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An "ice calorimeter" can be used to determine the specific heat capacity of a metal. Suppose you heat a 50.0 g piece of silver to 99.8 deg C and then drop it onto ice. Once the metal's temp has dropped to 0 degrees C it is found that 3.54 g of ice has melted. What is the specific heat capacity of silver?
A 0.130-mole quantity of NiCl2 is added to a liter of 1.20 M NH3 solution. What is the concentration of Ni2 ions at equilibrium. Assume the formation constant* of Ni(NH3)62 is 5.5 × 108.
What biochemical changes are required to convert tyrosine to (a) norepinephrine and (b) epinephrine? and 3- Some bacterial signaling systems involve kinases that transfer a phosphoryl group to a His side chain. Draw the phospho-His side chain.
consider a solution of alno33 in water. awhat ion pairs would be expected to form? write thier formulas b would the
When a bulkheterojunction organic solar cell was irradiated with monochromatic light of 8 mW/cm2, it showed the short circuit photocurrent of 3 mA/cm2. Find at which wavelength (nm) the monochromatic light was irradiated. The external quantum effi..
A brick consisting of pure metal measures 4.00 inches x 5.00 inches x 3.00 inches and weighs 7.020 kg. Using density, identify the metal in the brick.
1.5 mol of oxygen are mixed with an unknown amount of nitrogen in a 2.0L container at a temperature of 26.0 degrees C. If the final pressure of the mixture is 4.3atm, what is the number of moles of nitrogen in the container.
If 153 mL of wet H2 is collected over water at 24°C and a barometric pressure of 729 torr, how many grams of Zn have been consumed?(The vapor pressure of water is 22.38 torr at 24°C.)
Calculate the Triangle H degree f for calcium cyanamide.
the anharmonicity constant is 117.90 cm^-1. Calculate the frequency at which the Q branch for the first overtone will be found.?
54g of a certain metal at 98 degree Celsius was placed into 80ml of water at 297K. Assuming no heat is lost to the surrounding, what is the temperature of the water and the metal
What is the final pressure in atm of a 3.05 L system initially at 724 mm Hg and 298 K, that is compressed to a final volume of 2.51 L at 273 K?
How much heat is required to warm 221 g of ice from -44.9°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C?
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