assessment - 3 A miniature solar system with the sun...

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ekarika (ufe56) – assessment – cns assessment – (CH301) 1 This print-out should have 6 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 10.0 points At 25 C a 4 L sample of H 2 exerts a pressure of 5 atm. What pressure would the same sample exert in a 2 L container at 25 C? 1. 5.0 atm 2. 15.0 atm 3. 2.5 atm 4. 10.0 atm 5. 20.0 atm 002 10.0 points Which of the following is the correct Lewis structure for ethene (C 2 H 4 )? 1. C H H C H H 2. C H H H C H 3. C H H C H H 4. C H H H C H 003 10.0 points For which of the following elements would the size of the neutral atom (atomic radius) be largest? 1. Sr 2. K 3. Na 4. Rb 5. Ca 004 10.0 points What is the most current model of how the atom is constructed? 1. A donut shaped cloud of protons sur- rounding a dense nucleus containing electrons and neutrons 2. A loose collection of protons, neutrons and electrons all mixed up into a sphere
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Unformatted text preview: 3. A miniature solar system with the sun replaced by a dense nucleus made of protons and neutrons, with the electrons orbiting like planets 4. A dense nucleus of protons and neutrons surrounded by electron clouds of di²erent shapes and sizes 005 10.0 points What are the strongest inter molecular forces present in a liquid sample of NH 3 ? 1. interionic 2. hydrogen bonding 3. dipole-dipole 4. covalent 5. disperson ekarika (ufe56) – assessment – cns assessment – (CH301) 2 006 10.0 points The production of acid rain from the release of sulfur dioxide (SO 2 ) and nitrogen oxides (NO x ) into the atomosphere is generally asso-ciated with the burning of 1. Fuorocarbons. 2. coal. 3. gasoline. 4. batteries....
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