Hexane is a common laboratory solvent and a component of petrol. its combustion reaction is as follows: 2 c6h14 (9) + 19 02(9) +12 co2(g) + 14 h20(1) arh=-8326 kj mol-1 use the reaction enthalpy value to calculate the heat in (kj) released by combustion of 0.121 mol of hexane. (give your answer as a positive number to at least three significant figures and do not include the units in the answer box)

Gusing the milligrams of ascorbic acid you entered above, the ratio of total sample volume to aliquot volume, and the total milligrams of the vitamin c tablet that you dissolved, calculate the mass of ascorbic acid in the vitamin c tablet for each trial. do this by scaling up to find the amount (mg) of ascorbic acid in your 250 ml flask. enter your calculated mass of ascorbic acid in the vitamin c tablet, for each trial. be sure to enter your calculated mass in the corresponding order that you entered your milligrams of ascorbic acid. the milligrams of ascorbic acid you entered for entry #1 previously should correspond to the mass of ascorbic acid that you enter for entry #1 here.