webquiz_1 - Grodin, Micah Webquiz 1 Due: Feb 3 2006, 11:00...

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Unformatted text preview: Grodin, Micah Webquiz 1 Due: Feb 3 2006, 11:00 pm Inst: Sara Sutcliffe 1 This print-out should have 5 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. The due time is Central time. 001 (part 1 of 1) 10 points A metal (call it X) in Group IIA of the peri- odic table forms a compound with an element (call it Y) of Group VIIA. What would be the most likely formula and nature of the compound? 1. XY 6 ; covalent 2. XY 2 ; covalent 3. XY 2 ; ionic 4. X 2 Y; covalent 5. X 2 Y; ionic 002 (part 1 of 1) 10 points Which statement is true? 1. Increasing the hydrogen ion concentration by a factor of 3 would lower the pH by 3 pH units. 2. Hard water is very likely to have high con- centrations of calcium and magnesium ions which react with soap to form insoluble com- plexes. 3. Water would solvate cations by orienting the hydrogens of the water molecules toward the positive charges since the hydrogens have a partial positive charge.a partial positive charge....
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webquiz_1 - Grodin, Micah Webquiz 1 Due: Feb 3 2006, 11:00...

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