Municipal 7590

One m3 of air weighs 13/10 kg, and the same volume of municipal gas is 4/5 kg. How many times is a gas lighter than air?

Correct answer:

k =  1.625

Step-by-step explanation:

h1=1013=1.3 kg/m3 h2=54=0.8 kg/m3  k=h1/h2=1013/54=1013:54=1013 45=10 413 5=4065=813=185=1.625

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