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The first step in the industrial recovery of zinc from zinc sulfide ore is roasting, that is, the conversion of ZnS toZnO by heating: calculate the heat of reaction (in kJ) if 15g SO2 was collected. Was heat absorbed or released? 2ZnS (s) + 3O2 (g) ----> 2ZnO (s) + 2SO2 (g)
Assume the density of the vinegar solution is 1.00 g/mL and 5.00% by mass acetic acid. Determine the volume of vinegar that can be neutralized with 25.0 mL of 0.100 M NaOH.
What mass of iron is needed in order to supply the energy needed to warm 15.0mL of water (d= 1.00 g/cm3) from 23C to 37C
a cylindrical glass tube 13.0 cm in length is filled with mercury. The mass of mercury needed to fill the tube is found to be 107.5g. Calculate the inner diameter of the tube in centimeters.
A 14.0 g sample of CaCl2 is dissolved in 121 g of water, with both substances at 25.0°C. Calculate the final temperature of the solution assuming no heat lost to the surroundings and assuming the solution has a specific heat capacity of 4.18 J/°C·..
Design a reaction scheme to synthesize pentylbenzene from benzene using a Friedel-Crafts acylation and any other reaction
Determine what would be its temperature after absorption of 9.4 * 10-2 kWh of heat If 1.45 L of water is initially at 25.0 °C,?
In Europe, gasoline efficiency is measured in km/L. If your car's gas mileage is 23.0 mi/gal, how many liters of gasoline would you need to buy to complete a 142-km trip in Europe?
Compute the work done when 55.0 grams of tin mixes in excess acid at the pressure of 1.00 atm and at a temperature of 24°C.
Benzyl ethyl ether reacts with concentrated aqueous HI to form two initial organic products (A and B).
Calculate the theoretical yield of C2H5Cl when 138 g of C2H6 reacts with 218 g of Cl2, assuming that C2H6 and Cl2 react only to form C2H5CL and HCl.
A rigid tank contains 1.50 moles of an ideal gas. Determine the number of moles of gas that nust be withdrawn from the tank to lower the pressure of gas from 25atm to 35 atm.
Assume that the kinetic energy of a 1300 kg car moving at 105 km/h could be converted entirely into heat. What amount of water could be heated from 20.°C to 64°C by the car's energy?
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