A container with a piston contains 2.0 moles of ideal gas at temperature 20.0 C. During some process, pressure in this container decreased 2.0 times meanwhile volume increased 5.0 times and 1 mole of gas was removed from the container. Find final temperature of gas. Give answer in degrees of C.

Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.