Question #261746

1.   Calculate the number of grams of helium in a 1.00 L balloon at 27.0∘∘C and under 1.00 atmosphere of pressure.



Expert's answer

PV= nRT

1×1000=n×8.314×300

1000=2494.2n

n= 0.401

Molar mass of helium=4

= 0.401×4=1.604g


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