2 $24 3 $38 4 $52 5 $66 6 $80 using the infomation from
1. 1 answer
2. asked by jj
3. 637 views
500 J of heat are added to 59 g of water initially at 20°C.(a) How much energy is this in calories? (b) What is the final
1. 1 answer
2. asked by Mandi
3. 635 views
Determine the emf for the cell noted below. (For Co3+(aq) + e- → Co2+(aq), E0 = 1.80 V, and for Na+(aq) + e- → Na(s), E0 =
1. 0 answers
2. asked by Anonymous
3. 630 views
identify and describe one environmental problem that causes ill health,crises,accidents,and disasters within your community or
1. 4 answers
2. asked by peter
3. 626 views

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