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Chapter 13, Problem 26P

(a)

To determine

Find the amount of natural gas needed to burn to heat twenty gallons of water, if the water heater has an efficiency of 78%.

(b)

To determine

Find the amount of natural gas needed to burn to heat twenty gallons of water, if the water heater has an efficiency of 85%.

(c)

To determine

Find the amount of natural gas needed to burn to heat twenty gallons of water, if the water heater has an efficiency of 90%.

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