Agoodyear blimp typically contains 5400 m³ of helium (he) at an absolute pressure of 1.10 × 10 5 1.10 × 10 5 pa. the temperature of the helium is 295 k. what is the mass (in kg) of the helium in the blimp? (the molar mass of helium is 4.0026 g)

The concept related to this exercise to solve this problem is the ideal Gas law which establishes

P= Pressure

V= Volume

n = Number of moles

R= Gas ideal Constant

T= Temperature

Our values are given as,

From the ideal gas equation then we rearrange the equation to obtain the number of moles, then

By definition the molecular mass (n) is expressed in terms of the mass and molecular weight therefore

Therefore the mass of the helium in the blimp is 968.327Kg

total distance travelled = 60 miles

total time taken =1.5 hours

average speed = total distance / total time

60 / 1.5

= 40

therefore, average speed = 40 m/h

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option number c is the right answer.