How many grams of sodium chloride are needed to prepare 750 g of a 0.90% sodium chloride solution
To find out how many grams of sodium chloride are needed to prepare a 0.90% sodium chloride solution, you can follow these steps:
Step 1: Convert the concentration from percentage to decimal form.
The concentration of 0.90% can be written as 0.90/100 = 0.009.
Step 2: Calculate the mass of sodium chloride.
Mass of sodium chloride = concentration * mass of solution
In this case, the mass of the solution is given as 750 g, so:
Mass of sodium chloride = 0.009 * 750
Step 3: Calculate the final answer.
Mass of sodium chloride = 6.75 g
Therefore, 6.75 grams of sodium chloride are needed to prepare 750 grams of a 0.90% sodium chloride solution.