How many grams of NaCl are contained in 500ml of normal saline solution which is 0.85%(w/v).
(x g NaCl/500 mL)*100 = 0.85
Solve for x.
To determine the number of grams of NaCl contained in 500ml of normal saline solution at a concentration of 0.85% (w/v), we need to follow the steps below:
Step 1: Calculate the mass concentration.
The concentration is given as 0.85% (w/v), which means 0.85 grams of NaCl is present in 100 milliliters (ml) of the solution.
Step 2: Convert 500ml to grams.
To convert milliliters (ml) to grams (g), we need to know the density of the solution. Assuming the density is 1 gram per milliliter (g/ml), we can directly convert 500ml to grams.
Therefore, 500ml x 1g/ml = 500 grams.
Step 3: Determine the mass of NaCl.
Now, we can calculate the mass of NaCl using the concentration of 0.85%.
Mass of NaCl = (0.85g/100ml) x 500ml
Mass of NaCl = 4.25 grams
Therefore, there are 4.25 grams of NaCl contained in 500ml of normal saline solution at a concentration of 0.85% (w/v).
To find the number of grams of NaCl in the 500ml of 0.85% (w/v) normal saline solution, we need to use the formula:
Mass = Volume × Concentration
First, let's convert the volume to liters since the concentration is given as a percentage by weight per volume (w/v).
1 liter = 1000 ml
So, 500 ml = 500/1000 = 0.5 liters.
Now, let's calculate the mass of NaCl:
Mass = 0.5 liters × 0.85%
To calculate this, we will need to convert the percentage to a decimal by dividing it by 100:
Mass = 0.5 liters × 0.85/100
Now, plug the values into the formula:
Mass = 0.5 × 0.85/100 = 0.00425 grams
Therefore, 500 ml of 0.85% (w/v) normal saline solution contains 0.00425 grams of NaCl.