Question

A physicists performs an experiment to evaluate the number of moles of a gas inside a container. The container is kept at constant room temperature of 23°C and is built in such a way that the number of moles stays constant. The physicist changes the volume to different values and measures the corresponding (absolute) pressures. The table below shows the results of the experiment.

V 50 ml 45 ml 40 ml 35 ml 30 ml 25 ml

P 129 kPa 142 kPa 160 kPa 182 kPa 213 kPa 256 kPa

Make a plot of P vs 1/V (if you plot P vs V the plot is not liner) and calculate the slope of it. 5.1 Value of the slope = Assuming the gas obeys the ideal gas law, use the value of the slope to find the number of moles. Pay attention in using the correct units for all the quantities. For example the gas constant R has the value 8.314 if V is expressed in m3, P in Pascal and T in degrees Kelvin. 5.2 Number of mole n = (0.0026)

Answer 1

do comment for any difficulty.