Question 19 1 Point An organic acid contains C, H, and O. In one combustion analysis, 5.24 g of acid yields 7.86 g CO2 and 2.14 g H20. Calculate the empirical formula and molecular formula of acid given that its molar mass is about 176 g/mol. Empirical formula - C,H,O ; molecular formula - C H2004 Empirical formula - CH20 ; molecular formula - C4.82 612 Empirical formula - C,H,O, ; molecular formula - CHO Empirical formula - CH molecular formula - CH2002 Question 22 1 Point How much gram of potassium dichromate [K2Cr2O7 molar mass = 294.2 g/mol) required to make 465 mL of 0.3550 M aqueous solution? (A) 103.35 g B 69.45 g 48.56 g 99.78 g