The nutritional label on the package indicates that a cookie contains 150 Calories. Express this value in kJ and in J
To convert the calorie value to kilojoules (kJ), you can use the fact that 1 calorie is equal to 4.184 joules, and 1 kilojoule is equal to 1000 joules.
Step 1: Convert the calorie value to joules:
150 Calories * 4.184 joules/calorie = 626.4 joules
Step 2: Convert the joule value to kilojoules:
626.4 joules / 1000 = 0.6264 kilojoules (kJ)
So, the cookie contains approximately 0.6264 kilojoules (kJ).
To express this value in joules (J), you simply need to multiply the calorie value by 4.184, as there are 4.184 joules in one calorie.
150 Calories * 4.184 joules/calorie = 626.4 joules
Therefore, the cookie contains approximately 626.4 joules (J).