When solid KClO3 is heated, it decomposes to give solid KCl and O2 gas. A volume of 256 mL...

When solid KClO3 is heated, it decomposes to give solid KCl and O2 gas. A volume of 256 mL of gas is collected over water at a total pressure of 765 mmHg and 24 °C. The vapor pressure of water at 24 °C is 22 mmHg.

2KClO3(s) 2KCl(s) + 3O2(g)

a. What was the partial pressure of the O2 gas?

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b. How many moles of O2 gas were produced in the reaction?