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2011
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Questions Asked on October 31, 2011

(a) Calculate the molarity of a solution that contains 0.175 molZnCl2 in exactly 150 mL of solution. (b) How many moles of HCl
1. 4 answers
2. asked by Anon
3. 13,640 views
A fence is to be built to enclose a rectangular area of 220 square feet. The fence along three sides is to be made of material
1. 1 answer
2. asked by Olivia
3. 11,878 views
Find the exact area of the surface obtained by rotating the curve about the x-axis.y = sqrt(1 + 5x) from 1 ≤ x ≤ 7
1. 6 answers
2. asked by Michael
3. 10,366 views
A 28.0 block is connected to an empty 2.20 bucket by a cord running over a frictionless pulley. The coefficient of static
1. 2 answers
2. asked by xxx
3. 7,732 views
An aqueous solution of an unknown solute is tested with litmuspaper and found to be acidic. The solution is weakly conducting
1. 2 answers
2. asked by Anon
3. 6,972 views
to push a 25 kg crate up a 27 incline, a worker exerts a force of 120 N, parallel to the incline. As the crate slides 3.6 m, how
1. 3 answers
2. asked by amy
3. 5,533 views
a chemical engineer placed 1.520 g of a hydorcarbon in the bomb of a calorimeter. The bomb was immersed in 2.550 L of water and
1. 2 answers
2. asked by Tori
3. 5,345 views
calculate the molarity of acetic acid in a vinegar sample,knowing that 5.00ml of vinegar requires 43.50ml of 0.105 M NaOH to
1. 2 answers
2. asked by denis
3. 3,931 views
what is the molarity of a solution prepared by dissolving 2.24 grams of NaOH in enough deionized water to obtain 500.0ml of
1. 1 answer
2. asked by denis
3. 3,048 views
when 2.13 moles of C3H8 burn in excess oxygen, how many moles of CO2 will be formed? Assume this is a complete combustion
1. 1 answer
2. asked by christopher
3. 2,750 views
Why does tee fly backwards after teeoff?
1. 1 answer
2. asked by Peter Howe
3. 2,630 views
A person suffering from hyponatremia has a sodium ion concentrationin the blood of 0.118 Mand a total blood volume of 4.6 L.What
1. 2 answers
2. asked by Anon
3. 2,617 views
Hydrogen sulfide is an impurity in natural gas that must be removed.One common removal method is called the Claus process, which
1. 1 answer
2. asked by Jen
3. 2,293 views
Use Equation 7.1 and assuming that core electrons contribute 1.00 and valence electrons contribute nothing to the screening
1. 1 answer
2. asked by Amanda
3. 2,283 views
Glycine amide hydrochloride (BH+) FM 110.54, pKa 8.20Glycine amide (B) FM 74.08 b.) How many grams of glycine amide should be
1. 1 answer
2. asked by Ken
3. 2,199 views
the equation of motion is given for a particle, where s is in meters and t is in seconds. find the acceleration after 2.5
1. 1 answer
2. asked by Lee
3. 2,078 views
1) How do you usually quote the title of a chapter within a book? Thank you.Example: Jonathan Swift (author) Gulliver’s
1. 2 answers
2. asked by Henry2
3. 2,063 views
Suppose that you follow the size of a population over time. When you plot the size of the population versus time on a semilog
1. 2 answers
2. asked by Erica
3. 2,056 views
Is it quantitatively acceptable to titrate all KHC8H4O4 samples with the NaOH solution to the same dark red endpoint ?Explain.th
1. 2 answers
2. asked by limit
3. 2,005 views
6.67 mL of 18.0 molar sulfuric acid solution was dissolved in enough water to make 500 mL of solution. The molarity of the
1. 1 answer
2. asked by Anonymous
3. 2,002 views
The distribution of heights of adult males has a mean of 69 inches and a standard deviation of 4 inches. A random sample of 36
1. 1 answer
2. asked by Monique
3. 1,809 views
Use Equation 7.1 and assuming that core electrons contribute 1.00 and valence electrons contribute nothing to the screening
1. 3 answers
2. asked by Kyle
3. 1,734 views
Before the force is applied (t < 0 on the graph), the particle moves along the X axis with velocity V1 = -7.6 m/s. Find the
1. 1 answer
2. asked by Amy
3. 1,638 views
Consider the last electron in B: Values for n,l,and ml of 2,0,0 cannot be used. Why not?so is this the same answer as lithium.
