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2012
April

Questions Asked on April 1, 2012

Use the Law of Sines to solve for all possible triangles that satisfy the given conditions. (If an answer does not exist, enter
1. 2 answers
2. asked by John
3. 9,315 views
At 22 °C an excess amount of a generic metal hydroxide M(OH)2, is mixed with pure water. The resulting equilibrium solution has
1. 5 answers
2. asked by Miaow
3. 8,821 views
i need some help understanding this problem please.How many moles of O are there in 32.4g N2O5, how many oxygen and nitrogen
1. 3 answers
2. asked by Mary
3. 5,209 views
A 140 g arrow is shot vertically from a bow whose effective spring constant is 500 N/m. If the bow is drawn 60 cm before
1. 1 answer
2. asked by ian
3. 4,593 views
A carousel with a 50-foot diameter makes 4 revolutions per minute.a) Find the angular speed of the carousel in radians per
1. 2 answers
2. asked by Emily
3. 3,949 views
Fe(s) + H2O(g)<-> FeO(s) + H2(g)Calculate K for the above reaction, using the information which follows. H2O(g) + CO(g)<-> H2(g)
1. 2 answers
2. asked by antonio
3. 3,731 views
A tow truck is connected to a 1500 kg car by a cable that makes a 27 degree angle to the horizontal. If the truck accelerates at
1. 2 answers
2. asked by ian
3. 3,009 views
A new process is started, and the sum of the sample standard deviations for 25 subgroups of size 4 is 750. If the specifications
1. 1 answer
2. asked by Tera
3. 2,874 views
Write a balanced equation for the neutralization of each of the following. Express your answer as a chemical equation. Identify
1. 2 answers
2. asked by Lisa
3. 2,828 views
What is the [H3O+] for a neutral solution at 50 degrees celsius?I know that kw=[H3O+][OH-] but I am not sure what to do to get
1. 2 answers
2. asked by Hannah
3. 2,804 views
A 7.25 inch circular saw blade rotates at 5200 revolutions per minute.a) Find the angular speed of the saw blade in radians per
1. 1 answer
2. asked by Emily
3. 2,598 views
The following equilibrium was studied by analyzing the equilibrium mixture for the amount of H2S produced.Sb2S3(solid)+3H2(gas)<
1. 1 answer
2. asked by Laffy Taffy
3. 2,588 views
An equilibrium mixture of SO2, O2, and SO3 at 1000 K contains the gases at the following concentrations: [SO2] = 3.77 10-3
1. 3 answers
2. asked by antonio
3. 2,536 views
A solution of an unknown monoprotic weak acid was titrated with 0.100 M NaOH. The equivalence point was reached when 37.48 ML of
1. 1 answer
2. asked by Keith
3. 1,997 views
A car is at velocity of 20 km/h. If the car traveled 120 km in 3 hours at constant acceleration, what is its final velocity?
1. 3 answers
2. asked by Anonymous
3. 1,905 views
A hydraulic press has an input cylinder 1 m in diameter and an output cylinder 2 meters in diameter. Assuming 100% efficiency,
1. 1 answer
2. asked by Anonymous
3. 1,891 views
A 200-mL sample of Oxygen gas is collected at 26 degrees C and a pressure of 690 torr. What volume will the gas occupy at STP (0
1. 1 answer
2. asked by Kayla
3. 1,883 views
ok in the example it shows: ¿Comprendes espanol? Si, lo comprendeok for this question it's asking 1) do you and your siblings
1. 3 answers
2. asked by help
3. 1,855 views
Would you expect PbCl2 to dissolve in dilute HNO3(aq)?Explain in terms of solubility (Ksp)/equilibrium?
1. 1 answer
2. asked by Kevin
3. 1,845 views
write an equation of an ellipse:Major axis 12 units long and parallel to the y-axis, Minor axis 8 units long, center at (-2,5)
1. 2 answers
2. asked by kelsey
3. 1,810 views
According to the following reaction, how many grams of zinc hydroxide will be formed upon the complete reaction of 29.8 grams of
1. 2 answers
2. asked by Anonymous
3. 1,631 views
the dimensions of a closed rectangular box are measured as 30 in, 40 in.. and 60 in.. with a maximum error of 0.2 in. in each
1. 1 answer
2. asked by jhon
3. 1,629 views
A uniform horizontal wire with a linear mass density of 0.48 g/m carries a 1.9 A current. It is placed in a constant magnetic
1. 1 answer
2. asked by bob
3. 1,590 views
Use the half-angle formulas to come up with an exact expression for each function value below. You do not have to simplify your
1. 1 answer
2. asked by Help
3. 1,553 views
A 185kg refrigerator is loaded into a van by moving it up a 10.0m long frictionless ramp that is at an angle of 11.0 degrees.
