Cinnabar (HgS) is the ore of mercury metal (Hg). When reacted in a smelter with gaseous oxygen (O2), cinnabar yields as products pure elemental mercury, plus sulfur dioxide (SO2). Write down and balance the equation for this reaction; then, determine how much elemental mercury can be obtained from 1.00kg of cinnabar, assuming 100% yield from the reaction.

How are elements arranged in a periodic table

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.

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.