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.
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.
To find out how many grams of mannitol the patient receives in 20 hours, we need to calculate the total amount of mannitol received over this time period.
First, we need to determine the amount of mannitol in the solution. The concentration is given as 20% (m/v), which means there are 20 grams of mannitol per 100 mL of solution.
Next, we need to find out how much solution the patient receives every hour, which is given as 100 mL.
Now, we can calculate the amount of mannitol received per hour:
Amount of mannitol per hour = (20 grams/100 mL) × 100 mL = 20 grams
To find the total amount of mannitol received in 20 hours, we multiply this amount by the number of hours:
Total amount of mannitol in 20 hours = 20 grams/hour × 20 hours = 400 grams
Therefore, the patient receives 400 grams of mannitol in 20 hours, expressed using two significant figures.
To find out how many grams of mannitol the patient receives in 20 hours, we need to first calculate the amount of mannitol received in one hour and then multiply it by 20.
The mannitol concentration is given as 20% (m/v), which means that there are 20 grams of mannitol in 100 mL of solution. We can use this information to determine the amount of mannitol in 1 mL of solution.
20 grams mannitol / 100 mL solution = 0.2 grams mannitol / 1 mL solution
Since the patient receives 100 mL of solution every hour, we can multiply the above conversion factor by 100 to find the amount of mannitol in one hour.
0.2 grams mannitol / 1 mL solution * 100 mL solution = 20 grams mannitol / 1 hour
Finally, to find the amount of mannitol received in 20 hours, we can multiply the amount in one hour by 20.
20 grams mannitol / 1 hour * 20 hours = 400 grams mannitol
Therefore, the patient receives 400 grams of mannitol in 20 hours.