Joseph Priestley discovered oxygen in 1774 by heating mercury(oxide. The compound decomposes into its elements. How much oxygen, O2, is produced by the decomposition of 25 g of HgO?
A. 1.8 g
B. 3.7 g
C. 5.5 g
D. none of these
Answer:A
Joseph Priestley discovered oxygen in 1774 by heating mercury(oxide. The compound decomposes into its elements. How much oxygen, O2, is produced by the decomposition of 25 g of HgO?
A. 1.8 g B. 3.7 g C. 5.5 g D. none of these