104 Answered Questions for the topic Solutions

Solutions

01/31/18

#### Determine the molarity of a solution of concentrated nitric acid.

Determine the molarity of a solution of concentrated nitric acid. Concentrated nitric acid is 70% by mass HNO3. The density of concentrated nitric acid is 1.42 g/ml

Solutions Freezing Point Depression

01/30/18

#### What is the freezing-point depression of a solution that contains 0.705 mol of a nonelectrolyte solute in 5.02 kg of water? (Kf = 1.86 °C/m)

Although I understand Chemistry and have been doing well in the class, I just do not understand this problem. Thank you for any help!

Solutions Trigonometry

12/24/17

#### Why is x^2-x-1 and x^4-5*x^2+5 in x^4+2*x^3-6*x^2-2*x+1?

I was playing around with tan(4*arctan(x))=2 and noticed x^2-x-1 and x^4-5*x^2+5 were in the solutions. It just seemed strange to me. Do identities work on these? Why is it adding/subtracting like...
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Solutions

12/04/17

#### What mass of solute must be added to the solution to correct the concentration

A student prepares a 250 ml of 1.35 M solution of magnesium chloride for an experiment. His lab partner accidentally dilutes the solution with an additional 125 ml of water

Solutions

12/04/17

#### How would temperature affect the vapour pressure of a non polar solvent

Give example and description

Solutions

12/04/17

#### Determine the concentration of dissolved oxygen in the lake in ppm

Dissolved oxygen gas levels in a polluted lake have dipped dangerously low to a concentration of 8.023•10^-4 M

Solutions

12/04/17

#### What volume of concentrated acid and what volume of water would be required to create such a solution

Sulphuric acid is sold in standard stock solutions of concentration 14.5M. A teacher needs to prepare 175 ml of a 2.3M solution of sulphuric acid.

Solutions

11/18/17

#### You need 350 mL of a 50% alcohol solution. On hand, you have a 25% alcohol mixture and a 60% alcohol mixture. How much of each mixture will you need to obtain t

You need 350 mL of a 50% alcohol solution. On hand, you have a 25% alcohol mixture and a 60% alcohol mixture. How much of each mixture will you need to obtain the desired solution?

Solutions Solution Set

11/07/17

#### Use +,-,÷,× with the numbers 2,5,6 to get a total of 14. You can only use the numbers once.

Using the numbers 2,5,6 how can I get a total of 14. You can only use the numbers once.

Solutions Homework Tips

10/06/17

#### explain the reason

Explain ‘chemical equilibrium’ and ‘Le Chatelier’s principle’ ,respectively.Now changes of the reaction conditions A or B are given to the chemical reaction eq.①.Which direction does the chemical...
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#### Chemistry; solutions

An experiment calls for 50 mL of a 0.5 M aqueous solution of sodium hydrogen carbonate. Describe how you would make up such a solution?

07/13/17

#### One, Two, or No Real Solution Problem.

How do I know if this has One, Two, or No Real Solution?
-3x^2 + 5x - 1 = 0

Solutions

05/01/17

#### Calculate the boiling point, in degrees celsius (°C), of a 4.2mole/kg aqueous solution of Al(NO3)3. Assume you are at sea level.

Calculate the boiling point, in degrees celsius (°C), of a 4.2mole/kg aqueous solution of Al(NO3)3. Assume you are at sea level. Round your answer to three significant figures. Include the unit in...
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02/21/17

#### ***7. A lab technician has 40% of a 15% iodine solution. How many gallons of a 40% iodine solution must he add to make 20% iodine solution?

I don't know how to do this please help me

Solutions

02/04/17

#### what is relation between molarity,molality,mass fraction,mole fraction?

It is from the chapter solutions

Solutions

02/02/17

#### The sum of 2 numbers is 65. One number is 4 times bigger than the other number what are the numbers.

The sum of 2 numbers is 65. One number is 4 times bigger than the other number what are the numbers.

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?

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.

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...
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#### 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?

#### 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?

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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