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QUESTION 5 How many grams of Tricine (MW = 179) would you need to make 300...
QUESTION 5 8 MARKS a) How many grams of BaCl2.2H2O (MW = 244.27 g/mol) you need to prepare 250 mL of 0.15 M chloride ion solution? 2 marks b) It was established that this reagent was contaminated by CaCl2 (MW = 181.82 g). The content of calcium in the solid sample was found to be 4750 ppm (w/w). What was the percentage decrease in the molar Barium ion concentration caused by this contamination? 6 marks hi chemists I recieved this...
1. You need to make an aqueous solution of 0.138 M magnesium bromide for an experiment in lab, using a 125 mL volumetric flask. How much solid magnesium bromide should you add? 2. How many milliliters of an aqueous solution of 0.163 M aluminum nitrate is needed to obtain 13.4 grams of the salt? 3. n the laboratory you dissolve 19.8 g of calcium chloride in a volumetric flask and add water to a total volume of 250 . mL....
How many grams of NaOH do you need to make a IM solution? How many grams of NaOH do you need to make a 3M solution? How many grams of C,H, Nao, do you need to make a IM sodium acetate buffer? How many grams are needed to make 50 mL of 25% HCI? How much water is needed if you are making 800 mL of 20% sodium hypochlorite (bleach) for cleaning a vessel?
How many grams of NaCl (MW 58.44) should you use to make a 500 ml of a 0.64 M solution?
1) You need to make an aqueous solution of 0.125 M silver nitrate for an experiment in lab, using a 250 mL volumetric flask. How much solid silver nitrate should you add? ____ grams 2)How many milliliters of an aqueous solution of 0.160 M aluminum chloride is needed to obtain 6.50 grams of the salt? __ mL
how many grams of sodium chloride would need to be dissolved to make 750 mL of a 1.7 M solution?
How many grams of CaCl2 are needed to make 853.6 g of a solution that is 31.0% (m/m) calcium chloride in water? Note that mass is not technically the same thing as weight, but (m/m) has the same meaning as (w/w). How many grams of water are needed to make this solution? What is the volume percent % (v/v) of an alcohol solution made by dissolving 109 mL of isopropyl alcohol in 741 mL of water? (Assume that volume are...
How many grams of CaCl2 are needed to make 610.3 g of a solution that is 36.5% (mm) calcium chloride in water? Note that mass is not technically the same thing as weight, but (m/m) has the same meaning as (w/w). Number g Cac How many grams of water are needed to make this solution? Number b) What is the volume percent % v/ alcohol in 739 mL of water? (Assume that volumes are additive.) of an alcohol solution made...
completely with units and show your work for full credit. Complete on this sheet or on a separate piece of paper, but do not complete in your lab notehook For each question, clearly indicate the name and the amount of EACH solute AND the amount of solvent (using proper units gms or mls, unless otherwise indicated) that you would use to prepare the solution. Assume water is the solvent if not indicated. 2 pts will be earned for showing your...
How many grams of magnesium cyanide are needed to... make a 275 mL of a 0.075 M solution? add to 275 mL of water to make a 0.075 molal solution? Please show work and explain