In the formation of alum, why is it appropriate to wash the sides of the
beakers/flasks with distilled water?
A. Extra water will evaporate away when the alum
crystals are formed.
B. Distilled water has potassium ions that are
needed to form the alum.
C. The alum is not soluble in water.

The tendency of water molecules to stick together is referred to as a) adhesion b) polarity c) cohesion d) transpiration e) evaporation

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.

Draw the structure for 5-isopropyl-2-methyl-3-nonene