Question 9 (10 points) Listen A sample contains 1.3 moles of carbon, 7.8 moles of hydrogen, and 11.7 moles of oxygen. Find the empirical formula. What is the subscript for oxygen? Hint 1: The only thing you should put in the blank below is the number that is the subscript for oxygen in the correct empirical formula. Hint 2: This is basically just the very last part of your finding empirical formulas from percent composition problems. Your Answer: Answer Question 10 (10 points) Listen How many moles are in 8.28 x 1022 molecules of an unknown compound? Your Answer: Answer units