Final answer:
The amount of dextrose in 500 ml of a 5% dextrose solution is 25 grams.
Step-by-step explanation:
To calculate the number of grams of dextrose in a 500 ml of a 5% dextrose solution, we use the percentage by mass definition. A 5% dextrose solution means that there are 5 grams of dextrose for every 100 milliliters of solution. Since the question asks for the amount in 500 ml, we calculate this by scaling up the concentration proportionally:
5 grams/100 ml × 500 ml = 25 grams
Therefore, the amount of dextrose in 500 ml of a 5% dextrose solution is 25 grams.