An "energy bar" contains 5.6g of fat.
a)How much energy is this in joules?
b)How much energy is this in calories?
c)How much energy is this in Calories?.
isn't there 9 Calories (kcal) in each gram of fat?
To answer these questions, we need to know the conversion factors.
a) To find the energy in joules, we can use the conversion factor: 1 calorie = 4.184 joules.
b) To find the energy in calories, no conversion is needed since the given fat content is already in grams.
c) To find the energy in Calories, we use the conversion factor: 1 Calorie (with a capital "C") = 1 kilocalorie = 1000 calories.
Now, let's do the calculations.
a) To find the energy in joules, we can multiply the fat content in grams by the conversion factor:
Energy (in joules) = 5.6g of fat x 1 calorie/4.184 joules
= 1.34 calories
So, the energy content of the energy bar is approximately 1.34 joules.
b) The energy content in calories is the same as the given fat content in grams:
Energy (in calories) = 5.6g of fat
So, the energy content of the energy bar is approximately 5.6 calories.
c) To find the energy in Calories, we can use the conversion factor:
Energy (in Calories) = 5.6g of fat / 1 calorie/1000 calories
= 0.0056 Calories
So, the energy content of the energy bar is approximately 0.0056 Calories.