CHM 1311 Midterm: KEY-2015-Midterm1A(1)
4 Nov 2015
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#1. (10 points) short answer questions: the energy change shown in the diagram at right corresponds to a(n): __calcium sulphate heptahydrate_______: starting with an atom of copper-63, we remove three protons, add one neutron, and remove 6 electrons from the atom. Fill in the blanks for our new species: Number of protons number of neutrons number of electrons chemical symbol. 26: four balloons are filled to the same volume with the following gases and a small hole is made in each balloon. Circle the one which will deflate the fastest and underline the one that will deflate the slowest. Co2: when the power was turned off to a 125 l water heater, the temperature of the water dropped from 75. 0 c to 22. 5 c. The amount of heat, in kilojoules, transferred to/from the surroundings was: ___q = mc t = 2. 75x104 kj_______________: a solution of ch3cl and h2o is 45% h2o by mass; h2o is the solvent.
