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A 0.3 kg block of aluminum at 200 °C is placed in an insulated container with 1.0 kg of ice at 0 °C. The final state is the block, ice, and water all at 0 °C. How much of the ice melted? The specific heat of aluminum is 0.22 kcal/kg °C and the heat of fusion of ice is 79.7 kcal/kg.
If the 3.90 m solution from Part A boils at 103.45 ^\circ {\rm C}, what is the actual value of the van't Hoff factor, i. The boiling point of pure water is 100.00 ^\circ {\rm C} and K_b is equal to 0.512 ^\circ {\rm C}/m
The rate constants of some reactions double with every 10 degree rise in temperature.Assume that the reaction takes place at 345K and 355K.what must the activation energy be for the rate constant to double as described
Consider these aqueous solutions: 0.20m NH4Cl, 0.20m CaCl2, 0.25m NaCl, and 0.30m sugar. Assume these are all ideal solutions. Which solution has the lowest vapor pressure
the vapor pressure of pure water at 70degc is 235 mm hg. what is the vapor pressure depression of a solution of 125 g
Ka for HCN is 4.9 × 10-10. What is the pH of a 0.068 M aqueous solution of sodium cyanide
Ethanol can be prepared from the fermentation of crops and has been used as a fuel additive to gasoline. Explain what is the balanced equation
What is the pH of the buffer after the addition of 0.04 mol of NaOH? (assume no volume change) pH
What is the rate of the above reaction? What is the closest numerical value of K for the above reaction? What are the units for the rate constant for the reaction?
Based on their reduction potentials, what are the most likely cathode products in the electrolysis of an aqueous solution containing 1M LiCl, 1M FeCl2 and 1M CoCl2
The heat of combustion of ethane C2H6 is 1560 kJ/mol. What is the heat of combustion of ethane in kJ per gram
The following molecular equation represents the reaction that occurs when aqueous solutions of lead(II) nitrate and barium iodide are combined. Pb(NO3)2(aq) + BaI2(aq) PbI2(s) + Ba(NO3)2(aq)
At a certain temperature the following reactions have the constants shown- Calculate the equilibrium constant Keq for the following reaction at that temperature- 2SO2 (g) + O2 (g) 2SO3 (g)
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