Translation :
5)In the system in the figure, the M tap is opened and waited for a while. How many 'cm' is the distance, SO, from the point A of the gas when He gas exits from the A end of the pipe?
6) If the density of the mixture formed by 4 mol of NH, gas and 1 mol of gas with the general formula of CH2m2 is 10 g/ L, what is "n"?
7)3 grams of H in the figure is 1 gram of H from the container with gas, what is the final height of the piston when the gas is removed and the temperature of the system is increased to 546 °C.