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Questions Asked on April 27, 2010

How many grams of K2SO4 would you need to prepare 1500 g of 5.0% K2SO4 (m/m) solution?
1. 2 answers
2. asked by Jack
3. 7,333 views
calculate the centripetal acceleration of the earth in its orbit around the sun and the net force exerted on the earth. What
1. 2 answers
2. asked by krista
3. 6,956 views
Question 4What is a summary? a brief restatement using your own words an extended restatement that includes in-depth analysis a
1. 11 answers
2. asked by christopher
3. 5,559 views
Which is a stronger base in aqueous solution, IO- or IO3-? Explain.
1. 1 answer
2. asked by Lisa
3. 5,333 views
the measures of the interior angles of a pentagon are 2x, 6x, 4x-6, 2x-16 and 6x+2. What is the measure of the largest angle
1. 5 answers
2. asked by Dee
3. 4,669 views
if you are dealt 5 cards from a shuffled deck of 52 cards find the probability that all 5 cards are picture cards please show
1. 2 answers
2. asked by charlotte
3. 4,539 views
A violin string vibrates at 300 Hz when unfingered. At what frequency will it vibrate if it is fingered one-third of the way
1. 1 answer
2. asked by Anonymous
3. 4,280 views
The intensity of an earthquake wave passing through the Earth is measured to be 2.5×10^6 J/m^2 at a distance of 43 km from the
1. 1 answer
2. asked by Anonymous
3. 4,036 views
Question 18Of the following sources, which would provide the most in-depth information? full-text journal article from library
1. 6 answers
2. asked by christopher
3. 3,736 views
Two triangles are similar, and the ratio of each pair of corresponding sides is 2 : 1. Which statement regarding the two
1. 3 answers
2. asked by Hannah
3. 3,591 views
Which of the following substances can act as a Bronsted acid in aqueous solution? (Select all that apply.)C3H8 NH41+ HCl H2 H2O
1. 3 answers
2. asked by Sue
3. 3,582 views
A skater spins with an angular speed of 12.4 rad/s with her arms outstretched. She lowers her arms, decreasing her moment of
1. 3 answers
2. asked by Tessa
3. 3,191 views
Calculate the grams of solute required to make the following solutions.a)2500g of saline solution (0.90% NaCl (m/m)) b)0.050kg
1. 1 answer
2. asked by Kim
3. 3,126 views
An ice cube with a mass of 40.0 g melts in water originally at 25.0 degree C.a. How much heat does the ice cube absorb from the
1. 1 answer
2. asked by kim
3. 3,110 views
What is the concentration, in percent (v/v) of a solution containing 50mL of diethyl ether (C4 H10 O) in a 2.5L of solution?
1. 4 answers
2. asked by Kim
3. 3,050 views
Explain a possible way to separate a mixture of water, ethanol, and sand?
1. 4 answers
2. asked by rhon
3. 2,842 views
For the question(s) that follow, consider the following equation.2Mg + O2�¨ 2MgO How many grams of MgO are produced when 40.0
1. 2 answers
2. asked by Anonymous
3. 2,594 views
Which of the following is an accurate statement of an acceleration value, translated from symbols into words?A. 3 meters per
1. 1 answer
2. asked by Judy
3. 2,571 views
Question 1Which of the following is one reason to use quotation marks in a sentence? to show you have used someone’s exact
1. 2 answers
2. asked by christopher
3. 2,541 views
A 100 milliliter sample of 0.100-molar NH4Cl solution was added to 80 milliliters of a 0.200-molar solution of NH3. The value of
1. 6 answers
2. asked by Nicole
3. 2,330 views
find the 50th term of a sequence 11,15,19,23...a.203 b.204 c.207 d.211
1. 3 answers
2. asked by brittian
3. 2,205 views
identify the intermolecular attractions for dimethyl ether and for ethyl alcohol. which molecule is expected to be more soluble
1. 1 answer
2. asked by MollySue
3. 1,953 views
Consider the Lewis structure for the major resonance form of PCS–. (Note that carbon is the central atom.) The structure
1. 1 answer
2. asked by Mary
3. 1,930 views
why are dipole-dipole forces stronger than dispersion forces for molecules of comparable mass?
