A portion of the periodic table is shown below: A portion of the seventeenth and eighteenth columns of the periodic table is shown. Column 17 reads nine fluorine 18.998 and 17 chlorine 35.453. Column 18 reads 10 neon 20.180 and 18 argon 39.948. Which element has the electron configuration 1s22s22p6? Argon (Ar) Chlorine (Cl) Fluorine (F) Neon (Ne)

What are the similarities of physical and chemical change ?

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.

Calculate the mass of carbon in 97.0 g of sucrose c12h22o11