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Chemistry 9 Online
OpenStudy (anonymous):

A forgetful soul leaves his 100-watt porch light on overnight for 100 days each year. It is on for an additional 9.5 hours each time and the cost of electricity is 10.0 cents/kW-hr. The amount of additional electrical energy he uses = _______and the total amount of additional money he must pay each year = $_______ .

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