Question: 3: a: An engine wears away its copper lining at a rate of 4.28g per hour. If copper costs $0.195 per ounce, how many days

3: a: An engine wears away its copper lining at a rate of 4.28g per hour. If copper costs $0.195 per ounce, how many days will it take to wear away an engine lining that cost $157? b: What is the percent composition of chromium (IV) hydroxide

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3: a: An engine wears away its copper lining at a rate of 4.28g per hour. If copper costs $0.195 per ounce, how many days will it take to wear away an engine lining that cost $157

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