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A gas with an initial volume of 24.0 L at a pressure of 565 mmHg is compressed by a pressure increase of 0.25 Pa. What is the final volume (L) of the gas, assuming the temperature does not change?
Calculate the activation energy of this reaction in kJ/mol At what temperature would the half-life be 12.0 min?
The liberated hydrogen occupied a volume of 320ml when collected over water at 25 degrees celcius and the pressure of the gas was equalized to the atmospheric pressure of 750mm as in this lab. Calculate the equivalent weight of the metal, M.
Lewis Structure for a Nitrate Ion (NO3-1). How many possible resonance structures are there for the nitrate ion
The imaginary nonmetal E has two isotopes 50E(isotopic mass 49.9715 u abundance 76.66%) 52E (isotopic mass 51.9663 u) Calculate the atomic mass of E as it would appear in the periodic table.
19.40 Calculate the pH during the titration of 30.00 mL of 0.1000 M KOH w/ 0.1000M HBr solution after the following additions of acid : (a) 0 mL (b) 15.00 ml (f) 30.10 mL (g) 40.00ml
How many grams of calcium chloride are needed to create a heat pack that will reach +30 degrees Celsius above room temp. using 500mL of water
Use the atomic radius (70 pm) and density of neon at 25 °C and 1 atm (0.90 g/mL) to calculate the average density of a neon atom.
The rate of an enzyme-catalyzed reaction usually increases with temperature, but then decreases after reaching the "optimal temperature."
Metal X was plated from a solution containing cations of X. The passage of 48.25 C deposited 31 mg of X on the cathode. What is the mass of X (in grams) per mole of electrons.
a new element setonium has been isolated and consistent with some predictions is nonradioactive. while only nanogram
What is the pH of a buffer prepared by dissolving 0.238 g of NaNO2 in 2.50 L of 1.5 x 10-3 M HNO2, Ka (HNO2) = 6.0 x 10-4?
Ammonium carbamate (NH2COONH4) is found in the blood and urine of mammals. At a temperature of 466 K, Kc = 0.080 for the following equilibrium: NH2COONH4(s) 2 NH3(g) + CO2(g). If 10.2 g of ammonium carbamate is introduced into a 0.500 L containe..
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