The fired crucible is handled with oily fingers before its mass measurement. In part B the oil from the fingers is burned off.

The fired crucible is handled with oily fingers before its mass measurement. In part B the oil from the fingers is burned off. How does this technique error effect the reported percent water in the hydrated salt? EXPLAIN?The crucible is handled with oily fingers After mass measurement but before 3g sample of hydrated sale is measured. In part B oil from finger is burned off. How does this technique error affect reported percent water in Hydrated salt? Explain?