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Creating (or Breaking) Ionic Compounds-solutions

Creating (or Breaking) Ionic Compounds-solutions -...

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nanni (arn437) – Creating (or Breaking) Ionic Compounds – CNS – (87654) 1 This print-out should have 11 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 10.0points Which formula is likely to be INCORRECT? 1. BF 3 2. MgBr 2 3. H 2 O 4. SrO 5. CaCl 2 6. H 2 S 7. Cs 2 Cl 2 correct 8. SbCl 3 9. Sr 3 N 2 10. PH 3 Explanation: A cesium atom will lose one electron to form a Cs + ion. A chlorine atom will gain one electron to form Cl - . To equalize the charges, Cs + and Cl - must be present in a 1 : 1 ratio. The formula for cesium chloride should be CsCl. 002(part1of2)10.0points What is the formula for ammonium sulfate, which is formed from ammonium (NH + 4 ) ions and sulfate (SO 2 - 4 ) ions? 1. (NH 4 ) 3 (SO 4 ) 2 2. (NH 4 ) 2 (SO 4 ) 3 3. NH 4 (SO 4 ) 2 4. (NH 4 ) 2 SO 4 correct 5. (NH 4 )SO 4 Explanation: One ammonium ion has a +1 charge, so 2 ammonium ions are needed to balance 1 sulfate ion. 003(part2of2)10.0points The formula for magnesium carbonate is MgCO 3 . What is the charge of the cation in Ag 2 CO 3 ?
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