Calcium carbonate decomposes at 1200° C to form carbon dioxide and calcium oxide. If 75 liters of carbon dioxide are
collected at 1200° C, what will the volume of this gas be after it
cools to 225º C?

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Darren earned $663.26 in net pay for working 38 hours. he paid $118.51 in federal and state income taxes, and $64.75 in fica taxes. what was darren's hourly wage? question options: $17.45 $19.16 $20.57 $22.28