Problema Solution
A total of 2,000 mL of a 7% NaCl solution is needed. However, only a 12% solution of sodium chloride is in stock. How many milliliters of the 12% NaCl solutin are needed to make 2,000 mL of the 7% solution? Round to the nearest whole number.
Answer provided by our tutors
12% NaCl solution: x
So
12%x = 2000*7%
x = 1167
So 1167 ml of 12% NaCl solution is needed