Determine the mole fraction of the solute if you have 3.4 grams kcl in 8.1 grams h2o
a)0.092
b)0.420
c)0.101
d)0.63

What can be added to the examples section of each circle? endothermic: ice melting into water, and a heat pack becoming warm exothermic: a glow stick glowing, and fireworks exploding endothermic: ice melting into water, and an instant ice pack turning cold exothermic: fireworks exploding, and gasoline burning endothermic: a glow stick glowing, and a heat pack becoming warm exothermic: an instant ice pack turning cold, and ice melting into water endothermic: gasoline burning, and an instant ice pack turning cold exothermic: ice melting into water, and an instant ice pack turning cold

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion