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Questions Asked on April 21, 2013

A solution contains 0.022 M Ag and 0.033 M Pb2 . If you add Cl–, AgCl and PbCl2 will begin to precipitate. What is the
1. 2 answers
2. asked by Sally
3. 7,882 views
A .275 kg. object is swung in a vertical circular path on a string .850 m. long. A) What are the forces acting on the ball at
1. 4 answers
2. asked by Annette
3. 7,712 views
A different scaffold that weighs 400 N supports two painters, one 500 N and the other 400 N. The reading in the left scale is
1. 4 answers
2. asked by Cassie
3. 5,687 views
The amount of rainfall in January in a certain city is normally distributed with a mean of 4.2 inches and a standard deviation
1. 2 answers
2. asked by Sennie
3. 4,796 views
Sophia exerts a steady 40-N horizontal force on a 8-kg box resting on a lab bench. The box slides against a horizontal friction
1. 3 answers
2. asked by Cassie
3. 4,521 views
A University of Rochester student decided to depart from Earth after his graduation to find work on Mars. Before building a
1. 1 answer
2. asked by Emily
3. 4,052 views
Write an equation that represents how dihydrogen phosphate ion (H2PO4-) behaves as an Arrhenius acid. ( Be sure to include the
1. 2 answers
2. asked by Michelle
3. 3,258 views
Consider the function f(x)=xe^2x. Find the intervals on which f(x) is concave up and the intervals where it is concave down.
1. 1 answer
2. asked by anonymous
3. 3,028 views
A pot of water is boiling under one atmosphere of pressure. Assume that heat enters the pot only through its bottom, which is
1. 2 answers
2. asked by <3
3. 2,980 views
Kevin has 18 unit cubes. How many different rectangular prisms can be built using all the cubes
1. 9 answers
2. asked by Rebecca
3. 2,803 views
A horticulturist wishes to estimate the mean growth of seedlings in a large timber plot last year. A random sample of n = 100
1. 3 answers
2. asked by Ann
3. 2,583 views
A cell phone company offers two different plans.Plan A: Monthly fee of $28 30 free minutes $0.45 per additional minute Plan B:
1. 3 answers
2. asked by Simitha
3. 2,539 views
what is the value of the rational expression below when x is equal to three?17+x/x+2
1. 2 answers
2. asked by asia
3. 2,428 views
Write an equation showing that calcium hydroxide acts as an Arrhenius base in water.**(I'm not sure where to start or how to go
1. 1 answer
2. asked by Michelle
3. 2,209 views
Sarah was cutting fabric for a quilt. She cut a strip of fabric that was 19 1/8 inches long into 5 equal pieces. When she was
1. 4 answers
2. asked by aly
3. 2,150 views
A plane has a speed of 250mph and flies with a bearing of N35degE. The wind is blowing from the west at 25 mph with a heading of
1. 2 answers
2. asked by Nancy
3. 2,079 views
A pole is braced by two wires that extended from the top of the pole to the ground. The lengths of the wires are 16 feet and 18
1. 1 answer
2. asked by Anonymous
3. 1,934 views
Composite figure finding area.Is this right my answer I came out with is 323.5 cm? Rectangle: A=22cm x 17cm = 374 (Long side is
1. 9 answers
2. asked by Cole
3. 1,835 views
Show that the acceleration of a hamster is 5 m/s2 when it increases its velocity from rest to 10 m/s in 2 s.
1. 1 answer
2. asked by Cassie
3. 1,777 views
A 85 kg pole-vaulter falls from rest from a height of 6.4 m onto a foam-rubber pad. The pole-vaulter comes to rest 0.48 s after
1. 1 answer
2. asked by Kat
3. 1,680 views
A car rounds a banked curve where the radius of curvature of the road is R=100m., the banking angle 10 degrees and the
1. 2 answers
2. asked by Annette
3. 1,507 views
What [PB2+] should be maintained in Pb(NO3) to produce solubility of 1.0*10^-4 mol PbI2/L when PbI2 (s) is added? Ksp for PbI2
1. 1 answer
2. asked by Joe
3. 1,444 views
4, Assign oxidation states for the two elements in the compound OF2. Explain the rules that you use.5. For each of the following
1. 1 answer
2. asked by Juan
3. 1,385 views
To select a _________ sample, the population is divided into disjoint subgroups according to some characteristics like income
1. 1 answer
2. asked by tammy
3. 1,383 views
Which of the the following was true about the African Americans who moved to California during the mid-1800s?A) They were
1. 2 answers
2. asked by bubbie
3. 1,379 views
AB has a length of 5 cm the line segment is dilated to produce A'B' which has a length of 2 cm what is the scale factor of the
1. 2 answers
2. asked by Dannelle
3. 1,346 views
Please, I need help with this problem. I would really appreciate it.The top of Mt. Everest is 8850 m above sea level. Assume
1. 3 answers
2. asked by Kathy
3. 1,293 views
A canoe of mass 38 kg lies at rest in still water. A man and a woman are at opposite ends of the canoe 4.0 m apart and
1. 0 answers
2. asked by Anonymous
3. 1,104 views
Given the equation C2H4(g)+3O2(g)>2CO2(g)+2H2O(l)+1411kJ, how much heat is released when 8.00g of O2 react?
