1. The volume of a gas is 120 L at 0.500 atm and 15.0C. What volume will it occupy at 0.250 atm and 10.0C? (please explain with steps). :)

2. The volume of a gas is 400. mL at 30.0C. What volume will it occupy at 50.0C if the pressure remains constant? (please explain with steps). ;)

Which of these best describes an ionic bond?

From the options provided for each element below, choose the properties that it may have based on its location in the periodic table fluorine (f): highly reactive nonmetal shiny a conductor

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.