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How many hydrogen atoms in 2.25 g of methane? Hi. Out of 45 questions I had 4 wrong. What is percentage of correct please.? The graph of which exponential function passes through the points (0, 4) and (1, 24)? Are we really living organisms or a simulation? What is the simplified answer to x^2-y^2 over 3x-3y divided by 4x+4y over 8x Please show how you arrived at this answer?