Large helium-filled balloons are used to lift scientific equipment to high altitudes. (a what is the...

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Large helium-filled balloons are used to lift scientific equipment to high altitudes. (a what is the pressure Inside such a b

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Answer 1

Answer #1

a)

Considering ideal gas equation

p1 v1 / t1 = p2 v2 /t2

p2 = p1 v1 t2/ ( v2 t1)

v2 = 18 v1

p2 = p1 v1 t2 / ( 18 v1 t1)

p2 = p1 t2 / ( 18 t1)

p2 = 1 * (273 - 33.7) / (18* ( 273 +26.8))

p2 = 0.0443 atm

===========

b)

absolute pressure is given by

Pabs = Patm + Pgauge

Pgauge = 0.9997 - 0.0443

Pgauge = 0.955 atm

=======

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Answer 2

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