Answer:
#3
Step-by-step explanation:
A star is written to show multiplication. It is a replacement for a dot or a x which is what you probably learned to be the "times" sign. In upper level maths, the "x" is replaced with a " * " to make it more legible and to avoid confusion with the variable "x".
Answer:
polar liquids and polar solids
Step-by-step explanation:
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