Final answer:
The quantity of ascorbic acid in a vitamin C drink specified as having 1025mg of ascorbic acid is exactly 1025mg.
Step-by-step explanation:
The question is asking about the amount of ascorbic acid, also known as vitamin C, contained in a vitamin C drink with 1025mg of ascorbic acid specified. Since the question only mentions the presence of 1025mg of ascorbic acid, without mentioning any other substances that could alter the total weight, the quantity of ascorbic acid in the drink is exactly 1025mg. Other information provided regarding percentages of carbon, hydrogen, and oxygen in ascorbic acid, and molecular and empirical formulas, are additional insights but are not directly relevant to determining the quantity already specified in the drink.