One brand of vinegar has a pH of 4.5. Another brand has a pH of 5.0. The equation for the pH of a substance is pH = –log[H+], wh
ere H+ is the concentration of hydrogen ions. What is the approximate difference in the concentration of hydrogen ions between the two brands of vinegar?
The vinegar with pH 4.5 has 2.2*10^-5 more hydrogen ions than the vinegar with pH 5.0.
Explanation:
To identify the difference, we must first find the H+ of both. We can do this by using the equation [H+]=10^-pH. After we do that we know that the vinegar with a pH of 5.0 has [H+]=1.0*10^-5 and the vinegar with a pH of 4.5 has [H+]=3.2*10^-5. The difference is found by subtraction.
Answer:So a Man sold an article for $90 and made a 12.5% profit.
First what’s 10% of $90=$9Second 1%of $90=$0.90Third what’s 1/2 or 50% of $0.90=$0.45Now$9+$0.90+$0.90+$0.45=$11.25$90+$11.25=$101.25Answers:Profit=$11.25Price=$101.25