1. 1 answer
2. asked by Haily
3. 1,058 views
Show that the average speed of a rabbit that runs a distance of 30 m in a time of 2 s is 15 m/s.
1. 1 answer
2. asked by Cassie
3. 1,040 views
A canoe of mass 38 kg lies at rest in still water. A man and a woman are at opposite ends of the canoe 4.0 m apart and
1. 1 answer
2. asked by Anonymous
3. 1,029 views
Find the entropy change of the universe when 2 moles of water freezes at -10 degrees celsius. The delta G for the freezing of
1. 0 answers
2. asked by Linda
3. 1,006 views
You work with the following system:2X(g) <---> Y(g) At, equilibrium, [Y]=3[X]. If K=10, calculate the [Y] at equilibrium.
1. 1 answer
2. asked by scilover
3. 1,000 views
Two tracking stations are on the equator 135 miles apart. A weather balloon is located on a bearing of N 37 degrees E from the
1. 1 answer
2. asked by Taylor
3. 968 views
Name two community organizations that are involved in supporting or giving redress to these factors.explain how these community
1. 1 answer
2. asked by Mthokozisi
3. 929 views
A kite is in the shape of a quadrilateral with two pair of congruent adjacent sides. The lengths of two sides are 20.0 inches
1. 0 answers
2. asked by Anonymous
3. 883 views
Identify one environmental or human factor that causes ill health or accidents or disasters within your community or any other
1. 1 answer
2. asked by Lungelo
3. 862 views
5.6 x 10-6 mol of A and 5 x 10-5 mol of B are mixed in a 200 mL flask. The system is represented by the equation:2A(G) + B(G)
1. 1 answer
2. asked by scilover
3. 862 views
A chemical system within a sealed 1 L reaction vessel is described by the following reversible reaction equation:2H2S(g)
1. 2 answers
2. asked by scilover
3. 855 views
The elevation of the surface of the Dead Sea is -424.3 meters. In 2005, the height of Mt. Everest was 8,844.33 meters. How much
1. 1 answer
2. asked by aly
3. 852 views
Paula moves to an area with a different telephone exchange. Telephone numbers in the new exchange start with 753, and all
1. 1 answer
2. asked by Maame
3. 841 views
A production process produces an item. In a recent study, the company found that 20% of all items produced were defective. Each
1. 1 answer
2. asked by Richard
3. 835 views
A 2.5 g sample of NaOH (Mw = 40.00) was dissolved in water to give asolution of final volume 250 cm3. (i) With reasons, state
1. 0 answers
2. asked by LUx
3. 815 views
Given that on average, an atom of gold weighs 3.27×10^−22grams, how muchdoes an Avagadro’s number of gold atoms weigh (take
1. 1 answer
2. asked by Katie
3. 787 views
Find the exact area below the curve y=x^3(4-x)and above the x-axis
1. 1 answer
2. asked by Mike
3. 787 views
there will be a coin toss to determine the winner of the $5 million prize. You are offered $100,000 for your ticket right now.
