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.Suppose 4.57 g of c8h18 is mixed with 31. g of o2. Calculate the minimum mass of c8h18 that could be left over by the chemical reaction.? Physics, Flat mirror equation.? Calculate [OH-] at 25°C for a solution having [H+] = 2.78 x 10^-7 M? Factor 2x^3 -3x^2 + 1 Completely? What is the mass of carbon in a 5-carat diamond that contains 5.00 x 10^22 atoms of carbon?