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1) Near room temperature, the specific heat capacity of benzene is 1.15 .
a) Calculate the heat required to raise the temperature of 1545 mL of benzene from 9 oC to 55 oC. The density of liquid benzene is 0.78 .
b) 25.0 g of benzene is placed in a bomb calorimeter and pressurized with excess oxygen gas. The bomb calorimeter is placed in an insulated container containing 1000 g of water at 298 K and the benzene is combusted. If the molar heat of combustion of benzene is 399.7 kJ/mol, and assuming the calorimeter absorbs negligible heat, determine the final temperature of the water after the system has reached thermal equilibrium.
2) A piece of metal of mass 34.72 g at 99.7 oC is placed in an insulated container that contains 64.27 grams of water at 22.0 oC. The final temperature of the water is 25.7 oC. What is the specific heat capacity of the metal?
3) Ice is a very important commodity in the VI, especially when trying to keep certain libations cold and frosty. How many kJ of energy is required to freeze 220 kg of water and then cool the ice to -25 oC. The enthalpy of fusion for ice is 6.007 kJ/mol, the heat capacity of water is 4.184 J/(g.K) and the heat capacity of ice is 2.11 J/(g.K).
What mass of solid PbCl2(278.10 g/mol) is formed when 200 mL of .125 M Pb2+
What is the buggering range of tris. what is the buffering capacity of .25M tris solution. 25mM tris solution. water
Complete the following acid-base reactions. Write the net ionic form. Determine if the solution made by mixing equal amounts (moles) of these acids and bases will be acidic, basic or neutral. Explain, show relevant equations
Compute the change in temperature when 1.8 g of sodium chloride is dissolved in 300.0 mL of water initially at 20C. The heat capacity of water is 4.184 J/mL/K.
A piece of sodium metal reacts completely with water as follows. 2 Na(s) + 2 H2O(l) 2 NaOH(aq) + H2(g) The hydrogen gas generated is collected over water
Using the Nernst quation calculate the following EMF of these cells at the non standard states Cu(II)-Zn(II) Fe(II)-Zn(II) Pb(II)-Zn(II) please show work. i dont understand especially calculating Q using the nernst equation.
The following arrangement of flasks is set up. Assuming no temperature change and no chemical reaction, determine the final pressure inside the system after all stopcocks are opened and equilibrium is reached. The connecting tube has no volume. 1s..
What is the value of the equilibrium constant at this temperature for the reaction of SO2 with N2O to form SO3 and N2 (balanced with lowest whole-number coefficients)?
Problem- Calculate the pH of a solution in which 20.0 mL of 0.100 M NaOH is added to 25.0 mL of 0.100 M CH3COOH (Ka = 1.7 x 10-8)
The fluorescence of the diluted sample solution was found, by the working curve method, to correspond to a salicylate ion concentration of 4.80 x 10^-5 M. Calculate the % acetylsalicylic acid in the aspirin tablet.
how much heat is required to change a 38.6 g ice cube from ice at -14.7 deg c to water at 65 deg c?alsohow much heat is
A 6.269 g sample of NiCl2·2H2O is heated until all the water of hydration is removed. What will be the mass of the remaining NiCl2?
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