100 Answered Questions for the topic Solutions

07/07/19

How do coordinates represent solutions

How are the coordinates (x,y) used to represent a solution to f(x)=g(x) for different types of functions (radical, rational, quadratic, linear). In other words, how is the ordered pair (x,y) a... more

07/07/19

Coordinates to different functions

How are the coordinates (x,y) used to represent a solution to f(x)=g(x) for different types of functions (radical, rational, quadratic, linear). 

01/24/19

General Chemistry 2 concentration dilution problem

3. A 4.50 *10^-2 M solution is used to prepare a series of five 100.0 mL solutions of varying concentration for use in creating a calibration curve for a spectrophotometric experiment. Determine... more

11/19/18

Determine the volume of stock solution needed and the volume of diluent

Prepare 30 L of formalin from a 100% stock solution. How much formalin is needed to make a 5% solutions? How much Diluent?

10/13/18

Making a Solution

Make 50.0ml of a solution that is both 0.15 M in malonic acid, CH2(CO2H)2 and 0.020 M MnSO4. Tip: Simply Calculate how grams of malonic acid to make 50.0 ml of 0.15 M malonic acid and how many... more

10/02/18

How many solutions does this system have? Why is the solution and explain why?

6x + 4y + 2z = 32 3x - 3y - z = 19 3x + 2y + z = 32  

09/12/18

How to Write a Systems of Equations with Step by Step Solution

Provide a step by step solution and explain what the numbers in your solution mean in the context of the question you chose.     Question:   48,000 fans are in attendance at the Diamondbacks... more

07/21/18

How do you create serial dilutions of a pure compound while maintaining a 0.1% DMSO concentration in each solution?

I need to test various concentrations of a compound however it is only soluble in DMSO. My compound is in pure powder form (I only have 900mg available, and it will be dissolved in 100% DMSO... more

05/29/18

If line s is y= -3x+2 can an equation of a line share more than one solution with line s

If yes, why and where lease provide an exampel

05/01/18

How many grams of NaOH are in 250mL of a 1.25M NaOH solution?

That was my entire question

04/24/18

What is the final volume of the KOH solution?

35.5 mL of a 33% (m/v) KOH solution is diluted with water to give a 7.5% (m/v) KOH solution

04/03/18

You are told to prepare 70% v/v bottle of ethanol to spray down a laminar flow hood.

You are told to prepare 70% v/v bottle of ethanol to spray down a laminar flow hood.The maximum volume on the spray bottle is 250 ml. You have a 95% v/v stock bottle bottle of ethanol. What volume... more

04/03/18

What volume in ml do you need to prepare 100 ml a 10 mM solution of Tris....

What volume in ml do you need to prepare 100 ml a 10 mM solution of Tris (MWT 121 g/mol) from 500 ml of 0.5 M stock?

04/03/18

What amount in gram do you need to prepare 25 ml of a 10% w/v solution of Tris (MWT 121 g/mol)?

What amount in gram do you need to prepare 25 ml of a 10% w/v solution of Tris (MWT 121 g/mol)?

04/03/18

What amount in grams do you need to prepare 100ml of a 10mM solution of Tris (MWT 121 g/mol)?

What amount in grams do you need to prepare 100ml of a 10mM solution of Tris (MWT 121 g/mol)?

03/23/18

4.0 moles of potassium chloride in 0.750 L of solution (water)

 molarity equation : moles/liters   

03/06/18

Do moles change with volume?

Does increasing or decreasing volume change the moles in a solution, or does that just affect the concentration?   If I have 0.035711 moles in 100mL and I'm asked how many moles in 5mL of this... more

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

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!

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... more

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 
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