1. 1 answer
2. asked by Marilyn
3. 1,497 views
The drawing shows two identical systems of objects; each consists of the same three small balls connected by massless rods. In
1. 0 answers
2. asked by Beth
3. 1,480 views
ExperimentNa2C2O4 is added to Pb(NO3)2.Precipitate forms (I think its PbC2O4). After the liquid above was decanted to another
1. 3 answers
2. asked by Andy
3. 1,467 views
you are riding your bike at 9km/h. ten minutes later; your speed is 6km/hr.
1. 4 answers
2. asked by Britt
3. 1,443 views
Which of the following solution should be mixed with 50.0 mL of 0.050 M HF solution to make an effective buffer?A) 50.0 mL of
1. 2 answers
2. asked by Anon
3. 1,429 views
A light string of length a is attached to two points A and B on the same level and distance b apart, where b < a. A smooth ring
1. 1 answer
2. asked by John
3. 1,361 views
if the solutions of f(x)=0 are -1 and 2, then the solutions of f(x/2) = 0 are
1. 1 answer
2. asked by anon
3. 1,357 views
A giant tortoise can live 175 years in captivity. The gastrotrich, which is a small aquatic animal, has a life span of only 3
1. 1 answer
2. asked by Michelle
3. 1,343 views
Q)'The radio crackled as the distant voice spluttered and died.Now they felt completely alone., but surely there must be others
1. 1 answer
2. asked by Parveen
3. 1,339 views
Of the 300 tickets 240 were sold to sixth grade studentss What percent of the total number of tickets sold were sold sixth grade
1. 2 answers
2. asked by Leslie
3. 1,316 views
The ratio of girls to boys in a science class is 5:6. Can there be 15 boys in the class? Explain why or why not.
1. 2 answers
2. asked by tyler
3. 1,212 views
Compute the compound quarterly amount after 1 year for $100 invested at 12% interest compounded quarterly. What simple interest
1. 1 answer
2. asked by matt
3. 1,193 views
Solve the equation 2sin(2x) = cos x.and Solve the equation cos^2(2x)–sin^2(2x)= (√3 / 2).
1. 2 answers
2. asked by Help
3. 1,183 views
Estimate the cost of the concrete requred to make a concrete sidewalk shaped as follows.(The sidewalk covers 1/4 of the outer
1. 1 answer
2. asked by Javi
3. 1,181 views
I'm looking for a job that you write a story, poem, etc. and create an art work for a magazine and you get paid. FOR TEENS AND
1. 6 answers
2. asked by Laruen
3. 1,173 views
A football coach claims that the average weight of all the opposing teams’ members is 225 pounds. For a test of the claim, a
1. 2 answers
2. asked by Anonymous
3. 1,157 views
What is the equilibrium constant for the reaction of ammonium ion with formate ion?I know that the ionization constant for
1. 0 answers
2. asked by Hannah
3. 1,153 views
Dianna used 5/6 yd of fabric to cover a bulletin board.She use 4/9 yd of fabric to decorate a vase. How many yards of fabric did
1. 1 answer
2. asked by gary
3. 1,111 views
what part of speech is "then" in this sentence: the old lady pulled her spectacles down and looked over them about the room then
1. 4 answers
2. asked by Mbaintu
3. 1,063 views
please helpSimplify Multiply (2�ã7-4�ã2)(5�ã7+10�ã2)
1. 1 answer
2. asked by Lavern
3. 1,056 views
Which 0.10M solution has the lowest pH?NaCl, KCN, LiF, RbClO, all have the same pH. I think that the answer is that they all
1. 3 answers
2. asked by Hannah
3. 1,043 views
If you add 5.0 mL of 0.50 M HCl solution to 20.0 mL to Buffer C, what is the pH of the buffer? (where buffer C is 8.203 g sodium
1. 1 answer
2. asked by Alex
3. 1,002 views
Suppose f(x) is a differentiable function with f(-1)=2 and f(2)=-1. The differentiable function g(x) is defined by the formula
1. 0 answers
2. asked by Lin
3. 987 views
Is this how I right this formula for dichlorodiaquoplatinum (II)(PtCl2(H2O)2)
1. 1 answer
2. asked by Debbie
3. 971 views
I am having trouble answering this. please help!Q: Cereol is a newly discovered compound in corn flakes. A biologist suspects
1. 1 answer
2. asked by Maddy
3. 964 views
A typical human newborn weighs 150lbs, while a newborn weighs approx 7lbs. An adult Western grey Kangaroo weighs about 30
1. 5 answers
2. asked by Michelle
3. 961 views
Two blocks with masses m1 = 7 kg and m2 = 4 kg are connected with arope and move on two surfaces of a right-angled wedge as
1. 2 answers
2. asked by Ahmad
3. 940 views
Balance each of the following neutralization reactions. Express your answer as a chemical equation. Identify all of the phases
1. 1 answer
2. asked by Lisa
3. 906 views
what pressure, in atmosphere, is exerted by 0.52 mol of water vapor at its boiling point of 100 degrees celcius in a 3L
1. 1 answer
2. asked by Terri
3. 899 views
Complete and balance the equations for each of the following reactions. Express your answer as a chemical equation. Identify all
1. 1 answer
2. asked by Lisa
3. 889 views
Determine the mimimum furnace output for a 2100 sq feet modern house using the formula B=31a
1. 1 answer
2. asked by Charles
3. 889 views
Is there any irony in the short story The Whirligig Of Life? If so, what are some examples?
