Question 15 How many moles of nitrogen atoms are there in 1.64 x 1023 molecules of dinitrogen trichloride? 0.545 mol 0.817 mol x • 0.272 mol 36.6 mol 110 mol Question 16 How many grams of chlorine atoms are present in a 3.17 g sample of barium chloride (BaCl2)? Enter your answer in decimal form with the correct number of sig figs. Use the proper abbreviation for the units. Answer: 0.539 x (1.08) g✓