which is one-way scientists indicate how precise and accurate experimental measurements are? 1. They record small simple data. 2. They keep accurate honest records 3. They make sure their experiments can be repeated. 4. They use significant figures in their measurement.

Explanation:

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answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.