Problem

20. How many ml of 60 percent acid should be added to pure acid to make $50 \mathrm{ml}$ of 85 percent acid?

Answer

Expert–verified
Hide Steps
Answer

Final Answer: The amount of 60 percent acid that should be added to pure acid to make 50 ml of 85 percent acid is \(\boxed{18.75 ml}\)

Steps

Step 1 ：Let's denote the amount of 60% acid to be added as x. Then, the amount of pure acid (100%) is 50 - x.

Step 2 ：We can form the equation from this: \(0.60x + 1.00(50 - x) = 0.85 * 50\)

Step 3 ：Solving this equation, we find that x = 18.75

Step 4 ：Final Answer: The amount of 60 percent acid that should be added to pure acid to make 50 ml of 85 percent acid is \(\boxed{18.75 ml}\)

link_gpt

Popular Problems

Compute $\int_{0}^{\ln (2) / … Solve the triangle. \[ \mathr… QUESTION 2 - 1 POINT Solve th… 5. Suppose you are a computer… Answer the statistical measur… $(-\infty, 2) \cap(-6, \infty… A firm does not pay a dividen… Math 112 Section: 4. Tubercul… Find $y^{\prime}$ if $y=\ln \… 3. (3pts) Cherry trees in a c… More