Question 6 (1 point) A highway engineer is researching de-icing compounds for clearing ice from streets in winter. She wants a
compound that has +2 ions and 1 ions in it. Which would work?
aluminum combined with sulfur
potassium combined with iodine
magnesium combined with chlorine
silicon combined with oxygen
Question 7 (1 point)
When CaCl, dissolves in water, which is true?
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How is the composition of a meteorite relevant to finding out the composition of earth's core?

If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.

Quiz1. which physical state of nitrogen has the highest entropy? a solid© b gasoc liquid