Rachel measured the mass of an empty 250cm3 flask. She then filled the flask with a gas of unknown molar mass at an atmospheric pressure of 100kPa and a temperature of 27 degrees. She found that the mass of the flask and contents increased by 0.44 g. Calculate the molar mass of the gas Rachel used to fill the flask​

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Answerwavelength;

W= fd
where f is an applied force and d is the distance over which it is applied. when a parachuting skydiver is at constant velocity, he is experiencing "terminal velocity", the point at which his acceleration down is canceled out by air resistance. that means that the resisting force of the air is equal to his weight, but in the opposite direction. with this, we can solve for the work done by the force.
w = fd
w = (92.0)(9.81 m/s^2) (325)
w= 2.93 x 10^5 j
the value for work in this case is positive because it is pushing up on the skydiver, who has a downward force of gravity.
therefore the answer is 2.93 x 10^5 j