1. 1 answer
2. asked by m
3. 775 views
A foam plastic ( sg = 0.58 ) is to be used as a life preserver. What volume of plastic must be used if it is to keep 20 % (by
1. 1 answer
2. asked by ynna
3. 774 views
Some of the underlined pronouns in the following sentences are incorrect. On your paper, revise each sentence that contains an
1. 4 answers
2. asked by Anonymous
3. 741 views
Please help!:( What mass of copper would be produced by the reduction of copper(II) ions during pas- sage of 1 ampere of current
1. 2 answers
2. asked by Steven Gomez
3. 738 views
A closed box is filled with dry ice at a temperature of -81.5 C, while the outside temperature is 27.4 C. The box is cubical,
1. 0 answers
2. asked by <3
3. 715 views
Write the product for the reaction when dichlorine oxide (Cl_2O) reacts with water (the product will have only one equivalent of
1. 2 answers
2. asked by Michelle
3. 709 views
A 5.00-meter steel beam of uniform cross section and composition weighs 100 N. What is the minimum force required to lift one
1. 0 answers
2. asked by Anonymous
3. 702 views
Solubility of Silver(I) Carbonate is 3.2x10^-2 g/100mL What is the Ksp?I'm getting 2.19x10^-12 But it's not in the answer sheet
1. 1 answer
2. asked by Viv
3. 685 views
a boat leaves a dock at 2:00pm ,heading west at 15 km/h. another boat heads south at 12km/hand reaches the same dock at 3:00 pm,
1. 0 answers
2. asked by khan
3. 673 views
Assume you dissolve 0.235 g of the weak acid benzoic acid, C6H5CO2H, in enough water to make 4.00*10^2 mL of solution and then
1. 0 answers
2. asked by john
3. 647 views
Find the entropy change of the universe when 2 mol of water freezes at -10 degrees celsius.
1. 0 answers
2. asked by Linda
3. 644 views
the question is:"The absolute magnitude of a star is -12.. How would you describe its brightness?"
1. 1 answer
2. asked by Ke
3. 638 views
Assign oxidation states to all atoms in each of the following. explain the order in which you determine the oxidation states for
1. 0 answers
2. asked by Juan
3. 637 views
When making comparison of sequences where some are whole genome sequences while others are partial genome sequences, or a
1. 0 answers
2. asked by Cristian
3. 618 views
Use the sum-to-product formula to simplify the expression:If sin 52 + sin 8 = sin A, 0<A<90, then A =??? degrees.
1. 1 answer
2. asked by dylan
3. 616 views
Wings Inc., a software development firm, has stock outstanding as follows: 25,000 shares of cumulative 1%, preferred stock of
1. 0 answers
2. asked by Stacey
3. 614 views
A chemical substance that causes dyes to set is called?
1. 1 answer
2. asked by brianna
3. 610 views
The velocity of sound in the atmosphere is c=300 m/s. An airplane is traveling with velocity v=600 m/s at an altitude of h=8 km
1. 1 answer
2. asked by help
3. 604 views
How many hours does it take for the hour hand to travel as far as the minute hand travels in 40 minutes?
1. 1 answer
2. asked by Liz Marie
3. 600 views
The left end of a 1-kg, 1.0 m long uniform thin rod is attached to a pivot, about which it can rotate freely. A force F is
1. 1 answer
2. asked by gina
3. 598 views
A convex lens of focal length 2.5 cm is placed 4 cm from a small object of height 4 cm. Use a ruler and construct the image. Is
1. 1 answer
2. asked by Emily
3. 596 views
For the function defined by f(x)=3x^2+5x+2, find the following values.(a) f(-4)= (b) f(-x)= (c) -f(x)= (d) f(x+h)=
1. 1 answer
2. asked by Karlee
3. 590 views
Complete each sentence below, using an objective pronoun. Then, tell how each pronoun is used in the sentence.1). Skipping rope
1. 1 answer
2. asked by Anonymous
3. 583 views
Use logarithmic differentiation to find the following derivative:y=(x+6)^4/(x-5)^6. Please show all step so I can understand for
1. 1 answer
2. asked by anonymous
3. 582 views
x^2+16xy+y^2-8=0 Write the appropriate rotation formulas so that in a rotated system the equation has no x'y'-term
1. 0 answers
2. asked by Fabiola
3. 577 views
At the end of the play, Mrs. Popov and Smirnov appear to be in love. Considering what has happened in the play, why is this
1. 1 answer
2. asked by Linnie
3. 572 views
As a promotion, a store draws the name of a customers each week. The prize is a coupon for the store. If winner is not present
1. 1 answer
2. asked by Dylan
3. 571 views
Are the ions of a metal very different from the atoms of a metal?
1. 1 answer
2. asked by M.
