111 Answered Questions for the topic Solutions

Solutions

12/13/16

A chemist needs 4 liters of a 12% acid solution. He has a 10% solution and a 20% solution available to form the mixture. How much of each should be used to form
A chemist needs 4 liters of a 12% acid solution. He has a 10% solution and a 20% solution available to form the mixture. How much of each should be used to form the 12% solution?
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Solutions

11/04/16

How much 15% solution and how much 40% solution should be mixed to get 200 gallons of 30% solution?
How much solution do I need to get 30% of solution of 200 gallons.
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10/19/16

Solutions...?
What would you expect to see in a beaker containing a solution of the weak electrolyte acetic acid (CH3COOH), and in a separate beaker containing a solution of the strong electrolyte Potassium... more
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10/04/16

How much of an alloy that is 30% copper should be mixed with 300 ounces of an alloy that is 70% copper in order to get an alloy that is 50% ?copper?
How much of an alloy that is 30% copper should be mixed with 300 ounces of an alloy that is 70% copper in order to get an alloy that is 50% ?copper?
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10/04/16

How many liter of each solution must be mixed?
A chemist has two solutions of HNO3. One has a? 40% concentration and the other has a? 25% concentration.How many liters of each solution must be mixed to obtain 84 liters of a 35?% ?solution?
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10/02/16

How many ounces of a 35% alcohol solution must be mixed with 12 ounces of a 40 % alcohol solution to make a 39 % alcohol? solution?
How many ounces of a 35% alcohol solution must be mixed with 12 ounces of a 40 % alcohol solution to make a 39 % alcohol? solution?
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Solutions Satisfying

09/29/16

the real number x satisfying
2x-2x-2=192
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08/14/16

Completely dry raisins do not absorb water from a solution because.......
Completely dry raisins do not absorb water from a solution because.......
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Solutions Ordered Pair

07/28/16

find the ordered-pair solution of y=3x-9 corresponding to x=4
please help me I cant figure out this answer I have tried to summit my answer 5 times and its incorrect
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05/20/16

250g of water were added to 150g of 30% salt solution. What is the new concentration of the mixture?
250g of water were added to 150g of 30% salt solution. What is the new concentration of the mixture?          PLEASE HELP :D
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Solutions

04/19/16

Find the solutions to this equation 2x2+9x+4=0
 2x2  +9x+4=0 find the solutions
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02/17/16

Among all rectangles that have a perimeter of 144. find the demensions of the one whose area is largest
I don't know how to set this up and I am needing help. My professor did not tell me how to do this nor does my book
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02/09/16

Stain remover solution word problem
katy runs a dry cleaning business and needs 6% phosphoric acid solution to remove a stain from a suit. Katy has on hand 14% phosphoric acid solution and a 2% phosphoric acid solution. How many... more
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01/27/16

Calculate the vapor pressure of a solution? CHEMISTRY - Please check my answers??!!
Calculate the vapor pressure of water above a solution made by adding 15.0 g of lactose (C12H22O11) to 100.0 g of water at 338 K. (vapor pressure of pure water at 338 K is 187.5 torr) P (vapor... more
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01/27/16

Calculate the vapor pressure of water above a solution. Please check my work??? General Chemistry
Calculate the vapor pressure of water above a solution made by adding 15.0 g of lactose (C12H22O11) to 100.0 g of water at 338 K. (vapor pressure of pure water at 338 K is 187.5 torr)   P (vapor... more
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01/27/16

Determine how many moles of particles are present in 1.0 L of the following solution? Please check my answer? Chemistry
0.02 M CuSO4   Can you check my work? Since CuSO4 is a m + nm, it is an ionic compound and will break up into ions in a polar? solution.   (0.02 mol CuSO4 / 1.0 L soln)(2 ions/1 mol CuSO4) =... more
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01/27/16

CHEM HELP PLEASE? Solution problem involving mass percent? What is the mass % of ammonium chloride in the solution?
At 20°C, a 3.54 M aqueous solution of ammonium chloride has a density of 1.0512 g/mL. The formula weight of NH4Cl is 53.50 g/mol.options:6.953.360.2974.1018.00I know mass % = mass of solute/mass of... more
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12/16/15

solve this system of equations
x+3y=-5 9x+30y=-48
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11/30/15

Solve the equation...
Solve sin(2θ) = cos(θ) for 0 ≤ θ < 2π (Hint: there will be a total of 4 solutions!)
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11/29/15

The antibiotic in dry form is contained in 10ml vial. The label written is 1g = 1ml; 2g = 5,000,000 units. There is 8g of antibiotic in the bottle. how many mg?
how many mg are there in one dose?
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Solutions Interval Cosine Sine

11/22/15

2sin(pi/3x) =sqrt2
Find all solutions on the interval 0< (or equal to) theta < 2pi   Help! Show steps please. thanks
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11/22/15

cos^3(t) = -cos (t)
Find all solutions on the interval [0,2pi)  Please help and show steps!!   Thank you! 
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11/22/15

2cos (3t) = -1
Help!! Find all solutions. Please show steps.   Thank you!
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Solutions Algebra Equation

10/28/15

application problem
You have two solutions one contains 40% acid, the other 10% acid. You require 10 gallons of a 20% solution. How much of the 10% should you use? I have to write an equation and solve.
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10/26/15

application problem
one solution contains 40% alcohol. A second contains 60%. You need 20 L of 45% solution. How many L of the 40% should be used. I have to write an equation and solve
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