A helium balloon has a volume of 735 mL when it is at ground level. The balloon is
transported to an elevation of 5km, where the pressure is only 0.8atm. At this altitude the gas
occupies a volume of 1286mL. Assuming the temperature has remained the same, what was
the ground level pressure?
O
A.
1.4atm
OB. 0.7atm
O c. 12am
OD. 1.0atm
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