use:\n1 calorie = 4.184 joules\n1 calorie = 1000 calories (a calorie is a kcal)\na pretzel bag shows that a…

use:\n1 calorie = 4.184 joules\n1 calorie = 1000 calories (a calorie is a kcal)\na pretzel bag shows that a serving of 1 hard pretzel provides 90 calories.\nif you ate the whole bag (3 pretzels), how many joules would that be?

use:\n1 calorie = 4.184 joules\n1 calorie = 1000 calories (a calorie is a kcal)\na pretzel bag shows that a serving of 1 hard pretzel provides 90 calories.\nif you ate the whole bag (3 pretzels), how many joules would that be?

Answer

Explanation:

Step1: Calculate total Calories

Since 1 pretzel has 90 Calories and there are 3 pretzels, the total Calories is $90\times3 = 270$ Calories.

Step2: Convert Calories to calories

Since 1 Calorie = 1000 calories, then 270 Calories is $270\times1000=270000$ calories.

Step3: Convert calories to Joules

Since 1 calorie = 4.184 Joules, then 270000 calories is $270000\times4.184 = 1129680$ Joules.

Answer:

1129680