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Question 11 (1 point) Solve the equation shown using a calculator. What is the answer rounded to the correct number of significant figures? 229.727 m - 27.07 m= ? Your Answer: Answer units Question 12 (1 point) (The formula in this problem may not be a real molecule.) How many grams of hydrogen atoms are present in a sample of C4H5 if there are 39.0 moles of carbon atoms in the sample? C = 12.01 g/mol H = 1.01 g/mol Round your answer with the correct number of significant figures. Your Answer: units Answer