Asked by Joru
1. a) prepare 1M, 50ml stock solution of Tris HCl
b) from the stock solution, prepare 24mM, 100ml solution
b) from the stock solution, prepare 24mM, 100ml solution
Answers
Answered by
DrBob222
a. How many moles do you want? That's M x L = ?
weigh out grams = mols x molar mass = ? , place in a 50 mL volumetric flask, dissolve, make to the mark on the flask, mix thoroughly and stopper.
b. mL stock x M stock = mLsoln x M soln.
mL stock x 1 = 100 mL x 0.024 M
Solve for mL stock soln, pipet that amount into a 100 mL volumetric flask, etc.
Post your work if you get stuck.
weigh out grams = mols x molar mass = ? , place in a 50 mL volumetric flask, dissolve, make to the mark on the flask, mix thoroughly and stopper.
b. mL stock x M stock = mLsoln x M soln.
mL stock x 1 = 100 mL x 0.024 M
Solve for mL stock soln, pipet that amount into a 100 mL volumetric flask, etc.
Post your work if you get stuck.
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