## bdurbin 3 years ago any one know how to do application problems?

1. TuringTest

application of what? could you please just post the question?

2. bdurbin

Dr. Patel wants his chemistrey class to prepar a 10ml mixture of 80% fluoride/20% peroxide the class is divided into pairs and assingsed to stations in the lab. At each station he places a solution mixture that is 60% floride/ 40% peroxide and a solution that is 100% fluoride. How much of the 100% fluoride do the students in his class need to add to 60%/40% mixture in order to get the desired mixture 80%/20%

3. marshallinwashington

Let x = the amount of 100% fluoride solution you need to add. 10ml is the original amount on solution So the total amount of solution after adding some 100% fluoride solution = 10ml + x The amount of fluoride after adding some 100% fluoride in the total amount of solution will = .8(10ml +x) The amount of fluoride in the original 10ml solution is .6(10ml)= 6ml So the total amount of fluoride in an 80% solution will = 6ml + x So our equation will be: 6ml + x = .8(10ml + x) So x= 10ml So we need to add 10ml of 100% fluoride solution