3. 566 views
Consider the function f(x) = x - lnx. Find the intervals on which f(x) is increasing and the intervals where it is decreasing.
1. 1 answer
2. asked by Rene
3. 564 views
Use logarithmic differentiation to find derivative of y=x^x^2 x > 0. Please show all steps so I can follow the steps. Thank
1. 1 answer
2. asked by Sean
3. 564 views
Sophia exerts a steady 40-N horizontal force on a 8-kg box resting on a lab bench. The box slides against a horizontal friction
1. 1 answer
2. asked by Cassie
3. 561 views
in 10-15 lines critically discuss 5 ways in which teenage pregnancy problem imparts on the community. provide relevant source to
1. 1 answer
2. asked by Busi
3. 559 views
Can anyone help me explain this problem?Your help is appreciate it. You are given an apple and an orange. The apple has a net
1. 2 answers
2. asked by Kathy
3. 556 views
Three students, Chris, Vlad, and Steve, are registered for the same class and attendindependently of each other. If Chris is in
1. 1 answer
2. asked by Lindsay
3. 551 views
A concentration cell consists of the same re- dox couples at the anode and the cathode, with different concentrations of the
1. 0 answers
2. asked by David
3. 550 views
A concentration cell consists of the same re- dox couples at the anode and the cathode, with different concentrations of the
1. 0 answers
2. asked by Steven Gomez
3. 549 views
Joe pushes a lawn mower four times as far as Mary while exerting only half the force, who does more work? And by how much?
1. 1 answer
2. asked by Tara
3. 542 views
A solid disk of radius 6.50cm and mass 1.65kg , which is rolling at a speed of 2.60m/s , begins rolling without slipping up a
1. 1 answer
2. asked by Lauren
3. 538 views
what are the institutions/community organization that are involved in supporting or giving redress to these disasters? And how
1. 2 answers
2. asked by edgar
3. 536 views
A concentration cell consists of the same re- dox couples at the anode and the cathode, with different concentrations of the
1. 0 answers
2. asked by David
3. 525 views
I Need Help to Start my Thematic Essay, Theme is change- Throughout united states history individuals other than presidents have
1. 3 answers
2. asked by Lupe
3. 517 views
i have been asked to correct the sentence would you please assist : 1.when will you eat are you not hungry
1. 5 answers
2. asked by R S Telagathoty
3. 517 views
What are the institutions/community organizations tha are involved in supporting or giving redress to these disasters of hiv and
1. 1 answer
2. asked by Anonymous
3. 516 views
a football team gained 12 yards on one play, lost 40 yards on another and gained 34 yards on the last play of the first half.
1. 2 answers
2. asked by amanda
3. 516 views
Use logarithmic differentiation to find the following derivativey=(x+6)^4/(x-5)^6. Please show all steps so I can follow for
1. 2 answers
2. asked by Sean
3. 514 views
When will an object float on a fluid's surface?My answer: An object will float on a fluid's surface if only the object is less
1. 1 answer
2. asked by Anonymous
3. 513 views
I have to analyze how sub-Saharan Africa & south & south-east Asia's relationship to global trade patterns changed from 1850 to
1. 1 answer
2. asked by Kaitlyn
3. 505 views
What is the distance on the ground between 2 posts when the posts are attached to a platform that is 6 feet square and attached
1. 1 answer
2. asked by Gina
3. 500 views
identify and describe 3 environmental health hazards that cause ill health,accidents,crises and disasters within South Africa
1. 2 answers
2. asked by tshiamo
3. 496 views
what is the longest river in the world?
1. 1 answer
2. asked by Jeconiah
3. 494 views
What part of speech is the word run in the following sentence? I have a run in my hose.
1. 1 answer
2. asked by kara
3. 493 views
Jack is making square pillows for his room. He is using different fabric for each face, one width a width of 80 inches and the
1. 0 answers
2. asked by Aeriel
3. 492 views
Is leisure time considered an inferior good when the substitution effect dominates?I think that the answer is yes because if you
1. 0 answers
2. asked by Hannah
3. 485 views
Why did pilgrims travel?a. to fight a holy war b. to organize followers c.to pay tribute to a king d. to visit holy places
1. 2 answers
2. asked by becca
3. 485 views
What are the shifts in meaning of the word "Conquest"?
1. 5 answers
2. asked by Thomas
3. 482 views

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