A patient received 5.0 g of NaCl in 8 hours.
How many milliliters of a 0.40 % (m/v) NaCl (saline) solution were delivered?
To find the number of milliliters of a 0.40% NaCl solution that were delivered, we need to use the given information.
First, let's convert the 5.0 grams of NaCl to milliliters of the 0.40% NaCl solution.
Step 1: Calculate the total amount of NaCl in the 0.40% solution.
0.40% (m/v) means there are 0.40 grams of NaCl in 100 milliliters of the solution.
Step 2: Set up a proportion between the given amount of NaCl (5.0 grams) and the total volume of the 0.40% solution (x milliliters).
0.40 grams / 100 milliliters = 5.0 grams / x milliliters
Step 3: Cross multiply and solve for x.
0.40x = 5.0 * 100
0.40x = 500
x = 500 / 0.40
x = 1250
Therefore, 1250 milliliters of the 0.40% NaCl solution were delivered to the patient.
To calculate the number of milliliters of a 0.40% (m/v) NaCl solution that were delivered, we need to convert the mass of NaCl received by the patient into volume using the concentration of the saline solution.
Step 1: Convert the given concentration from percentage (m/v) to decimal form:
0.40% = 0.40/100 = 0.004
Step 2: Calculate the mass of NaCl in the 0.40% NaCl solution that is equivalent to 1 milliliter:
0.004 g/mL
Step 3: Divide the mass of NaCl received by the patient (5.0 g) by the mass of NaCl in 1 milliliter of the saline solution:
5.0 g / 0.004 g/mL = 1250 mL
Therefore, 1250 milliliters of a 0.40% (m/v) NaCl solution were delivered to the patient.
0.4% m/v means 0.4 g solute/100 mL solution
0.4 g NaCl/100 mL x ?mL = 5 g NaCl
Solve for ? mL