1. 1 answer
2. asked by sam
3. 1,928 views
12.These sources of information provide up-to-date and generally reliable information about current events.Newspapers and news
1. 1 answer
2. asked by christopher
3. 1,927 views
1. Find the exact value of the following (Think identity)Cos(2 Arccos(5/13)) 2. Solve the following equation for 0° ≤ Θ <
1. 2 answers
2. asked by Chris
3. 1,784 views
a 10.0mL vinegar sample was completely neutralized by 22.5mL 0.2M NaOH solution. calculate molarity and % of acetic acid in
1. 4 answers
2. asked by confused
3. 1,701 views
equilibrium constants for the following reactions4Cu(s) + O2(g) 2Cu2O(s), K1 2CuO(s) Cu2O(s) + 1/2O2(g), K2 what is K for the
1. 1 answer
2. asked by Roja
3. 1,699 views
Tuning a Cello. A cellist tunes the C-string of her instrument to a fundamental frequency of 65.4 Hz. The vibrating portion of
1. 1 answer
2. asked by Michael Moskvich
3. 1,611 views
If you shout across a canyon and hear an echo 3.6 s later, how wide is the canyon?
1. 2 answers
2. asked by paige
3. 1,575 views
three charges are fixed to an x, y coordinate system. a charge of +18 µC is on the y axis at y= +3.0 degree m. a charge of -12
1. 1 answer
2. asked by lara
3. 1,544 views
an electron is launched at a 30 degree angle with respect to the horizontal and a speed of 3.0*10^6 m/s from the positive plate
1. 1 answer
2. asked by Jordie
3. 1,520 views
If I am rolling a single dice what is the probability of rolling a number that is divisibleby 2 and 3? The only number divisible
1. 4 answers
2. asked by Bart
3. 1,459 views
consider the experiment of selecting a card froman ordinary deck of 52 playing cards and determine the probability of the stated
1. 3 answers
2. asked by Bart
3. 1,401 views
The freezing point of an aqueous solution that contains a non-electrolyte is -9.0 degrees celcious.A. What is the freezing-point
1. 1 answer
2. asked by Taylor
3. 1,398 views
Solve the triangle ABC if angle A = 76 degrees and a = 12, b = 4
1. 3 answers
2. asked by John
3. 1,383 views
for flammable liquids what is the relationship between the evaporation rate and the likelyhood that the liquid will burn?
1. 1 answer
2. asked by sam
3. 1,381 views
Yes, I did receive a response and I thank you a lot for helping me! However, as I'm not a mother-tongue speaker I still have a
1. 1 answer
2. asked by Franco
3. 1,381 views
Which of the following elements (C, B, Be, Li for both parts of the question) will have the greatest increase in ionization
1. 1 answer
2. asked by Mary
3. 1,378 views
Dale Emerson served as the chief financial officer for Reliant Electric Company, a distributor of electricityserving portions of
1. 3 answers
2. asked by Jaime
3. 1,373 views
it didn't let me put the link to image..A tube of radius 5 cm is connected to tube of radius 1 cm as shown above. Water is
1. 2 answers
2. asked by Chris
3. 1,369 views
mikes average on the first four exams in econ 1A is 88. what must he earn on the next exam to raise his overall average to 90
1. 1 answer
2. asked by chris
3. 1,348 views
if an aqueous solution of BA(NO3)2 is added to 1.0 L of a solution containing 0.05 mol F- and 0.075 mol SO4 2-, which salt will
1. 3 answers
2. asked by Matt
3. 1,277 views
Question 15 Now that you have a list of citations and their accompanying bibliographic information, what question is not
1. 0 answers
2. asked by christopher
3. 1,235 views
A light ray strikes a flat, L = 1.6 cm thick block (depth) of glass of refractive index 1.49 at an angle of 30 with the normal.C
1. 0 answers
2. asked by lauren
3. 1,198 views
make a prediction about the relative boiling point of the nobel gases. give a reason for you answer.
1. 1 answer
2. asked by sam
3. 1,168 views
any tips for ela assessment tomorrow
1. 1 answer
2. asked by bills luver
3. 1,127 views
Which of the following is a strong Acid? HNO3, H3PO4, NH4, CO3(2-), H20
1. 1 answer
2. asked by John
3. 1,124 views
What is the exact value of the cos of 23pi/12?(Twenty-three pi over 12, which is = to 345 degrees.) Thank you, Roger
1. 1 answer
2. asked by Please help.
