0chasapressureof245atmthemassofthegasis321

This preview shows page 1. Sign up to view the full content.

This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: xide (NO) gas. What was the percent copper (by mass) in the sample? 3 Cu + 8 HNO3 → 3 Cu(NO3)2 + 2 NO + 4 H2O -48) A 5.00 L container of unknown gas at 25.0 °C has a pressure of 2.45 atm. The mass of the gas is 32.1 g. What gas is in the container? SO2 NO2 SO3 F2 Cl2 9) A 1.37 L vessel contains He at a temperature of 24.5 °C and a pressure of 205 mmHg. A 721 mL vessel contains Ne at a temperature of 36.2 °C and a pressure of 0.185 atm. Both of these gases are placed in a 2.00 L vessel at 302 K. What is the final pressure (in atm) in the 2.00 L vessel? 10) How much work, in joules, is done when the pressure is suddenly released from 4.56 atm to 1.25 atm on 45.4 g of O2 at 45 °C? 11) Using the heat of combustion of methanol as -726.6 kJ and the following data: C(graph) + 1/2O2 → CO(g) ΔH° = -110.5 kJ C(graph) + O2(g) → CO2(g) ΔH° = -393.5 kJ H2(g) + 1/2O2(g) → H2O(l) ΔH° = -285.8 kJ Determine ΔH° for the following reaction: CO(g) + 2 H2(g) → CH3OH(l) -512) Calculate △Hof of octane, C8H18(l), given the enthalpy of combustion of octane to CO2(g) and H2O(l), -5471 kJ/mol, and the standard enthalpies of formation of CO2(g) and H2O(l), -393.5 kJ/mol and -285.8 kJ/mol, respectively. 13) What is the wavelength of a bullet that is 0.450 g traveling at 2000. m/s? 14) What is the orbital designation for the quantum numbers n = 2, l = 1? 15) Which one of the following set of quantum numbers would not be allowed? n A) = 3, ℓ = 2, mℓ = -1 n B) = 3, ℓ = 2, mℓ = 1 n C) = 3, ℓ = 1, mℓ = -1 n D) = 3, ℓ = 0, mℓ = 0 n E) = 3, ℓ = 3, mℓ = 1 16) Choose the groups of molecules below in which all the molecules have a net dipole moment. A) iHCl3, O2, H2O S B) F, H2O, N2 H C) Cl4, HCl, NH3 C D) F, H2C=CH2, H2O H E) F, CH3Cl, H2O H -617) Draw the Lewis dot formulae for CO, NO and CH2PH3 18) According to principles of VSEPR theory specify the electron pair geometry and hybridization for the species AsCl52- 19) For BeCl2, the dipole moment of the molecule, hybridization on the central atom, and nu...
View Full Document

This document was uploaded on 01/29/2014.

Ask a homework question - tutors are online