key-eng-fall07-q8059x03

key-eng-fall07-q8059x03 - CHEM 2045C: Quiz 3 Show your work...

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CHEM 2045C: Quiz 3 NAME _______KEYS_______________ N #_______________ Show your work for full credit Eng Q8059x03 answer key is continued KEYS to the different versions (look for your compounds) 1. (3 pts) Predict the formula AND name of the solid product for the following combination reactions. Do not balance the reaction. Formula (2 pts) Name (1 pt) Al (s) + Br 2 (l) AlBr 3 (s) aluminum bromide Ag (s) + I 2 (s) AgI (s) silver iodide Al (s) + O 2 (g) Al 2 O 3 (s) aluminum oxide 2. Balance the following reactions using WHOLE NUMBERS. Do not forget the physical states. A. (6 pts) Carbon monoxide gas reacts with oxygen to produce carbon dioxide gas. write unbalanced eqn CO (g) + O 2 (g) CO 2 (g) balance C’s first 1 CO (g) + O 2 (g) 1 CO 2 (g) now balance O’s 1 CO (g) + ½ O 2 (g) 1 CO 2 (g) and re-write to get whole #’s 2 CO (g) + O 2 (g) 2 CO 2 (g) 3 pts correct formulae (1 pt each) 1 pt for (g) subscript – has to be on all three 2 pts balancing #. (6 pts) Solid potassium manganese (IV) fluoride ( i.e. , K 2 MnF 6 ) reacts with liquid antimony pentafluoride
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key-eng-fall07-q8059x03 - CHEM 2045C: Quiz 3 Show your work...

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