Part A) What is the mass in grams of 1.59 moles of aluminum oxide?
(a) 64.1 g (b) 162 g (c) 0.0156 g (c) 42.9 g
Part B) Commercial grade fuming nitric acid contains 90% HNO3 by mass with its density of 1.50 g/mL Its molarity is:
(a) 0.214 M (b) 21.4 M (c) 2.14 M (d) 0.428 M
Part C) What is the concentration in ppm of a 3.7 L solution (d = 1.00 g/mL) containing 4.21x10-4g of the pesticide DDT?
(a) 0.114 ppm (b) 114 ppm (c) 11.4 ppm (d) 1.14 ppm
Part D) 2.50 g of an unknown base is dissolved in 289 mL of water and the molar concentration of the resulting solution was determined by titration to be 0.216 M. What is the identity of the unknown base out of the following list?
(a) Ca(OH)2 (b) NaOH (c) KOH (d) LiOH
(e) None of the above
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