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)?

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

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...

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...

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!

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...

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.

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

Give example and description

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

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?

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

x2+x-12

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...

Y=3x-4 -3y=-9x+12

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?