1. 2 answers
2. asked by Hannah
3. 1,613 views
Consider a 90% confidence interval for μ. Assume σ is not known. For which sample size n=10 or n=20, is the confidence
1. 2 answers
2. asked by Morgan
3. 1,593 views
every yellow marble is expensive.one -half the orange marbles are expensive.one -half of all expensive marbles are yellow. there
1. 3 answers
2. asked by phil
3. 1,535 views
find the centroid of the plane region bounded by the curves y = cos x, y=sinx, x=0,
1. 1 answer
2. asked by zoe
3. 1,525 views
How many grams of glycine amide (FM 74.08) should be used with 1.0 gram of glycine amide HCl (FM 110.54, pKa=8.20) to give 100
1. 4 answers
2. asked by Ken
3. 1,444 views
If y(x-1)=z then X =
1. 1 answer
2. asked by iris
3. 1,425 views
A pitcher throws a baseball to a batter at 95 mph from a distance, d, away. The batter swings and hits the ball. (5280 ft = 1
1. 4 answers
2. asked by Skyler
3. 1,404 views
Farmer Tom Hedges anticipates taking 100,000 bushels of oats to the market in three months. The current cash price for oats is
1. 1 answer
2. asked by Tee
3. 1,402 views
A cylinder with a movable piston holds 2.75 mol of argon gas at a constanttemperature of 295 K. As the gas is compressed
1. 1 answer
2. asked by Matthias Schwartzkopf
3. 1,401 views
A 95 kg rowboat is initially at rest, until it is pulled toward the dock with a rope with a tension of 30.0 N. The dock is
1. 1 answer
2. asked by Todd
3. 1,375 views
Calculate the frequency of a photon of orange light whose wavelength is 6.2*10^5m. (meters)
1. 2 answers
2. asked by rob
3. 1,325 views
Please help!! I have no idea how to do this question.14. A sample of 40 CD’s from your collection showed a mean length of
1. 0 answers
2. asked by Kristi
3. 1,296 views
Find the numbers that each letter stands for. EFGHx4=HGFEE= F= G= H=
1. 1 answer
2. asked by Daniel
3. 1,294 views
The weight of dry acid are measured to the nearest milligram; however the volume of water in which it is dissolved is never a
1. 1 answer
2. asked by Lamis
3. 1,274 views
What does it mean when we say that KHC8H4O4 is not hygroscopic ?thank for helping~
1. 2 answers
2. asked by limit
3. 1,269 views
the limit represents the derivative of some function f at some number a. state f and a.lim (sin(pai/2 + t)-1)/t t->0
1. 1 answer
2. asked by Lee
3. 1,248 views
what is 13 6/7 coverted to a decimal rounded to the nearest hundredth?
1. 2 answers
2. asked by Patty Cook
3. 1,247 views
At issue in the twenty-first century is the trade-off between the necessity of writers, musicians, artists, and movie studios to
1. 3 answers
2. asked by yanilexy rodriguez
3. 1,223 views
Is this a rational, irrational, or not a real number the square root of 49 and the square root of -81
1. 1 answer
2. asked by Lisa
3. 1,217 views
Give equations to show how sulfuric acid can convert 4-methylcyclohexene into a mixture of four isomeric c7H12
1. 2 answers
2. asked by Vivian
3. 1,194 views
One end of a massless coil spring is suspended from a rigid ceiling. It is found that when a 4 kg mass is suspended from it the
1. 3 answers
2. asked by Andrea
3. 1,193 views
Does the KE of a car change more when itaccelerates from 27 km/h to 37 km/h or when it accelerates from 37 km/h to 47 km/h? 1.
1. 1 answer
2. asked by Mathew
3. 1,187 views
A planet with a mass of (7*10^21) kg is in a circular orbit around a star with a mass of (2*10^30) kg. The planet has an orbital
1. 0 answers
2. asked by mymi
3. 1,151 views
why is the toxicity of (+)-carvone in rats is about 400 times greater than that of(-)-carvone?
