87) Hydrogen and chlorine both have two naturally occurring isotopes: 1H (1.0078 amu; 99.985 percent abudundance) and 2H (2.01410; 0.015 percent abundance), 35Cl (34.969 amu; 75.53 percent abundance) and 37Cl (36.966 amu; 24.47 percent abundance). a) How many peaks would be expected in a mass spectrum of HCl(g)? b) At what molecular weights will peaks be observed? C) What should be the relative intensities of the peaks?

What are four significant sources of ghgs that come from wostem washington?

Which statement best describes the flow of energy in this scenario

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.