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Question- A crystal was analyzed using X-ray diffraction with radiation from a molybdenum source. The observed angle was 11.91°. Determine the distance between layers of the crystal. d= pm?
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Balance the equation for this reaction of magnesium and hydrochloric acid using the smallest whole number coefficients
Calculate the amount of heat required to completely sublime 50.0g of dry ice (CO2) at its sublimation temperature. The heat of sublimation for carbon dioxide is 32.3kJ/mol.
calculate the amount of heat released when 50g of steam at 100 degrees celsius hits the skin condenses and cools to a
Compute the energy of a photon from an FM radio station at a frequency of 101.2 MHz. respond in 4 sig figs.
For the reaction CO(g) + H2O(g) CO2(g) + H2(g), Kp = 0.64 at 900 K. If the reaction is initiated with just H2(g) and CO2(g), each at a partial pressure of 0.540 atm, what is the partial pressure of CO(g) at equilibrium
Compute the pH of a solution prepared by dissolving 0.150 mol of benzoin acid (C6H5COOH) as well as 0.300 mol of sodium benzoate (C6H5COONa) in water sufficient to yield 0.100 L of solution. The Ka of benzoin acid is 6.30 x 10 -5
Mass is not technically the same thing as weight, but the abbreviation (w/v) is also common. How many grams of sucrose are needed to make 865 mL of a 36.0% (w/v) sucrose solution?
Dinitrogen monoxide gas decomposes to form nitrogen gas and oxygen gas. How many grams of oxygen are formed when 40.0 g of dinitrogen monoxide decomposes
Determine the ratio of volumes (cm^3/atom and cm^3/mol) to determine Avogadro"s number (atoms/mole).
A 100.0-g sample of water at 27.0oC is poured into a 75.0-g sample of water at 89.0oC. What will be the final temperature of the water?
which of the following species would be expected to have chemical properties most similar to those of the nitrogen
a variety of ions with na k nh4pb2 fe2 no3- cl- br- s2- and co32- are addednbsp in a beaker of h2o which substances
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