A container with volume 1.58 L is initially evacuated. Then it is filled with 0.246 g of N₂. Assume that the pressure of the gas is low enough for the gas to obey the ideal-gas law to a high degree of accuracy. Part A If the root-mean-square speed of the gas molecules is 162 m/s, what is the pressure of the gas? Express your answer in pascals. p= ΑΣΦ IVO Pa

5.0 g of nitrogen gas at 20°C and an initial pressure of 2.8 atm undergo a constant-pressure expansion until the volume has tripled. Part A What is the gas volume after the expansion? Express your answer with the appropriate units. ► View Available Hint(s) V= Submit HA Value Previous Answers Units ? X Incorrect; Try Again; 5 attempts remaining

Which of the following should be done to lower the pressure of 1.0 mole of an ideal gas in a 22.4 L container to absolute zero?     A Add another mole of gas to the container.     B Cool the gas to zero degrees celsius.     C Cool the gas to absolute zero.     D Compress the container to one-third the size.     E Triple the volume of the container.

For a planet to have an atmosphere, gravity must be sufficient to keep the gas from escaping The escape speed a particle needs to escape the earth's gravitational attraction is 1.1 x 10 m/s. The motion of projectiles never depends on mass, so this escape speed applies equally to rockets and to molecules in the earth's upper atmosphere. Part A At what temperature does the rms speed of nitrogen molecules equal the escape speed? Express your answer in kelvins. ΜΕ ΑΣΦΑ T- Submit Part B T- Request An At what temperature does the mms speed of hydrogen molecules equal the escape speed? Express your answer in kelvins. VAZO Submit ? K K