That was my entire question

That was my entire question

topic: solutions

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

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...

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?

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

molarity equation : moles/liters

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...

Ralph Chase plans to sell a piece of property for $180000. He wants the money to be paid off in two waysminus−a short-term note at 12% interest and a long-term note at 9% interest. Find the amount...

Find the solution of the equation: x^3−3x^2+2x−2=0 Approximate your answer to the nearest hundredth.

Find the solution.

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

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

Could anyone help me with this question? Thanks! Suppose you have a solution that contains 100 μg/mL of a substance in 500 μL. You wish to dilute this so that you have 50 μg/mL in 1...

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

if the original concentration of alminium hydroxide is 7.5•10^-4 mol/L

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...

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

Give example and description

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