How does a balanced chemical equation demonstrate the Law of Conservation of Mass? (1 point) O it shows that only physical changes follow the Law of Conservation of Mass

O it shows that no atoms have been gained or lost during the reaction

O it shows that the properties of the elements stay the same after the reaction

O it shows that all compounds remain bonded after the reaction

Draw the more stable lewis dot structure for bro2-

What is the polyatamic ion of thiosulfate

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.