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At STP the pressure of a gas is ____ torr; its temperature is _____ degree C = _

ID: 524147 • Letter: A

Question

At STP the pressure of a gas is ____ torr; its temperature is _____ degree C = ____ k. The molar volume of a gas at STP is ____ mL. If the initial conditions of a gaseous system are: P_1, V_1, T_1 and its final conditions are P_2 V_2, T_2, the final volume (V_2) of the gas expressed in terms of V_1, P_1, T_1, P_2, and T_2 is When hydrogen gas is collected by displacement of water, there is always water vapor mixed with the gaseous hydrogen. The partial pressure exerted by water vapor is called its vapor pressure and in numerical value depends on the_ ____ of the gaseous mixture. Look up the vapor pressure of water vapor at 20 degree C in Appendix G. Its vapor pressure is _____ torr. If the pressure of a gas is 760 mm of water, its pressure is ____ torr (mm of mercury). (the density of mercury is 13.6 g/mL). The equivalent weight of a metal b that weight of the metal that will liberate 1.008 g of hydrogen gas (H_2) from an acid. However, 1.008 g of hydrogen is ____ mol = _____ mL at STP. The equivalent weight of aluminum is 9.0 g. The number of mols of hydrogen gas produced by the reaction between 2.00 g of Al and an acid is _____ mol. The volume of the liberated gas at STP is ____ mL.

Explanation / Answer

1) At STP, the pressure of gas is 760 torr, its temperature is 25 oC = 298.15 K

2) The molar volume of gas at STP is 22.4 x 10^3 mL

3) P1V1/T1 = P2V2/T2 ;
   V2 = (P1V1/T1)*(T2/P2)

4) Temperature

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