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2012
January

Questions Asked on January 16, 2012

Silver chloride, AgCl, would be least soluble inA.1.0M HCl B.1.0M NaNO3 C.1.0M ZnCl2 D.1.0M AgNO3 and why? thx
1. 2 answers
2. asked by saphire
3. 7,721 views
A mixture weighing 7.290 mg contained only cyclohexane, C6H12 (FM 84.159), and oxirane, C2H4O (FM 44.053). When the mixture was
1. 5 answers
2. asked by RJ
3. 6,715 views
The enthalpy of fusion of methanol (CH3OH) is 3.16 KJ/mol. How much heat would be absorbed or released upon freezing 25.6 grams
1. 5 answers
2. asked by Anonymous
3. 5,333 views
Man in the vat problem. Long ago, a workman at a dye factory fell into a vat containing a hot concentrated mixture of sulfuric
1. 1 answer
2. asked by Maxine
3. 4,830 views
4. Find the area of the largest rectangle (with sides parallel to the coordinate axes) that can be inscribed in the region
1. 7 answers
2. asked by Anonymous
3. 4,801 views
A horizontal force with a magnitude of 3.0 newtons applied to a 7.0 kilogram mass moves the mass horizontally a distance of 2.0
1. 3 answers
2. asked by Carlos
3. 4,287 views
A total of 8.0 joules of work is done when a constant horizontal force of 2.0 newtons to the left is used to push a 3.0 kilogram
1. 3 answers
2. asked by Steven
3. 4,272 views
how many kilojoules of heat are absorbed when 1.00 L of water is heated from 18C to 85C? density of water is 1.0 g/ml
1. 7 answers
2. asked by Skye
3. 4,068 views
At the top of a frictionless inclined plane, a .50 kilogram block of ice possesses 6.0 joules of gravitational potential energy
1. 3 answers
2. asked by Gonzalez
3. 3,636 views
A physics student throws a softball straight up into the air. The ball was in the air for a total of 6.16 s before it was caught
1. 2 answers
2. asked by Anonymous
3. 3,465 views
find the cost of 100g rice at 95p per halfkg
1. 16 answers
2. asked by Anonymous
3. 3,391 views
which of the following could dissolve a precipitate of CaC2O4 in a saturated solution of CaC2O4?A.NaOH B.CaC2O4 C.H2C2O4
1. 2 answers
2. asked by saphire
3. 3,327 views
Let f be the function defined by f(x)=xe^(1-x) for all real numbers x.:a. Find each interval on which f is increasing. b. Find
1. 1 answer
2. asked by Anonymous
3. 3,071 views
Solve for x, given that ABCD is an isosceles trapezoid, AC = 2x + 12, and BD = 4x - 30.
1. 1 answer
2. asked by Octaisha
3. 2,776 views
A mixture of three gases has a total pressure of 1380 mm Hg at 25 degrees celsius. If the mixture contained 56 grams CO2, 3.04
1. 9 answers
2. asked by Hannah
3. 2,551 views
1)In the diagram above, line a is parallel to line b. Which theorem or postulate allows you to conclude that angle 6 is equal to
1. 7 answers
2. asked by kay
3. 2,496 views
consider the collection of all rectangles that have lengths 2in. less than twice their widths. find the possible widths(in
1. 1 answer
2. asked by Mary
3. 2,477 views
What weight of sample containing 8.00 % Fe3O4 must be taken to obtain a precipitate of Fe(OH)3 that, when ignited to Fe2O3,
1. 3 answers
2. asked by Sarah
3. 2,356 views
Two small spheres of mass 451 g and 695 g are suspended from the ceiling at the same point by massless strings of equal length
1. 5 answers
2. asked by amanda and leah
3. 2,184 views
An organic pesticide (MW 183.7) is 8.43% Cl. A 0.627-g sample containing the pesticide plus inert material containing no
1. 2 answers
2. asked by Charmaine
3. 1,971 views
An apple is placed 17.0 cm in front of a diverging lens with a focal length of magnitude 23.2 cm. What is the image distance i
1. 2 answers
2. asked by spenceR
3. 1,949 views
A triangle has an area of 20 inches squared. Every dimension of the triangle is multiplied by a scale factor, and the new
1. 4 answers
2. asked by Anonymous
3. 1,850 views
To find the current in a complex circuit, it is necessary to know thepotential difference in each device in the circuit. current
1. 1 answer
2. asked by Anonymous
3. 1,832 views
A block starts at rest and slides down a fric- tionless track. It leaves the track horizontally, flies through the air, and
1. 1 answer
2. asked by Olivia
3. 1,801 views
1. Given the function f defined by f(x) = x^3-x^2-4X+4a. Find the zeros of f b. Write an equation of the line tangent to the
1. 2 answers
2. asked by Anonymous
3. 1,785 views
Q1) A solution of ascorbic acid (C6H8O6, Formula mass = 176 g/mol) is made up by dissolving 80.5 g of ascorbic acid in 210 g of
1. 2 answers
2. asked by lyan
3. 1,678 views
A commercial algaecide containing an organocopper compound was treated with concentrated nitric acid and evaporated to dryness.
