"what is salt composed of? " maria wondered. she took a microscope from the cabinet in her science classroom, put some salt on a microscope slide, and focused on the salt. she saw tiny squares on the slide. "i guess salt is made only of crystals: " maria observed. is maria correct in her conclusion?

If a plot weight (in g) vs. volume (in ml) for a metal gave the equation y= 13.41x and r^2=0.9981 what is the density of the metal?

0.09 moles of sodium sulfate in 12 ml of solution

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.