HOW MANY GRAMS WILL A CU METRE OF HELIUM LIFT?

Question

A CU METRE OF HELIUM AT EQUIVALENT TEMPERATURE & PRESSURE OF SURROUNDING AIR APPROX HOW MANY GRAMS WILL IT LIFT?

Answer 1

You need the weight of a m³ of air and of helium. Subtract the two for the lifting power.

Densities (will vary with temperature)

Hydrogen gas 0.089 kg/m³

Helium gas 0.18 kg/m³

Air 1.28 kg/m³

So subtracting for helium, 1.28 - 0.18 = 1.1 kg of lift, or 1100 grams

For hydrogen, 1.28 - 0.09 = 1.19 kg of lift, or 1190 grams

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Answer 2

I think the myth busters did this...try discovery .com