[buhjammies]

The problem is:

Calcium Oxalate (CaC2O4) is insoluble in water. For this reason it can be used to determine the amount of Ca2+ ions in fluids such as blood. The calcium oxalate isolated from blood is dissolved in acid and titrated against a standardized KMnO4 solution as shown in Problem 4.96. In one test it is found that the calcium oxalate isolated from a 10.0mL sample of blood requires 24.2 mL of 9.56 x 10-4 M KMnO4 for titration. Calculate the number of milligrams of calcium per milliliter of blood.

Chemistry 2 is so hard. T___________T;;

I don't know how to do anything! Please explain step by step. I'm so lost!

[renge ishyo]

Here are some hints to get you started:

1. You are going to use M₁V₁ = M₂V₂ in step #1.

2. Once you have found the concentration of calcium ions (i.e the molarity) you can use dimensional analysis to convert this to a concentration with mg/mL for units.

[AWK]

Start from a balanced reaction

[Borek]

Idea behind titration: http://www.titrations.info