1. 1 answer
2. asked by stephie
3. 1,142 views
A child sits down on one end of a horizontal seesaw of negligible weight, 2.14 m from the pivot point. No one balances on the
1. 4 answers
2. asked by Kellie
3. 1,140 views
This is my first stats class and I don't know how to do this, could you please help me? Thank you.You are asked to determine the
1. 0 answers
2. asked by Melvin
3. 1,124 views
rectangle is inscribed between the x-axis and the parabola y=16-x^2 wiht one side along the x-axis as shown below
1. 1 answer
2. asked by khallid
3. 1,123 views
Divide 25 in two parts such that its product is 126
1. 5 answers
2. asked by Neetu
3. 1,117 views
1. The problem statement, all variables and given/known dataA ride in an amusement park consists of a cylindrical chamber that
1. 0 answers
2. asked by nully
3. 1,113 views
While riding a Ferris wheel, the rider determines that the Ferris wheel makes 1.5 revolutions per minute.a) knowing that the
1. 2 answers
2. asked by Adam
3. 1,112 views
Consider the production function Q= 20K^(1/2)L^(1/2). The firm operates in the short run with 16 units of capital.a. The firm's
1. 1 answer
2. asked by Catherine
3. 1,107 views
Could you please revise the following sentences, please?1) As a matter of fact, two among our science teachers are willing to
1. 1 answer
2. asked by Henry2
3. 1,097 views
A carefully designed experiment can measure the gravitational force between masses of 9 kg. Given that the density of iron is
1. 0 answers
2. asked by mymi
3. 1,078 views
If there are as many rational numbers as there are irrational numbers then the set of all irrational numbers is infinite
1. 1 answer
2. asked by Bob
3. 1,072 views
I really need your help to revise a paragraph on Asian cheetahs. I'll post a part each time.1) The Asian cheetah, once common in
1. 1 answer
2. asked by Henry2
3. 1,065 views
As a system increases in volume, it absorbs 52.5 J of energy in the form of heat from the surroundings. The piston is working
1. 0 answers
2. asked by Amanda
3. 1,060 views
Im 13 in the 8th grade and i need help on figurinmg out simularites between mitosis and meosis please help thanks :]
1. 4 answers
2. asked by lala
3. 1,054 views
Determine the structure of the compound by using the IR and 1H NMR of a spectra that has the molecular formula: C4H8O2
1. 2 answers
2. asked by jennel
3. 1,043 views
Newton was holding an apple of mass 120 g and thinking about the gravitational forces exerted on the apple by himself and by the
1. 0 answers
2. asked by mymi
3. 1,032 views
A comet is traveling towards the earth. The comet has a mass of 5.50E+12 kg and a radius of 323 m. The comet is traveling with a
1. 0 answers
2. asked by Jerry
3. 1,028 views
Which of the following solutions is the most basic? (a) 0.6 M NH3, (b) 0.150 M KOH, (c) 0.100 M Ba(OH)2. Explain.
1. 1 answer
2. asked by Jen
3. 1,008 views
show that the lines x^-4xy+y^=0 and x+y=1 form an equilateral triangle and find its area
1. 2 answers
2. asked by prateek
3. 997 views
Of 30 books (15 novels, 10 history books and 5 math books), how many ways can you get a bunch of four books to give to a friend?
1. 0 answers
2. asked by Edgar
3. 993 views
A student is taking a literature course in which four tests are given. To get a B, he must average at least 80 on the four
1. 4 answers
2. asked by Liz
3. 974 views
The rate (in mg carbon/m3/h) at which photosynthesis takes place for a species of phytoplankton is modeled by the functionP =
1. 0 answers
2. asked by Anonymous
3. 960 views
i am doing a project on pneumonia. i need to answer the following questions in a proper sentence.1. does pneumonia affect both
1. 2 answers
2. asked by Baily
3. 939 views
Immediate help needed for the following two questions: 15-12A. (Break-even point) You are a hard-working analyst in the office
1. 1 answer
2. asked by GypsyQueen
3. 929 views
A 5.0 kg block with a speed of 2.8 m/s collides with a 10 kg block that has a speed of 2.0 m/s in the same direction. After the
1. 1 answer
2. asked by Chelsey
3. 928 views
In the Earth–Moon system, there is a point where the gravitational forces balance. This point is known as the L1 point where
1. 0 answers
2. asked by mymi
3. 927 views
which statement is false about Globaliztion?Free markets are effective than government rules or national boundries are
1. 2 answers
2. asked by Bryan
3. 906 views
Let g(x) be a rational function with a numerator of 6x2 + 12x - 48 and a denominator of 2x2 - 8. Use this information to
1. 1 answer
2. asked by Brianna
3. 900 views
Working on how to factor trinomials, and the method that works best for me is the criss cross method, so Ive sticked with it.
