71.4 grams of 6.28 cubic feet? how much heat would it take for a hot air balloon?

Question

71.4 grams of 6.28 cubic feet? how much heat would it take for a hot air balloon?

Answer 1

http://www.overflite.com/thermo.html

Strange site uses Absolute Fahrenheit (Rankin).  But then you are mixing grams with cubic feet.   = 2.52 ounces

2.52 / 6.28 = 0.401 ounces per cubic foot needed

You will have to calculate, because it runs off the table and you didn't give the ambient air temp, but at 30F ambient, it looks like it will be about 250F rise - fry the balloon?