1. 1 answer
2. asked by LeiLani
3. 880 views
potatoes chickensMICHELLE 200 PER YEAR 50 PER YEAR jAMES 80 PER YEAR 40 PER YEAR What is michelles opportunity cost of p
1. 0 answers
2. asked by wendy
3. 865 views
Josh kicks a soccer ball with an initial velocity of 18 feet per second out of a window from a height of 12 feet. The function
1. 2 answers
2. asked by Rach
3. 859 views
Is this the correct formula for dichlorotetramminechromium (III) nitrate?(CrCl2(NH3)4 NO3)
1. 1 answer
2. asked by Debbie
3. 815 views
Sqrt(-24) Show work.
1. 1 answer
2. asked by sherry
3. 792 views
Consider a concave mirror with a focal lengthof 14.04 cm. b) Find the image distance when the object distance is 7.02 cm c) Find
1. 1 answer
2. asked by angel
3. 787 views
Writeacher, the website you suggested to me for reading comprehension is excellent but the texts are too short. They should be
1. 1 answer
2. asked by Matthew
3. 753 views
Please helpSolve �ã9x+67=x+5
1. 4 answers
2. asked by Lavern
3. 753 views
DESCRIPTIVE WRITINGA song or piece of music comes to the radio. Immediately the tune reminds you of a particularly happy or sad
1. 1 answer
2. asked by Zaki
3. 749 views
Davey reads 45 pages in an hour. Sally reads 55 pages in an hour. If Davey begins to at 2pm and Sally starts to read at 2:40pm,
1. 2 answers
2. asked by Michelle
3. 749 views
Discuss the role of stakeholders in quality and risk management including the relationships between employers and third party
1. 0 answers
2. asked by irene
3. 748 views
What trade-offs must a firm make in developing a long-range capacity plan?How does capacity planning differ from manufacturing
1. 1 answer
2. asked by Anonymous
3. 736 views
Give the following for the function: y=2+cos(5x+3.14Amplitude: Period: Phase Shift:
1. 2 answers
2. asked by Emily
3. 734 views
The average of two numbers is 34. The first number is three times the second number. what are the two numbers?
