A burger contains 220 nutritional calories. nutritional calories are actually kilocalories, one kilocalorie is equal to 1,000 calories. convert the burger���s energy into joules.
a. 9.2 �� 10 j
c. 2.2 �� 10 j
b. 9.2 �� 10 j
d. 5.5 �� 10 j