3. 1,085 views
Look at the pattern of shaded numbers. use place value to describe how the number change.501 is
1. 0 answers
2. asked by dylan
3. 1,075 views
A researcher needs 5.00 mg of 128Ba for an experiment. If the half-life of 128Ba is 2.43 days, how many milligrams of 128BaCl2
1. 4 answers
2. asked by me
3. 1,060 views
What would happen to the color of a dilute solution containing FeCL4 if you added concentrated HCl?
1. 1 answer
2. asked by Christina
3. 1,048 views
A 3.0-kg block is on a frictionless horizontal surface. The block is at rest when, at t = 0, a force (magnitude P = 2.0 N)
1. 0 answers
2. asked by qambar
3. 1,045 views
When using search engines, how do you conduct searches that include two or more items?use and between the terms use but between
1. 1 answer
2. asked by christopher
3. 1,043 views
Is this alright as my 'hooking' beginning?We find it mixed in our food on the shelves in the supermarket, we find it growing in
1. 4 answers
2. asked by mysterychicken
3. 1,019 views
is it true that after replacing several generals grant was the general chosrn by lincoln to take command of the union army in
1. 1 answer
2. asked by kasey
3. 1,007 views
Write a net equation for the reaction between aqueous solutions of HClO4 and NaH2PO4.
1. 1 answer
2. asked by abc
3. 989 views
How many Calories are found in a food sample if burned in a calorimeter is raises the temperature of 1000 grams of water 58
1. 1 answer
2. asked by Anonymous
3. 989 views
A PIZZA 18" D COST $9.00 FIND PRICE PER SQ IN.OF PIZZA
1. 1 answer
2. asked by BRANDON
3. 985 views
Scoring in Golf. A golfer played 8 rounds on a tournamentcourse with the following scores (par is the expected score for a
1. 0 answers
2. asked by Jenna
3. 976 views
Hithese are the posts from earlier---i just had a quetsion about your response: ""Apchemistry - DrBob222, Monday, April 26, 2010
1. 1 answer
2. asked by Kiki
3. 957 views
A horizontal board weighing 227.0 N is supported at points A and B in the figure below. The plank serves as a platform for a
1. 1 answer
2. asked by Michael
3. 926 views
Hey, here are your other answers1) She is wearing a long-sleeved cotton polo shirt with a slogan in the front and one in the
1. 0 answers
2. asked by Anna
3. 921 views
This modifier illustrates the rule that adjectives of two syllables vary. If the word ends in -y, change the y to i and add -er,
1. 1 answer
2. asked by christopher
3. 920 views
A compressed high resolution chest xray image requires about 8MB of data. most GP surgeries are connected to the NHS network at
1. 3 answers
2. asked by Peter
3. 912 views
Mary and Joe would like to save up $10,000 by the end of three years from now to buy new furniture for their home. They
1. 0 answers
2. asked by Unknown
3. 910 views
[Cl-] in PbCl2 solution, M?[Pb2+] in PbCl2 solution, M? ksp? #moles : AgCl(s)= Cl(aq) Pb2+(aq)= Temp of solution =20.2 volume of
1. 2 answers
2. asked by Anthony
3. 904 views
1.When should you begin choosing appropriate sources for your topic?as soon as you get the assignment after the rough draft is
1. 1 answer
2. asked by christopher
3. 891 views
i need to find the;[Cl-] in PbCl2 solution,[Pb2+] in PbCl2 solution, and the ksp given: PbCl2(s)--> Pb2+(aq)+2Cl-(aq) Temp of
1. 0 answers
2. asked by Anthony
3. 875 views
What is the decay constant for a radioactive isotope which decreases to 34% of its original value in 2.48 hours?
1. 2 answers
2. asked by me
3. 872 views
A graph shows distance on the vertical axis and time on the horizontal axis. If the speed is steadily increasing, and becomes a
1. 2 answers
2. asked by Judy
3. 863 views
A solid bar of length L = 1.30 m has a mass m1 = 0.893 kg. The bar is fastened by a pivot at one end to a wall which is at an
1. 1 answer
2. asked by Tessa
3. 857 views
A horizontal board weighing 227.0 N is supported at points A and B. The plank is 3.8 m in length, and points A and B are
1. 0 answers
2. asked by Michael
3. 838 views
What distance would Mario travel if he drove for 4(3/4) hours at 70 miles per hour?
