CHEM 110 Midterm: 110_Fall_2018_Exam_I_Whelan
Document Summary
1. 00x103: there are 12 eggs in a dozen. What is the volume of the sample in units of liters. No need to do the calculation just set up the correct dimensional analysis conversions you may not need to fill in all the boxes. A 0. 0635 l sample of a liquid has a mass of 87. 6 g. identify it as either nonane (density = 0. 719 g/ml) or iodoheptane (density = 1. 38 g/ml). The element copper has two stable isotopes, copper-63 with an atomic mass of 62. 93 amu and copper-65 with an atomic mass of 64. 93 amu. From the atomic weight of cu = 63. 54 one can conclude that: Copper-65 has the highest percent natural abundance. Both isotopes have the same percent natural abundance. Most copper atoms have an atomic mass of 63. 54. Copper-63 has the highest percent natural abundance. A certain element consists of two stable isotopes.
