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1. You have a 134.0g sample of water at -30 oC and you heat it until you have gaseous water at 140 oC. Calculate the energy required for this process.
2. N2 and O2 make up the majority of the Earth's atmosphere with partial pressures of 0.78 and 0.21 atm, respectively. These two gases are extremely stable at normal atmospheric temperatures. Inside of a lightning bolt, however, temperatures are hot enough that these two species react to form NO. You can use the following assumptions: the temperature is 2200 oC inside the lightning bolt, the bolt lasts long enough for all three species to reach equilibrium at that temperature, and the pressure of NO is 0.001 atm at equilibrium. Calculate the standard free energy change ΔGo for these conditions. (Note- this calculation will have some error in it because the gases are not in their standard states but we are calculating standard free energy. The point here is to see how different chemistry topics interact with each other (e.g. equilibrium and free energy). It is also a chance for you to practice using the equations and learn how to solve more challenging problems)
Draw the radial probability distribution function of a 8f orbital. And may you please explain what a radial probability distribution is and how to draw one for any orbital? Thank you!
Use the systematic treatment of equilibrium to determine the pH and concentrations of species in 1.00 L of solution containing 0.070 mol lysine (HL), 0.055 mol aspartic acid (H2A), and 0.0080 mol NaOH. Consider just acid-base chemistry.
The equilibrium constant for a reaction is 0.48 at 25 o C. What is the value of ?G o at this temperature?
Why is it particularly important to wash the cupric hydroxide intermediate in the synthesis of cupric acetate (verdigris)? Be specific about what is being removed and why it matters.
The molar heat of vaporization at 298 K for diethyl ether(C4H10O) is 26.0 kj/mol. How much heat would be requiered to vaporize 0.714 g of ether at 289 K?
When 0.097 moles of Magnesium hydroxide (Mg(OH)2) is dissolved in water, how many moles of ions are released into the solution ?
Which of the following will react with Benedict's reagent?
Determine the amount of energy or work that the silicon nitride tip could absorb before being plastically deformed, assuming no initial cracks. Volume is in part A.
Sodium carbonate ( Na_2CO_3) is used to neutralize the sulfuric acid spill. How many kilograms of sodium carbonate must be added to neutralize 5.04×103 kg of sulfuric acid solution?
A chemist produces 460 mL of oxygen gas at - 43 °C and constant pressure. To what Celsius temperature must the oxygen be warmed in order for it to have a volume of 600 mL?
B2H6 + 3O2= B2O3+3H2O ;DELTA H=-2035KJ how much heat is released when a mixture of 7.35 g B2H6 and 2.60 g O2 is burned?
Formic acid has a Ka TEN times larger than that of acetic acid. In solutions with the same molarity, the formic acid solution will have this many times the [H+] of the acetic acid.
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