Question

A chemist needs a 50% of sulfuric acid. She mix 2 liters of 20% of sulfuric acid with a sample of 60% of sulfuric acid. Write a equatoin that models the situation and use it to find how much the 50% of the sulfuric acid she needs to use?

Answer 1

Ok, she has figured out how to make 50 percent solution, and the above

Ok, how much 60Percent she needs?

2liters*.2 + V*.6=(V+2).5

solve for V
.4+.6V=.5V+1
.1V=.6
V=6 liters

check my math.