1. 2 answers
2. asked by Jill
3. 1,664 views
A 2.446-g sample thought to contain only one volatile substance, MgCO3, was heated in a nitrogen atmosphere for 30 min. After
1. 3 answers
2. asked by Ann
3. 1,622 views
question; in the accompanying diagram of parallelogram abcd,m<a=(2x-10) and m<b=(5x+10)
1. 2 answers
2. asked by crissy
3. 1,580 views
what is the standard form of 2.4*10 to the fourth power
1. 2 answers
2. asked by lila
3. 1,544 views
A simple pendulum is made from a bob of mass 0.04 kg suspended on alight string of length 1.4m. Keeping the string taut, the
1. 3 answers
2. asked by Nuwaya
3. 1,506 views
Q4) Suppose you prepare 950 mL of a solution by dissolving 100 grams of NaCl in 900 mL of water. Assuming the density of pure
1. 1 answer
2. asked by lyan
3. 1,424 views
Q5) The reaction for the combustion of propane is as follows:C3H8 + 5O2 ---->>3CO2 + 4H2O 1. If 20.0 g of C3H8 and 20.0 g of O2
1. 1 answer
2. asked by lyan
3. 1,358 views
A driver in a car traveling at a speed of41.7 mi/h sees a deer 88 m away on the road. Calculate the magnitude of the
1. 1 answer
2. asked by Dustin
3. 1,338 views
How much energy is needed to increase the temperature of 500g of lead from 20 degrees celcius to 45. The specific heat heat
1. 1 answer
2. asked by chester
3. 1,306 views
An 88kg fisherman jumps from a dock into a 131kg rowboat at rest on the west side of the dock. If the velocity of the fisherman
1. 2 answers
2. asked by Bruce
3. 1,285 views
A coin is tossed three times. If heads appears on all 3 tosses, Mary will win $16. If heads appears on 2 of thetosses, she will
1. 1 answer
2. asked by Claudia
3. 1,245 views
Imagine that you are designing a circular curve in a highway that must have a radius of 330 ft and will carry traffic moving at
1. 0 answers
2. asked by TR
3. 1,214 views
What would a careful researcher ask about a Web site called "Facts about pesticides and health" published by the Coalition for a
1. 5 answers
2. asked by tasha
3. 1,209 views
If you have swam one lap in a swimming pool, that means you have swam from one end to the other and back. In 3 h, a swimmer
1. 2 answers
2. asked by lauren
3. 1,200 views
Find the length of the diagonals of the isosceles trapezoid if AC = x + 1 and DB = 2x - 3
1. 1 answer
2. asked by sharon
3. 1,177 views
11. You're writing a paper on exercise and health, so you enter "exercise and health" in a keyword search to find articles in a
1. 1 answer
2. asked by Heather
3. 1,167 views
Imagine that a person is seated in a chair that is suspended by a rope that goes over a pulley. The person holds the other end
1. 1 answer
2. asked by T
3. 1,156 views
Ms Sue, thank you very much again for helping me. I just wanted to know, if possible, if writeacher is well.He has always helped
1. 0 answers
2. asked by Henry2
3. 1,155 views
2cos^2(x) = 13sinx - 5How do i solve for x? I think i have to use the sin^2x + cos^2x = 1, but I'm not sure how to use that. I
1. 2 answers
2. asked by Savannah
3. 1,142 views
Create an analysis chart in Word to compare and contrast the various theories on Domestic Violence.The theories suggested are:
1. 0 answers
2. asked by Sheryl
3. 1,121 views
What happens in the artificial transmutation of an element? Can you give an example?
