how much energy and joules are in bag of crisps?
To determine the amount of energy in a bag of crisps, you need to consider the nutritional information provided on the packaging. Specifically, you should look for the energy content listed in either kilocalories (kcal) or kilojoules (kJ).
1 kilocalorie (kcal) is equal to 4.184 kilojoules (kJ).
Typically, the energy content of a bag of crisps can vary depending on factors such as the size of the bag, the specific brand, and the flavor. However, let's assume you have a standard bag of crisps, approximately 1 ounce (28 grams).
1. Look for the nutritional information on the back or side of the crisps packaging. It usually includes the energy content per serving or per 100 grams.
2. Check if the energy value is listed in kilocalories (kcal) or kilojoules (kJ). Most packages provide values in kilocalories (kcal).
3. If the energy is listed in kilocalories (kcal), you can convert it to kilojoules (kJ) by multiplying the value by 4.184.
For example, if the bag of crisps states an energy content of 150 kilocalories (kcal), you can calculate the equivalent energy in kilojoules as follows:
150 kcal x 4.184 kJ/kcal = 626.4 kilojoules (kJ)
Therefore, a bag of crisps with an energy content of 150 kilocalories (kcal) contains approximately 626.4 kilojoules (kJ).