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How many moles of oxygen are required for the complete combustion of 4.0 moles of decane to give CO2 and H2O
10.0 mL of a 0.30 M sodium phosphate solution reacts with 20.0 mL of a 0.20 M lead(II) nitrate solution (assume no volume change). What is the concentration of nitrate ions left in solution after the reaction is complete
The thermogram for the reaction is depicted below. The calorimeter constant is 28.1 J/ Celcius. Both solutions were initially at 21.31 Celcius. Calculate Delta Hrxn for the reaction.
The activation energy for the denaturation of a protein is 391.0 kJ/mole. At what temperature will the rate of denaturation be 19 percent greater than its rate at 25.00 degrees Celsius?
The quality of a two-phase liquid-vapor mixture of H2O at 40Oc with a specific volume of 10m3/Kg is
Think about the reaction of (a) chlorine with sodium hydroxide and the reaction of (b) acetone with hypochlorite ion. Classify Each reaction as either:
An organofluorine compound has a density of 0.773 g/L at 18.5 C and 223 mm Hg pressure. calculate the molar mass of the compound
An oxygen tank contains oxygen at a pressure of 70 kPa. When the pressure drops to 36 kPa, the temperature increases from 300 K to 350 K. If the initial volume is 9 L, what is the final volume?
Why is mercury being replaced by other liquids such as colored alcohol as the temperature-sensing fluid
The specific 14C activity of a sample of charcoal is determined to be 12.47 dpm g-1of carbon. What is the age of the sample if the initial activity of 14C in this sample was 13.56 dpm g-1of carbon?
How much HCl gas can be produced at STP by reacting 198 g of NaCl with excess H2SO4?NaCl + H2SO4 ! NaHSO4 + HCl.
Consider the following electrochemical cell at 298 K. One compartment contains a 1.00-M solution of silver nitrate. The other compartment contains a saturated solution of silver iodide
To resolve an object in an electron microscope the wavelength of the electrons must be close to the diameter of the object. What kinetic energy must the electrons have in order to resolve a protein molecule that is 2.60 nm in diameter
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