1. 1 answer
2. asked by Ryan
3. 1,115 views
To find the current in a complex circuit, it is necessary to know thepotential difference in each device in the circuit. current
1. 1 answer
2. asked by Anonymous
3. 1,114 views
Hello Jiskha-hope you can help me here!A straight road to the top of a hill is 2500 feet long and makes an angle of 12 degrees
1. 1 answer
2. asked by lola
3. 1,108 views
What is the net ionic equation for this reaction?2MnO4 (aq) + 5H2C2O4 (aq) + 6H(aq)----->10CO2 (g) + 2Mn(aq) + 8H2O(l)
1. 1 answer
2. asked by Sara
3. 1,098 views
I need to answer an essay question for science and I wanted to make sure of something first. The essay question is- What
1. 1 answer
2. asked by Reed
3. 1,094 views
To the nearest tenth, what's the distance between the points k(7,-10) and M (1,4)
1. 1 answer
2. asked by nikki
3. 1,093 views
PQR is congruent to DJE. complete the statement belowPR is congruent to __, DJ is congruent to __ angle E is congruent to __ 1)
1. 2 answers
2. asked by Elle
3. 1,063 views
Time() 0 2 4 6 8 10 12 14 16Velocity() 0 0 2 5 10 15 20 22 22 By measuring the slope of your curve, find the magnitude of the
1. 4 answers
2. asked by kim
3. 1,058 views
Assume that it takes a college student an average of 5 minutes to find a parking spot in the main parking lot. Assume also that
1. 2 answers
2. asked by latoyia daniels
3. 1,056 views
How do I find the relative maximum and minimum and the zeros of f(x)=-x^3+16x^2-76x+96??
1. 1 answer
2. asked by Brittany
3. 1,055 views
An antacid tablet weighing 3.084 g was dissolved and diluted to 100.0 mL in a volumetric flask. A 25.00-mL aliquot was removed
1. 1 answer
2. asked by Rika
3. 1,033 views
When choosing your search strategy for a search engine, it's best toA. combine keywords into phrases by using quotation marks.
1. 1 answer
2. asked by tasha
3. 1,004 views
Give each letter of the alphabet a money value: A= 1 penny, B= 2 penny,C= 3 penny,and so on.Find words worth 1/5 dollar, 9/10
1. 0 answers
2. asked by katy
3. 965 views
Write the polynomial in simplest form with roots 4, 5i and -5i(multiply it out so no parentheses remain(x-4)(x+5i)(x-5i)(NOT
1. 1 answer
2. asked by Graham
3. 960 views
To avoid plagiarism in your written research paper, you must provide a citation for which of the following?
1. 2 answers
2. asked by tasha
3. 943 views
Ms Sue, I urgently need you to check these sentences I need to hand in for tomorrow and a few words.1) knee-high socks, knee
1. 1 answer
2. asked by Henry2
3. 938 views
A 32 kg child puts a 15 kg box into a 12 kg wagon. The child then pulls horizontally on the wagon with a force of 65 N. if the
1. 3 answers
2. asked by T
3. 927 views
what is an equation of a polynomial function that has zeros at -3 and -2?
1. 1 answer
2. asked by Ryan
3. 915 views
A piston in a car engine has a mass of 0.75 kg and moves with motion wich was approximately simple harmonic. If the amplitude of
1. 1 answer
2. asked by Nuwaya
3. 906 views
bob bender need to buy fertilizer and fencing for his vegetable garden.his square garden measure 10 feet on each side.the
1. 3 answers
2. asked by Anonymous
3. 904 views
A physics student throws a softball straight up into the air. The ball was in the air for a total of 6.16 s before it was caught
1. 1 answer
2. asked by Anonymous
3. 897 views
The Boolean search connector OR is used for which of the following purposes?A. To restrict a search by excluding results that
1. 3 answers
2. asked by tasha
3. 882 views
What is the best definition for The law of universal gravitation ?
1. 1 answer
2. asked by Jim
3. 830 views
an original sample of K-40 has a mass of 25.00 grams. After 3.9x 10 to the ninth years, 3.125 grams of the original sample
1. 1 answer
2. asked by micky
3. 825 views
1. Journals differ from magazines in that they'reA. available by subscription. B. sources of academic research not intended for
1. 4 answers
2. asked by Heather
3. 812 views
A 45 kg cart is moving across a frictionless floor at 1.7 m/s. A 60 kg boy, riding in the cart, jumps off the cart so that he
1. 3 answers
2. asked by Bobby
3. 804 views
Write the first expression in terms of the second if the terminal point determined by the t is in the given quadrant:sin t, cos
1. 1 answer
2. asked by Molly
3. 792 views
Using scissors to cut a rectangular piece of paper from one corner ro the opposite corner. The cut is 36 cm long and makes a 34
1. 2 answers
2. asked by lola
3. 782 views
An astronaut of mass 70 kg carries an empty oxygen tank of mass 14 kg. He throws the tank away from himself with a speed of 3
1. 1 answer
2. asked by Dylan
3. 756 views
At the opening of A Separate Peace, the narrator returns to the Devon Schooltwo years after graduation. to become a teacher at
1. 1 answer
2. asked by Anonymous
3. 735 views
Howard made cards for the fractions 3/9,4/8, 1/7, 6/5,and 3/10. He set them out in a row, putting 1/7 first.The fraction
1. 2 answers
2. asked by Raymond
3. 729 views
A car traveling at 60km/h. It then accelerates at 3.6m/s^2.How long does it take to reach a new speed. How far does it travel
1. 3 answers
2. asked by please help!!!
