September 18, 207 Section R02 1: 35, 41, 61, 62, 84 35. Write the chemical formula for calcium nitrate, potassium chloride and barium phosphate. What are the names and charges of all the ions in these three compounds? Calcium nitrate > Ca(NO 3 ) – Ca+, NO 3 -Potassium Chloride > KCl – K+, Cl-Barium phosphate > Ba 3 (PO 4 ) 2 - Ba 2+ , PO 4 3− 41. Which of these compounds would you expect to be ionic? Explain your answers. I would expect (b)HCl to be ionic because it is composed of two ions- H+ and Cl-. Just like potassium chloride, hydrogen chloride is also an ionic compound and reflects similar properties. 61. How many moles are present in 0.250 g of each of these compounds? A. C 7 H 5 NO 3 S, saccharin, an artificial sweetener 0.250 g C 7 H 5 NO 3 S = 183.9 g/mol C 7 H 5 NO 3 S X= 0.00136 mol X 1 mole
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