Does Popcorn Have The Highest Amount Of Kcalories Per Gram?

The data from the experiment rejects my hypothesis because the rice cakes had the highest experimental Kcalories per gram but I thought that popcorn would have the highest Kcalories per gram. It was hypothesized that popcorn would have the highest amount of Kcalories per gram when burned. My claim is true in the theoretical conditions. According to the data collected in the experiment, it shows that rice cakes had the highest experimental Kcalories per gram at 1.141 Kcalories per gram. I hypothesized that popcorn would have the highest Kcalorie per gram but it had the 2nd most Kcalorie per gram at 1.11. These results make sense, since popcorn has the highest theoretical Kcalories per gram at 4.64 Kcal/gram; while rice cakes have the second