1. 1 answer
2. asked by Anne
3. 732 views
Jane needs $30,000 to buy another car in eight years. How much should she deposit at the end of each half year into an account
1. 1 answer
2. asked by lynn
3. 727 views
You are traveling in a car toward a hill at a speed of 40.8 mph. The car's horn emits sound waves of frequency 243 Hz, which
1. 13 answers
2. asked by sara
3. 719 views
A few more things.Thank you.“Why don’t we go to the seaside for the weekend?” he asked (us). He proposed going to the
1. 1 answer
2. asked by Matthew
3. 714 views
Science Hw - TB pg 621Reviewing Vocab. 1-10 Checking Concept 1-10 I'm on reviewing vocab. qs. 8 and I'm having trouble with this
1. 4 answers
2. asked by Laruen
3. 709 views
Calculate Earth's force of gravity on each of two steel balls of masses 6.0kg and 12.0kgI the forces of gravity on the 12-kg
1. 2 answers
2. asked by melissa
3. 703 views
In a conversion from military to peacetime use, a missile with a maximum horizontal range of 170 is being adapted for studying
1. 2 answers
2. asked by Anonymous
3. 690 views
Balance each of the following neutralization reactions. Express your answer as a chemical equation. Identify all of the phases
1. 1 answer
2. asked by Lisa
3. 687 views
A dentist's chair with a patient in it weighs 2260 N. The output plunger of a hydraulic system begins to lift the chair when the
1. 1 answer
2. asked by Howie
3. 682 views
a class reacts 50.00ml samples of 0.200 mol/L potassium phosphate solution with an excess of 0.120 mol/L lead(II) nitrate
1. 0 answers
2. asked by tryme00
3. 673 views
Using the concentration of CH3COOH (0.8326M) and the equilibrium concentration of H3O+ (OJ = 31.6x10^-6 and milk = 3.16x10^-8),
1. 1 answer
2. asked by Lisa
3. 646 views
Benzoic Acid (HC6H5OO, 122.0 g/mol) has a Ka = 6.3 x 10-5. What is the pH of a solution that has 3.050 g of benzoic acid in
1. 1 answer
2. asked by Anonymous
3. 644 views
A drainage system for a 40 acre field is designed to remove 3/8 inch of standing water from the entire field in 24 hours.What
1. 2 answers
2. asked by Nabil
3. 642 views
A 124- balloon carrying a 22- basket is descending with a constant downward velocity of 27.4 A 1.0- stone is thrown from the
1. 0 answers
2. asked by salem
3. 631 views
What are the advantages and disadvantages to Italy of having such diverse regions? 2 of each- disadvantages, and advantages
1. 2 answers
2. asked by i♥zee
3. 627 views
I need some help with making a solubility rule for CrO4 -2 for my chemistry homework.
1. 3 answers
2. asked by Debbie
3. 620 views
find the approximate change in z when the point (x,y) changes from (1,1)to (1.01, 0.90)f(x,y) = xe^(-y) + ye^(-x)
1. 1 answer
2. asked by jhon
3. 616 views
If the grades on a police entrance exam are normally distributed with a mean of 100 and a standard deviation of 15, what
1. 1 answer
2. asked by Laura
3. 616 views
In a chemical analysis, 3.40g of silver nitrate in solution reacted with excess sodium chloride to produce 2.81g of precipitate.
1. 1 answer
2. asked by gambit
3. 600 views
A new process is started, and the sum of the sample standard deviations for 25 subgroups of size 4 is 750. If the specifications
1. 0 answers
2. asked by Tera
3. 600 views
In an experiment, Marissa must select a letter card below and spin the spinner once.A B C D 1 2 3 What is the probability that
1. 1 answer
2. asked by john
3. 587 views
Below the human hemoglobin sequence are the first thirty amino acid sequences of several other species’ hemoglobins.Inspect
1. 0 answers
2. asked by Kim
3. 584 views
How do earthquakes occur at faults?
1. 1 answer
2. asked by Barbie
3. 581 views
You are traveling in a car toward a hill at a speed of 40.8 mph. The car's horn emits sound waves of frequency 243 Hz, which
1. 3 answers
2. asked by sara
3. 577 views
A particle of weight W is attached by a light inextensible string of length a to a point A on a verticle wall. The particle is
1. 0 answers
2. asked by Tony
3. 575 views
I left out the following sentences.Can you please check them, too? 1) “Congratulations for passing your driving test”, Peter
1. 1 answer
2. asked by Matthew
3. 571 views
Troy is building a pool that is proprtional to an olympic-sized pool the width of his pool will be 625 centimeters find the
1. 2 answers
2. asked by Lisa
3. 565 views
I have the fetal pig test on muscles in AP biology class coming up soon. And I was wondering if anyone knows any good online
1. 1 answer
2. asked by Samantha
3. 564 views
Hemoglobin (Hb) in the blood absorbs oxygen to form oxyhemoglobin [Hb(O2)2], which transports oxygen to the cells. The
1. 0 answers
2. asked by Laffy Taffy
3. 563 views
Which of the following contrbuted to the heavy soil erosion in italy?a. volcanic activity b. heavy rainfall c. over farming d.
1. 8 answers
2. asked by i♥zee
3. 547 views
Hemoglobin (Hb) in the blood absorbs oxygen to form oxyhemoglobin [Hb(O2)2], which transports oxygen to the cells. The
1. 0 answers
2. asked by Laffy Taffy
3. 546 views
The average cab ride cost per mile(x) is given by f(x)=2x+3.50, where x is miles and f(x) is money.A. Find the cost of a 5 mile
1. 1 answer
2. asked by Raul
3. 545 views

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