General Chemistry 1st. Edition by William J. Vining, Susan M. Young, Roberta Day, Beatrice Botch | 9781305275157 | 1305275152 | Holooly

General Chemistry

General Chemistry

270 SOLVED PROBLEMS

Question: 8.6.1

Determine polarity of molecules. Determine whether each of the following is polar. a. SO3 b. BrF3 ...

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You are asked to determine whether a molecule is p...

Question: 7.5.2

Write electron configurations for the following ions in spdf and orbital box notation. a. O^2− (Do not use noble gas notation.) b. I^− (Use noble gas notation.) ...

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You are asked to write an electron configuration f...

Question: 7.5.1

Write electron configurations for cations. Write electron configurations for the following ions in spdf and orbital box notation. a. Al^3+ (Do not use noble gas notation.) b. Cr^2+ (Use noble gas notation.) ...

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You are asked to write an electron configuration f...

Question: 5.6.2

Calculate enthalpy change using standard heats of formation. Using the standard heats of formation that follow, calculate the standard enthalpy change for the following reaction. 3 Fe2O3(s) + H2(g) → 2 Fe3O4(s) + H2O(g) Compound ∆Hfº (kJ/mol) Fe2O3(s) −824.2 Fe3O4(s) −1118.4 H2O(g) −241.8 ...

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You are asked to calculate the standard enthalpy c...

Question: 3.5.2

Use combustion analysis to determine empirical and molecular formulas (C, H, and O). A 1.155-g sample of butyric acid, an organic compound containing carbon, hydrogen, and oxygen, is analyzed by combustion and 2.308 g of CO2 and 0.9446 g of H2O are produced. In a separate experiment, the molar mass ...

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You are asked to determine the empirical and molec...

Question: 8.5.2

Identify molecular geometry. Identify molecular geometry Determine the shape of a. ICl5 b. SO3^2− ...

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You are asked to determine the shape of a molecule...

Question: 10.5.3

Calculate pressure using the ideal gas law and the van der Waals equation. A 1.78-mol sample of ammonia gas is maintained in a 2.50-L container at 302 K. Calculate the pressure of the gas using both the ideal gas law and the van der Waals equation (van der Waals constants are listed in Table 10.5.1 ...

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You are asked to calculate the pressure of a gas s...

Question: 5.4.3

Use constant-pressure calorimetry to determine enthalpy change. Ammonium chloride is very soluble in water. When 4.50 g NH4Cl is dissolved in 53.00 g of water, the temperature of the solution decreases from 20.40 ºC to 15.20 ºC. Calculate the enthalpy of dissolution of NH4Cl (in kJ/mol). Assume ...

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You are asked to calculate the enthalpy change for...

Question: 10.4.3

Use mole fraction in calculations involving gases. A gas mixture contains the noble gases Ne, Ar, and Kr. The total pressure of the mixture is 2.46 atm, and the partial pressure of Ar is 1.44 atm. If a total of 18.0 mol of gas is present, what amount of Ar is present? ...

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You are asked to calculate the amount of gas prese...

Question: 10.4.4

Use gas laws in stoichiometry calculations. A sample of O2 with a pressure of 1.42 atm and a volume of 250. mL is allowed to react with excess SO2 at 129 ºC. 2 SO2(g) + O2(g) → 2 SO3(g) Calculate the pressure of the SO3 produced in the reaction if it is transferred to a 1.00-L flask and cooled to ...

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You are asked to calculate the pressure of a gas p...

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