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1) Explain what is meant by the terms "isothermal expansion" and "adiabatic expansion". In each case derive an expression for the work done in expanding an ideal gas. Derive an expression for the change in temperature which occurs during adiabatic expansion.
2) Calculate the work done on a closed system containing 50 g of argon gas when it expands reversibly from a volume of 5 L to a volume of 10 L at a constant temperature of 298.15 K. Relative atomic mass of argon = 39.948
3) 5 L of argon gas at 100 kPa and 298.15 K expands reversibly and adiabatically to twice its initial volume. Calculate the final pressure, the work done and the change in temperature, given that Cp/CV = 1.67 for argon.
determined the limiting reactant and the theoretical yield (in g) of nitrogen that can be formed from 24.0 g N2O4 and 23.5 g N2H4 molar masses are as follows: n2o4 92.02 n2h4 32.05
The dipole moment μ of HBr (a polar covalent molecule) is 0.82 D (debye), and its percent ionic character is 12.1%. Estimate the bond length of the H-Br bond in picometers.
The m for this nuclide indicated an excited nuclear state that decays to the ground state by gamma emission.
A person ate 0.919 pound of cheese (an energy intake of 7350 kJ). Suppose that none of the energy was stored in his body. What mass (in grams) of water would he need to perspire in order to maintain his original temperature? (It takes 44.0 kJ to v..
Given that Kp for 2 SO2(g) + O2(g)-->/
When 2.00 g of hydrazine decomposed under constant-pressure conditions, 7.00 kJ of heat were transferred to the surroundings. What is delta H for the following reaction? 3 N2H4(l) --> 4 NH3(g) + N2(g)
Add electron dots and charges as necessary to show the reaction of potassium and bromine to form an ionic compound.
How many structures can be drawn from C4H10O and how can you differentiate the molecules in a labratory
Which of the following statements are true regarding the liquid-liquid extraction performed in the synthesis of phenacetin. Note that there may be more than one correct answer. Dichloromethane is the bottom layer because it is more dense than water..
The concentration of Mg2+ in seawater is 0.052 M. What hydroxide concentration is needed to remove 90% of the Mg2+ by precipitation
25.0 mL of ethanol (density = 0.789 g/mL) initially at 7.4°C is mixed with 32.1 mL of water (density = 1.0 g/mL) initially at 25.3°C in an insulated beaker. Assuming that no heat is lost, what is the final temperature of the mixture?
Polyethylene Density, (a) Which is the higher density of polyethylene, linear or branched? Select the choice with the best accompanying explanation.
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