1. 5 answers
2. asked by dee
3. 833 views
Describe the effect of each change on the perimeter and the area of the given figure.A.The Base and height of the triangle are
1. 0 answers
2. asked by Anonymous
3. 826 views
Two converging lenses are placed 31.0 cm apart. The focal length of the lens on the right is 22.0 cm, and the focal length of
1. 0 answers
2. asked by Christopher
3. 823 views
A 100 milliliter sample of 0.100-molar NH4Cl solution was added to 80 milliliters of a 0.200-molar solution of NH3. The value of
1. 1 answer
2. asked by Nicole
3. 818 views
I cannot balance this equation and I am really struggling.Cr2O7^2-(aq)+ Cu^+(s)-->Cr^3+(aq)+Cu^2+(aq) How do I get the charges
1. 1 answer
2. asked by Carl
3. 815 views
what is the molar concentration of an aqueous NaOH solution when 45.0 grams are dissolved in water to make 100mL of solution
1. 1 answer
2. asked by brad
3. 804 views
Question 16Use quotation marks to set off the exact words of someone else in all but which of the following options? Up to three
1. 3 answers
2. asked by christopher
3. 795 views
1. On three consecutive passes, a football team gains 5 yards, loss 18, and gain 50 yards. What number represents the total net
1. 1 answer
2. asked by Jimmy
3. 793 views
classical conditioning indentify the ucs,ucr, cs, cr in the statement example:In washing my car this morning. Which the car
1. 1 answer
2. asked by denise
3. 792 views
12.Which of the following is incorrect?use quotations that illustrate the author’s own viewpoint introduce quotations with
1. 4 answers
2. asked by christopher
3. 785 views
f(x)=8cos4xWhat is the derivative? Im doing online homework and i keep getting an incorrect answer. How do you work out this
1. 1 answer
2. asked by Adam
3. 772 views
I pasted the sequences of human and chimps into Transeq and this is what I got:>exo18_MYH16_human_1
1. 0 answers
2. asked by bre
3. 771 views
In what ways do health care expenses affect an economy? What are the economic advantages to government involvement in health
1. 1 answer
2. asked by JeJe
3. 755 views
Algebra Equation3x-12=-48
1. 2 answers
2. asked by aly
3. 751 views
A solenoid of 200 loops of wire that cover a length of 0.1 m. The solenoid carries a current of 4.0 A. What is the strength of
1. 4 answers
2. asked by Jill
3. 750 views
Write a net equation for the reaction between aqueous solutions of NH4Cl and Na2SO3.
1. 1 answer
2. asked by bill
3. 750 views
The combination of an applied force and a frictional force produces a constant total torque of 38.1 Nm on a wheel rotating about
1. 1 answer
2. asked by Tessa
3. 746 views
The mean of a sample of 25 was calculated as xbar = 500. The sample was randomly drawn from a population whose standard
1. 0 answers
2. asked by Joe
3. 733 views
what is log x=3.2
1. 1 answer
2. asked by tarter
3. 733 views
A capacitor that powers the flash in a camera is charged using 6.0 V battery. after that capacitor is charged, it is discharged
1. 1 answer
2. asked by Neon
3. 733 views
5.00 g of octane are burned in a bomb calorimeter containing 2.00 * 10^2 g of water. how many Calories of energy are released if
1. 8 answers
2. asked by laney
3. 731 views
Write a fully developed paragraph on your favorite season.Out of all the seasons, Spring is by far my favorite. when Spring
1. 0 answers
2. asked by John
3. 721 views
What is the strength of the magnetic field a distance of 1 meter from a wire carrying a current of 1 A?equation: B=MoI ------
1. 1 answer
2. asked by Jill
3. 704 views
The bus driver's manager wants to know the average speed at which the driver was actually driving the bus that day while he was
1. 4 answers
2. asked by Judy
3. 698 views
48. What role has the concept of nationalism played in the life of Russia in the past and present.I'm so confused on this
1. 2 answers
2. asked by y912f
3. 696 views
How do you know if a value is a solution for an inequality? How is this different from determining if a value is a solution to
1. 1 answer
2. asked by Jacqueline
3. 695 views
The bus driver's manager wants to know the average speed at which the driver was actually driving the bus that day while he was
1. 1 answer
2. asked by Judy
3. 692 views

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