Why isn’t there anyone helping for chemistry I need this by literally tomorrow morning before 8:30 ;-; 4.) Draw XY3 where X has 5 valence electrons and Y has 7 valence electrons
5.) Draw AB2 where A has 2 valence electrons and B has 7 valence electrons.

Your friend offers to show you an intrusive igneous rock. which of the following would you expect to see?

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 are the chemical names of these compounds? ke: mg3n2: reset next