PLEASE HELP HELP HELP What is the change in enthalpy of the first reaction below, given the enthalpies of the other two reactions? 2C(s) +0,(8) 200(g)
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C(s) +0,(g) - CO2(g) AH°-394 kJ/mol
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CO(s) +0,() CO2(g) AH° = -283 kJ/mol

How do i put 3(x+7) in distributive property

Find the condition that the zeros of the polynomial f(x) = x^3+3px^2+3px+r may be in a.p.

Exclude leap years from the following calculations. (a) compute the probability that a randomly selected person does not have a birthday on october 4. (type an integer or a decimal rounded to three decimal places as needed.) (b) compute the probability that a randomly selected person does not have a birthday on the 1st day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (c) compute the probability that a randomly selected person does not have a birthday on the 30th day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (d) compute the probability that a randomly selected person was not born in january. (type an integer or a decimal rounded to three decimal places as needed.)