The volume of a gas is 4.0 L, the pressure is 1 atm, and the temperature is 200 K. A chemist changes one factor while keeping another constant so that the new volume is 5.0 L. Which of the following could be the new conditions? A. The final temperature is 100 K, while pressure remains constant.

B. The final temperature is 150 K, while pressure remains constant.

C. The final pressure is 1.5 atm, while temperature is kept constant.

D. The final pressure is 0.8 atm, while temperature is kept constant.

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.

What natural processes produce large quantities of co2

Water is initially present in a state where its molecules are far apart. during a change of state, its molecules slow down. which change of state has most likely taken place? from a gas to a liquid from a liquid to a gas from a solid to a liquid from a gas to a plasma