Once you determine the Percent composition you can do various calculations
{"Image DocumentName": "Once you determine the Percent composition you can do various calculations", "Image ImageDescription": "How much potassium can be obtained in the decomposition of 50.0 g of K2Cr2O7? Multiply the Total mass by the percent = g.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}