Answer to Question #309151 in Chemistry for cee

Question

1,Lisa consumes a total of 8700 kilojoules per day and her diet consists of 55% of carbohydrates. Calculate the quantity of carbohydrates that her diet provides per day in grams and choose the correct answer.

a.81 g

b.4785kJ

c.281 g

d.106 g

2.Mr Naidoo consumes 157 g of carbohydrates, 107 g of fat and 238 g of protein per day. Calculate the energy provided by each of the energy-yielding nutrients.

a.Protein = 238kJ; Carbohydrates = 157kJ and Fat = 107kJ

b.Protein = 4046kJ; Carbohydrates = 2669kJ and Fat = 4066kJ

c.Protein = 4046kJ; Carbohydrates = 2669kJ and Fat = 1819kJ

d.Protein = 4046kcal; Carbohydrates = 2669kcal and Fat = 4066kcal

Answer 1

1. Carbohydrates contain 16.7 kJ per gram.

8700 x 0.55 = 4785 kj

4785 / 16.7 = 281 g

2.b.Protein = 4046kJ; Carbohydrates = 2669kJ and Fat = 4066kJ