Question

THERMOCHEMISTRY Interconverting calories and joules Complete the following table. Round each of your answers to 3 significant digits energy content when eaten food cal kcal three ounces of cooked sirlain steak 240 x10 240 a corn mufin 145 a kiw frut 188 II

Answer 1

Answer three ounces ut cooked siri on steak. energy content = 2.40 x 105 cal 1 kcal = 103 cal energy content = 2.408 102 kcal - 240 kcal - 12.40 X 102 kw 1 kaal = 4.184 kJ 2.40 x 102 kcal) energy content = 240 kcal = 240X 4.184 kJ looy.16 ka - 11.00 x 103 ko A conn mutlin energy content = lus kaal ... = 145 x 103 cay = 11.45x105 cal energy content = lus kcal = 1458 4.184 kg = 606.68 kJ energy content = [607 kJ

A kiwi fruit energy content = 188 kJ Enery content = 188 kJ = (88 ko x lk cey 1 14.184 ks) = 144.9 k cel] Energy content = 44.9 kecel = 44-9x103 cael = 14:49x104 cel