Problema Solution
Chandra has 2 liters of a 30% solution of sodium hydroxide in a container. What is the amount and concentration of sodium hydroxide solution she must add to this in order to end up with 6 liters of a 46% solution?
Answer provided by our tutors
2*30% + 4*x% = 6*46%
0.6 + 4*x% = 2.76
4*x% = 2.76-0.6
4*x% = 2.16
x% = 0.54
x = 54%
so we need 4 liter of 54% solution