ocr: 1988 chemistry quiz #1 page 2 (10 pts.) 5. Campound X Is found to contain by weight 55.62 C, 3.31 H, 9.3t N and 31.82 0. What Is the simplest (empirical) formula of compound X7 (At. wts: N - - 14.01 : C = 12.01 :0 - 16.00 : K * 1.008) C7Hg NO3 (4, 10 pts) 6. A solution aade by dissolving 18.00 9 of Caciz In 72.0 9 of water has a density of 1.180 g/al. Calculate: (At. wts: Ca - 40.08 : CI . 35.45 : H = 1.008 : 0 - 16.00) (a) - Percant by welght Cac'2 In the solution. 20.0% (b) The molarity of the solution 2.17 * (10 pts.) 7. 16.04 9 of methane (CH, is mixed with 96.00 9 of axygen (0,) and the a ...
