- I need backgroung info on ionic and covalent bondings?

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Math Functions Help? Why aren't ants and bees as big as animals and humans? A 20.0g sample of an element contaings 4.95*10^23atoms. Identify the element. a)Cr B) O C) Mg D) Fe? I need to show my work don't understand? Other than earth, what is the most interesting planet in our solar system and why? Let n>1 be a composite number. Prove that n does not divide (n - 1)! - 1(Hint: Factor n as n = ab with a,b < n. Argue by contradiction)?

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