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At a particular temperature the equilibrium constant for the reaction: H2(g) + F2(g) ? 2HF(g) is K = 64.0. A reaction mixture in a 10.00-L flask contains 0.27 moles each of hydrogen and fluorine gases plus 0.45 moles of HF. What will be the concentration of H2 when this mixture reaches equilibrium?
Common oxidation states of mercury are 1 and 2. In the 1 oxidation state, mercury forms a diatomic cation. In the 2 oxidation state, mercury is a typical monatomic cation.
Consider a rigid, adiabatic, impermeable cylinder (i.e., a closed isolated system) that consists of two chambers (i.e., simple systems) that are separated by a wall that is permeable
A rigid plastic container holds 1.00 L methane gas at 630 torr pressure when the temperature is 20.3°C. How much more pressure will the gas exert if the temperature is raised to 44.3°C?
A balloon has a volume of 10,500 liters, and the temperature is 15°C. If the temperature were -25°C, what would the volume of the balloon be?
Assuming that the specific heat of water is 4.18 J/(g ? °C), and that the heat absorption by the calorimeter is negligible, estimate the enthalpy of combustion per mole of anthracene
A chemical reaction at equilibrium is heated, briefly, by holding it over a flame. The equilibrium is seen to shift toward the products. What can be said about the enthalpy and entropy of the reaction
What is the mole fraction of butanol (MM = 74.12 g/mol, D = 0.810 g/mL) when 32.94 mL of butanol is mixed with 20.43 mL of ethanol
the partial pressure of o2 in air at sea level is 0.21 atm. using henrys law calculate the molar concentration of o2 in
Draw a Kekule diagram for benzene - why is this representation of benzene not considered to be as good as drawing a hexagon with a circle in the centre? What does the circle represent?
5.0g of 23-dimethyl-13-butadiene is refluxed with 5.0g of maleic anhydride in toluene and 1g of product is
Calculate the pH of a solution prepared by diluting 2.5 mL of 1M acetic acid up to a final volume of 100 mL (pka 4.76)
A manufacturer claims that their new candy bar contains fewer than 40 Calories per serving. As a technician in an independent laboratory, you use a bomb calorimeter with a specific heat capacity of 7.35J/gC.
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