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A 21.60 g piece of iron and a 20.10 g piece of gold at 100.0 degrees celsius were dropped into 910.0 mL of water at 28.85 degrees celsius. The molar heat capacities of iron and gold are 25.19 J/(mol x degrees celsius) and 25.41 J/(mol x degrees celsius), respectively. What is the final temperature of the water and pieces of metal?
Equal volumes of the two solutions are mixed. Assuming the reaction is first order in each reactant, what is the initial rate at 32 degrees C?
Phosphorus pentachloride decomposes to phosphorus trichloride at high temperatures according to the reaction:
At 25°C the heat of fusion of aluminum is 10.6 kJ/mol and the heat of sublimation is 326.4 kJ/mol. What is the heat of vaporization of aluminum at 25°C?
What is the free energy change, ?G°, for the equilibrium between hydrogen iodide, hydrogen, and iodine at 453°C? Kc = 0.020
Which molecule has the largest mass?A sample of carbon consists of the isotopes carbon-12 and carbon-13.A sample of oxygen consists of the isotopes oxygen-16 and oxygen-17.Write the formula of all the different carbon dioxide molecules that can be..
write the rate law for each elementary reaction in the mechanism. D) if the first step is slow and the second one is fast, what rate law do you expect to be observed for the overall reaction.
the structures of the ions Ni2+ (aq) and Fe3+ (aq) as they exist in aqueous solution in octahedral shape.
how many grams of silver nitrate are present when 8.50 g of silver are in a sample?
A lead fishing weight with a mass of 68 g absorbs 146 cal of heat. If its initial temperature is 56°C, what is its final temperature.
What molarity of aqueous aluminum sulfate solution can be expected to show the same conductivity as 0.030 M Na2SO4 at 36,000 units?
The water level in a graduated cylinder initially at 223 mL rises to 282 mL after a piece of lead is submerged. What is the mass in grams of the lead?
Assume that the heat required for the vaporization of the alcohol comes only from the aluminum block and that the alcohol vaporizes at 25. Suppose that 1.15 of rubbing alcohol evaporates from a 65.0 aluminum block.
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