To calculate the grams of mannitol the patient receives in 20 hours, we first need to find the grams of mannitol in 100 mL of 20% (m/v) mannitol solution.
To do this, we multiply 100 mL by 20%:
100 mL * 20% = 100 mL * 0.20 = 20 mL
Next, we need to convert the mL of mannitol solution to grams. The density of pure mannitol is approximately 1 g/mL, so 20 mL of mannitol solution is equal to 20 grams of mannitol.
Finally, we multiply the grams of mannitol in one hour by 20, since the patient receives the solution every hour for 20 hours:
20 grams/hour * 20 hours = 400 grams
Therefore, the patient receives 400 grams of mannitol in 20 hours.
A patient receives 100 mL of 20% (m/v) mannitol solution every hour.
How many grams of mannitol does the patient receive in 20 hours?
Express your answer using two significant figures.
1 answer