Calculate how much Borax [Na2B4O7×10H2O (B = 10.8 g/mole; Borax = 381 g/mole)] is required to make 1000 gallons of 1% B solution (wt. basis). How many gal/a do you apply to meet the recommended rate of 1 lb B/a? (8.3 lb H2O/gal).

Question 3 (8 marks) Borax (Na2B4O7·10H2O, MW 381.367) can be used to standardise HNO3. Titration of 0.2347 g borax required 19.25 mL HNO3 solution. What is the molarity of the nitric acid solution? Borax reacts in the following way: B4O72- + 2 H+ + 5H2O → 4B(OH)3

What is the molar concentration of a 4% solution of borax ? (sodium tetraborate decahydrate Na2B4O7 * 10H2O)

How many grams of Al are in the AlCl₃ 6H₂O are required to make 10 gallons of 1.5M solution?