
11)How do you prepare 30mm 10ml H2SO4 solution from 96%(w/w) and 1.84 g/ml stock H2SO4 solution? (H2SO4=98,08 g/mol)
1- a- How do you prepare 600 mL 4 N H2SO4 solution using 50% Sulfuric acid stock solution (d: 1.403 g/mL MW:98g/mole)? b- If you took 10 mL from this sulfuric acid solution (4N) and diluted to 1000 mL, what would be the % (w/v) and ppm concentration of the final solution.
You wish to prepare 100.0 mL of a 325.0 ppm w/v sodium (MW = 22.9897 g/mol) solution. How many grams of sodium dichromate dihydrate (Na2Cr2O7·2H2O, MW = 297.998 g/mol) are needed to prepare this solution? Assume the final solution has a density of 1.00 g/mL.
You wish to prepare 250.0250.0 mL of a 225.0225.0 ppm w/v Fe2+Fe2+ (MW=55.845 g/molMW=55.845 g/mol) solution. How many grams of ferrous ammonium sulfate hexahydrate (Fe(NH4)2(SO4)2⋅6H2O(Fe(NH4)2(SO4)2⋅6H2O, MW=392.14 g/molMW=392.14 g/mol) are needed to prepare this solution? Assume the final solution has a density of 1.00 g/mL.
10)You need to prepare 250 ml 20mM NaH2PO4 solution. By using NaH2PO4.4H2O, how do you prepare this solution? (NaH2PO4 120g/mol, NaH2PO4.4H2O=192g/mol) wwwwwww w w ww ww ww.ww www wwwww w ww www ww. w ww wwwa
How to calculate: Prepare 10mL of 5% (w/v) K2CrO4 indicator solution
How do you prepare 500 ml of 30% v/v ethanol? How do you prepare 225 ml of 25% w/v NaCl? You have a 20 ml of a 10% w/v solution of ammonium sulfate. How many grams of ammonium sulfate are in this solution? You want to run a cesium chloride gradient to purify a sample of DNA in an ultracentrifuge. You wish to fill a 15 ml test tube with five equal layers of 5%, 10%, 15%, 20%, and 25%...
Making Solutions Practice Problems: I. How would you prepare 100 ml of a 30% (w/v) solution of polyethylene glycol (PEG)? 2. How would you prepare 50 ml of a 9 % (w /v ) solution of NaCI? 3. How would you prepare 200 ml of 70 % ( v /v ) solution of ethanol from a stock of 95% ethanol? How would you prepare 200 ml of 0.3 M NaCl? (NaCl MW 58.44) 4. 5. How are 50 ml of...
You are required to prepare a H2SO4 (aq) solution. You dissolve 16.5 g H2SO4 in order to prepare the 150. mL aqueous solution. Find the molarity of the solution. Identify what the solvent is.
How would you prepare a 2.5m solution of HNO3 from 10mL of 14m HNO3 ?
You have a protein solution of 200uM. You need to prepare 10ml of a 200nM solution of the protein. How much of the stock and how much water should you use? stock = water =