Question

Calculate the kilocalories contained in 500 mL of D50W.

Answer 1

500 mL of D50W contains 100 kilocalories (kcal) of energy.

Explaination

D50W is a solution of 50% dextrose in water. One liter of D50W contains 50 grams of dextrose, which provides 200 kilocalories (kcal) of energy. Therefore, 500 mL of D50W contains:

(50 grams/1000 mL) x 500 mL = 25 grams of dextrose

25 grams of dextrose provides:

25 grams x 4 kcal/gram = 100 kcal

So, 500 mL of D50W contains 100 kilocalories (kcal) of energy.

Answer 2

To calculate the kilocalories contained in D50W, the molarity of the solution is needed, which is not provided in the given information.

Step-by-step explanation:

To calculate the kilocalories contained in 500 mL of D50W, we need to know the molarity of the solution. Unfortunately, the given information does not provide the molarity of D50W. Therefore, we cannot directly calculate the kilocalories contained in the solution.

Molarity is needed to calculate the number of moles of solute, which is then used to determine the mass of the solute. Based on the given information, we do not have enough data to provide a specific calculation for the kilocalories in 500 mL of D50W.