A sample of 1.5 g NaWO4 dehydrate is dissolved in 25 mL DI H2O. .75g granulated Zn was added then heated to 70 C. 75 mL of 3M sulfuric acid was then added to consume the Zn then heated to 70 C.
A titration was set up with standard potassium permanganate solution(.020 M). A volume of 17 mL potassium permanganate was need to reach the endpoint.
1) Calculate empirical formula. Please show steps and explain.