3. 720 views
Explain why water (H2O) boils at 100 oC whereas H2S boils at -61 oC, even though sulfur has a higher atomic weight than oxygen.
1. 2 answers
2. asked by lyan
3. 717 views
A young boy swings a yo-yo horizontallyabove his head so that the yo-yo has a cen- tripetal acceleration of 240 m/s2. If the
1. 1 answer
2. asked by Anonymous
3. 715 views
Which of the following keyword searches should retrieve the most results in an online database?A. Beta B. Beta OR blockers C.
1. 2 answers
2. asked by Heather
3. 715 views
a local resturant sells muffins in boxes of 6, 9, and 20.determine whether the following amounts of muffins can be purchased.
1. 1 answer
2. asked by rivul
3. 710 views
A simple pendulum is made from a bob of mass 0.04 kg suspended on a light string of length 1.4 m. Keeping the string taut, the
1. 0 answers
2. asked by Abdela said yimer
3. 694 views
If a sample of Co2(CO)8 is found to contain 6*10^-2 mol of C atoms, how many grams of Co atoms are present?Molar Mass (g/mol)
1. 3 answers
2. asked by Kyle
3. 685 views
Find the area and perimeter of a rectangle for which (– 2, 2), (7,2), and (7, – 3) are three of the vertices. What is the
1. 1 answer
2. asked by shirley
3. 683 views
I have a box that is 15cm-wide, 10cm-long, and 3cm- wide. To get it's volume I would add all the sides.Thanks
1. 1 answer
2. asked by Candice
3. 675 views
While John is traveling along an interstatehighway, he notices a 166 mi marker as he passes through town. Later John passes a
1. 2 answers
2. asked by anon
3. 674 views
the order of cation concentration of CuSO4, BaSO4, CaSO4 from highest to lowest.
1. 1 answer
2. asked by saphire
3. 670 views
A .25 g chunk of sodium metal is cautiously dropped into a mixture of 50g of water and 50 g of ice both at 0 C 2Na(s) + 2h2o(l)
1. 0 answers
2. asked by Adriths
3. 670 views
Jack occasionally goes to work by bicycle where he exhales once per 3.00 sec. If in Jack’s every exhale is 4.50% CO2 (by
1. 3 answers
2. asked by Kitty
3. 653 views
What does it mean to evaluate the information that is revealed about a news sources? I am doing a assignment on compare and
1. 5 answers
2. asked by Jazmyne
3. 652 views
Aug 14th, One of our Partner's ( Compuville ) cash book showed a debitbalance of $4,000.00. His bank statement showed a balance
1. 0 answers
2. asked by Christine Carlton
3. 651 views
Where p and q are statements, "p and q" is false if p is false.Always Sometimes Never
1. 1 answer
2. asked by anna
3. 650 views
If the sum of a geometric series is 781, the number of terms is 5, the common ratio is 5 and the last term is 625, what is the
1. 2 answers
2. asked by Embraced
3. 650 views
What weight of sample containing 8.00 % Fe3O4 must be taken to obtain a precipitate of Fe(OH)3 that, when ignited to Fe2O3,
1. 1 answer
2. asked by Yuki
3. 636 views
719 plus 210 write as a numerical or algebraic expression?
1. 6 answers
2. asked by Misty
3. 626 views
In the gravimetric determination of barium as BaCrO4, what weight of sample must be taken so that the weight of the precipitate
1. 2 answers
2. asked by Ariel
3. 622 views
An air-traffic controller observes two aircraft on his radar screen. The first is at altitude 750 m, horizontal distance 19.8
1. 1 answer
2. asked by James
3. 620 views
When a sample of carbon dioxide gas is at 36 degrees and 105 kpa is heated the new pressure of the gas becomes 165kpa. Determine
1. 1 answer
2. asked by jo
3. 618 views
Alpha, beta particles and gamma rays. How does the atomic number and atomic mass number change when a radioisotope decays to
1. 1 answer
2. asked by Ryan
3. 617 views

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