Answer to Question #158186 in General Chemistry for Bashtai

Question

A physicist 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.

Make a plot of P vs 1/V (if you plot P vs V the plot is not linear) and insert into document. Calculate the slope of the line, m.  Assuming the gas obeys the ideal gas law, use the value of the slope ‘m’ to find the number of moles. The slope calculated is related to the Universal Gas Constant, R, with the following equation: m = nRT. (Graph may be done using EXCEL).

Answer 1

T = const = 23°C = (23 + 273) K = 296 K

n = const