1. 11 answers
2. asked by -Untamed-
3. 886 views
The rate (in mg carbon/m3/h) at which photosynthesis takes place for a species of phytoplankton is modeled by the functionP =
1. 0 answers
2. asked by Anonymous
3. 879 views
I would like my investment to double in value every 3 years. At what rate of interest would I need to invest it, assuming the
1. 2 answers
2. asked by Brianna
3. 855 views
The position function of a particle is given by s=t^3-3t^2-6t, t > =0.when does the particle reach a velocity of 66 m/s?
1. 1 answer
2. asked by Lee
3. 853 views
If two different masses have the same kinetic energy, their momenta are:a. proportional to the squares of their masses b.
1. 1 answer
2. asked by Anonymous
3. 847 views
What minimum speed does a 170 g. puck need to make it to the top of a 6.0 m. long, 27 frictionless ramp?
1. 2 answers
2. asked by Sandrine Parent
3. 847 views
1. What does 'the time taken to reach completion decreases if 20cm^3 of hcl containing 4mol/dm^3' means? How to work out to find
1. 1 answer
2. asked by StuartKess
3. 830 views
A discount store takes 50% off of the retail price of a desk. For the store's holiday sale, it takes an additional 20% off of
1. 1 answer
2. asked by iris
3. 821 views
Study the data table below.A three-column table presenting the 'Melting Point and Boiling Point for Common Substances.' The
1. 2 answers
2. asked by Heather Pleasee Helppp
3. 820 views
The First National Bank of Wilson has 680 checking account customers. A recent sample of 60 of these customers showed 32 to have
1. 0 answers
2. asked by Nathalia
3. 812 views
the curve with equation 2(x^2+y^2)^2=9(x^2-y^2) is called a lemniscate. find the points on the lemniscate where the tangent is
1. 3 answers
2. asked by Lee
3. 803 views
So, My Mom was right in telling me that I was wrong in thinking it was the International Dateline. She tried to explain it to me
1. 1 answer
2. asked by Reed
3. 803 views
Meg's pension plan is an annuity with a guaranteed return of 7% interest per year (compounded monthly). She would like to retire
1. 0 answers
2. asked by Juice
3. 795 views
A person with a mass of 110 kg is standing on a scale that reads weight in newtons inside of an elevator. If the elevator
1. 1 answer
2. asked by UD
3. 776 views
1. Describe the roles and responsibilities of management and independent auditors in the financial reporting process2. Define
1. 0 answers
2. asked by Ariana
3. 764 views
Please Help? What impact did Niccolo Machiavelli have on events during his days?
1. 2 answers
2. asked by John
3. 753 views
a. Calculate the delta H, delta G, and equilibrium constant for the reaction of methane with Cl2 to give CH3Cl and HCl. Use the
1. 0 answers
2. asked by Natasha
3. 750 views
What is the topography , climate and resources of mount vernon, new york 10550
1. 1 answer
2. asked by derrick
3. 746 views
a laser beam with wavelength 632.8nm is incident normal to the plane of a diffraction grating with a slit separation d=2000nm.
1. 0 answers
2. asked by rachel
3. 730 views
if angle C of a parallelogram measures 65 degrees, what is the measure of angle D
1. 1 answer
2. asked by onu
3. 728 views
A mettallurgist decided to make a special alloy. He melted 30 grams of Au(Gold) with 30 grams of Pb. This melting process
1. 1 answer
2. asked by Eli
3. 725 views
What exactly should I write in a senior yearbook bio?
1. 3 answers
2. asked by Amy
3. 713 views
A bullet of mass 4.8 g strikes a ballistic pendulum of mass 3.3 kg. The center of mass of the pendulum rises a vertical distance
1. 1 answer
2. asked by Ellie
3. 708 views
If a ¼ of a teaspoon is 1 ml, then how many milliliters are in 6 teaspoons
1. 1 answer
2. asked by iris
3. 707 views
Using the ordinary alphabet and allowing repeated letters, find the number of words of length 8 that begin and end with T.
1. 1 answer
2. asked by Nat
3. 707 views
Write and solve a system of equations for each situation.1.Your school sells tickets for its winter concert. Student tickets are
1. 2 answers
2. asked by Shadow
3. 704 views

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