1. What volume of N2, measured at 21 °C and 723 mm Hg, will be produced by the decomposition of 10.9 g NaN3?
2 NaN3(s) 2 Na(s) + 3 N2(g)
2. To find the volume of a flask, it is first evacuated so it contains no gas. Next, 3.5 g CO2 is introduced into the flask. On warming to 23 °C, the gas exerts a pressure of 750.0 mm Hg. What is the volume of the flask in milliliters?
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