How would you prepare10 ml of 25 micromolar solutions of vitamin B molecular weight of 265.35 g/mol? Also, show step-by-step how the mass you weighed out and how it would appear on the analytical balance?
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How would you prepare10 ml of 25 micromolar solutions of vitamin B molecular weight of 265.35...
Dehydration of Tert-butyl Alcohol tert-butyl alcohol- molecular weight- 74.12 density- 0.775 g/mL sulfuric acid- molecular weight- 98.08 density- 1.840 g/mL actually measured out 15.2mL of tert-butyl alcohol, actually measured out 32.1mL of 9M sulfuric acid after condensing solution was put into 50ml beaker originally weighing 34.99g and with solution weighed at 37.57g I need help finding mols needed for both, mass/volume needed for both, mass/volume USED for both, mols USED for both, percent yeild mass and percent yeild mols...
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You want to measure the molecular weight of a protein molecule so you measure the osmotic pressure of a protein solution you make. If 0,10 g of protein is dissolved in 5.0 ml. of solution, n = 0.05 atm at 25°C. What is the molecular weight of the protein? 820 g/mol Anamn
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A student needs to prepare 100.0 mL of vitamin C solution according to the directions in Part 1 of the experiment. S/he weighs out 0.0471 g vitamin C (molar mass = 176.124 g/mol) and dissolves it in water to give 100.0 ml solution. S/he pipets 10.00 mL of the solution into a beaker and adds 20 mL of water and 10 mL of buffer. (a) How many mg of vitamin C are in the beaker? 4.9 4.71 mg (b) Suppose...
If given the molecular weight of glucose (180 g/L) how would you convert glucose in mg/dl to mM or mol/L? Need general answer on how to do calculations not needed for specific number.
NaCl has a molecular mass of 58 g/mol. Would it go through a 50 molecular weight cut off filter? Why or why not?
Calculate how to prepare 200 mL of a 0.1 M sodium phosphate buffer at pH 6.8 by combining two separate solutions of 0.1 M NaH2PO4.2H2O and Na2HPO4)? Molecular weight NaH2PO4.2H2O = 156 g/mol; molecular weight Na2HPO4: 141.96 g/mol. Use 6.86 as the pKa and prepare 250 mL of the separate solutions.