11th grade
posted by marisa .
how do you solve a dilution problem, this is chemistry

The standard way is to figure the moles you need in the new volume, subtract the moles you have (volume*Molarity), then add the grams of solute to the solution, add solvent to the specified volume, stir, label, and store appropriately.
Here is my favorite way.
Example1. You have 20 ml of 5MHCl, and want 500ml of .20M HCl.
ok, you are diluting it 5/.2or 25 times. you have to add one part original solution, and 24 parts water.
25 parts into 500ml is each part is 20ml. So add 20 ml of the original solution (1 Part), and 24 parts (480ml) water. STir, label, store appropriately.
Example2.
You have 4M CuSO4(aq). YOu want 315ml of .56M solution.
Ok, you are diluting it 4/.56=7.143 times. You must add on part original, and 6.143 water.
315ml into 7.143 parts is 44.1ml per part. So add 44.1ml original solution, add six 6.143 parts water (6.143*44.1=270.9 ml)
check: 270.9+44.1=315ml
Practice makes perfect. 
having a cabinet is a tradition begun by which president
Respond to this Question
Similar Questions

11th grade
The students of litchfield High school are in grades 9,10,11,12. Of the students , 1/4th are in 9th grade, 1/3rd are in 10th grade, 1/6th is in 11th grade and there are 300 in the 12th grade, how many students are there all together? 
Grade 11th Maths
This problem is related to ChapterSets. Please solve the question using x method. x method means x ∈ A ∩ B Q. If AUB=Ø, then prove that A=Ø,B=Ø 
Grade 11th Maths
(Second time posting this problem)This problem is related to ChapterSets. Please solve the question using x method. x method means x ∈ A ∩ B Q. If AUB=Ø, then prove that A=Ø,B=Ø 
Grade 11th Maths
(Second Time posting this problem)This problem is related to ChapterSets. Please solve the question using x method. x method means x ∈ A ∩ B Q. If AB=A then show that A∩B=Ø 
Grade 11th Maths
(Second time posting this problem)This problem is related to ChapterSets. Please solve the question using x method. x method means x ∈ A ∩ B Q. If A⊂B, then prove that B'⊂A' 
11th grade
Use the following functions to solve. f(x) = x2 + x + 1; g(x) = 5  2x; h(x) = x2 Solve f(g(1)) 
chemistry
Please help me with this dilution. Given a very concentrated tube of virus. Apply serial dilution to make 1:7500 dilution. Dilute virus in PBS 
To JJ
Your problem is somehow intertwined with another and I can't post an answer there. Solve the problem by applying the dilution formula of mL1 x M1 = mL2 x M2 
Math Data Management
How would you solve this problem. The mean of 10 numbers is 8. If an 11th number is now included, the mean becomes 9. What is the value of the 11th number? 
math
Are trigonometric functions taught in 11th grade, if so ,is it wrong that i wasn't tought that topic in 11th grade?