A Sample of Mercury(II) Oxide Is Placed in a 5 $\circ$

A sample of mercury(II) oxide is placed in a 5.00 L evacuated container and heated until it decomposes entirely to mercury metal and oxygen gas. The container is then cooled to 25 ^$\circ$ C. One now finds that the gas pressure inside the container is 1.73 atm. What mass of mercury(II) oxide was originally placed into the container

A) 1.51 g
B) 45.6g
C) 76.6 g
D) 913 g
E) 153 g

Correct Answer:

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