Question

A&B please

Review Constants 1 Periodic Table A cylinder, with a piston pressing down with a constant pressure, is filled with 1.90 moles of a gas (ni), and its volume is 46.0 L (V . If 0.600 mole of gas leak out, and the pressure and temperature remain the same, what is the final volume of the gas inside the cylinder? Express your answer with the appropriate units. View Available Hint(s) V - Value Units Submit Previous Answers X Incorrect; Try Again; 5 attempts remaining Part B A sample of gas in a cylinder as in the example in Part A has an initial volume of 46.0 L, and you have determined that it contains 1.00 moles of gas. The next day you notice that some of the gas has leaked out. The pressure and temperature remain the same, but the volume has changed to 11.5 L. How many moles of gas (12) remain in the cylinder? Express your answer with the appropriate units.

Answer 1

(A) Initi al moles, = 1.90 mol Initi al volume, V = 46.0 L Amount of moles leaked out = 0.600 mol Final moles, = 1.90 mol - 0.600 mol = 1.3m ol Final volume, = ? At constant temperature and pressure the relation between number of moles and volume is 2 Substitute the corresponding values in the above equation to caluclate the value of V 1.3m ol x46.0 L 1.90 mol 31.5 L Therefore, the required soluti on is 31.5L (B) Initial moles, n 1.00 mol Initi al volume, = 46.0 L Final moles, n Final volum e, V, = 11.5L At constant temperature and pres sure the relation between number of moles and volume is 2 Substitute the corresponding values in the above equation to caluclate the value of n п, 1.00 mol x11.5 L 46.0L = 0.25 mol Therefore, the required solution is 0.25 mol