Question

A gas hot water heater is 65% efficient. The energy output to heat the water is 2.3 kWh.

Answer 1

Answer:

3.5 kWh

1.2 kWh are lost

Explanation:

65=2.3/Ein*100

0.65=2.3/Ein

Ein=2.3/.65

Ein=3.5

3.5-2.3=1.2 kWh