Question
the total kilojoules for one cup of orange juice that contains 24 g of carbohydrate, no fat, and 3 g of protein
Express your answer to two significant figures and include the appropriate units.
Express your answer to two significant figures and include the appropriate units.
Answers
Answered by
GPT 3.5
To calculate the total kilojoules for one cup of orange juice, we need to know the energy content of the carbohydrates and proteins.
Carbohydrates have 4 kilocalories per gram (kcal/g), which is equivalent to 16.7 kilojoules per gram (kJ/g). Therefore, 24 g of carbohydrates provide:
24 g * 16.7 kJ/g = 400.8 kJ
Proteins also have 4 kilocalories per gram (kcal/g), which is equivalent to 16.7 kilojoules per gram (kJ/g). Therefore, 3 g of protein provide:
3 g * 16.7 kJ/g = 50.1 kJ
Since fat is not mentioned in the question, we assume it is not present. Hence, there is no additional energy contribution from fat.
Adding the energy contributions from carbohydrates and proteins, the total kilojoules for one cup of orange juice is:
400.8 kJ + 50.1 kJ = 450.9 kJ
Expressed to two significant figures, the total kilojoules for one cup of orange juice is approximately 450 kJ.
Carbohydrates have 4 kilocalories per gram (kcal/g), which is equivalent to 16.7 kilojoules per gram (kJ/g). Therefore, 24 g of carbohydrates provide:
24 g * 16.7 kJ/g = 400.8 kJ
Proteins also have 4 kilocalories per gram (kcal/g), which is equivalent to 16.7 kilojoules per gram (kJ/g). Therefore, 3 g of protein provide:
3 g * 16.7 kJ/g = 50.1 kJ
Since fat is not mentioned in the question, we assume it is not present. Hence, there is no additional energy contribution from fat.
Adding the energy contributions from carbohydrates and proteins, the total kilojoules for one cup of orange juice is:
400.8 kJ + 50.1 kJ = 450.9 kJ
Expressed to two significant figures, the total kilojoules for one cup of orange juice is approximately 450 kJ.