how many joules of nutritional energy are in a bag of chips whose label reads 245 Cal? if 1 lb of fat is stored by the body for each 14.6X10(3) KJ of excess nutritional emergency consumed.how many bags of chips contain enough nutritional energy to result in 1lb of body fat?
245Cal x 4182J=1.03x10(6)J
(14.6x10(3)kJ x 1000J)/1.03x10(6)J=14.2
Rounded to 3 sig figs
Sandra was correct the answer is 14.2 bags.
all of these wrong.
To determine the number of joules of nutritional energy in a bag of chips, we need to convert the calorie value provided on the label into joules.
1 calorie (cal) is equal to 4.184 joules (J).
Given that the bag of chips has a label of 245 calories (Cal), we can calculate the nutritional energy in joules as follows:
245 Cal * 4.184 J/cal = 1023.48 J
Therefore, there are approximately 1023.48 joules of nutritional energy in a bag of chips.
Now, let's calculate how many bags of chips would contain enough nutritional energy to result in 1 lb of body fat.
We are given that for every 14.6 x 10^3 kilojoules (KJ) of excess nutritional energy consumed, 1 lb of body fat is stored.
1 kilojoule (KJ) is equal to 1000 joules (J).
Therefore, 14.6 x 10^3 KJ is equal to 14.6 x 10^3 x 1000 J = 14.6 x 10^6 J (Joules).
Now, let's calculate the number of bags of chips we need to consume to obtain 14.6 x 10^6 joules of nutritional energy:
Number of bags = Nutritional energy required (in joules) / Nutritional energy per bag (in joules)
Number of bags = 14.6 x 10^6 J / 1023.48 J
Number of bags ≈ 14,263
Therefore, approximately 14,263 bags of chips contain enough nutritional energy to result in 1 lb of body fat.
245 Cal = 245 kcal = 245,000 calories
1 calorie = 4.184 J; therefore,
245,000 cal x (4.184 J/cal) = ? J.
?J x (1 kJ/1000) x (1 lb/14.6E3) = ?