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A H atom emitts a photon with a wavelength of 4.34 × 102 nm. If the energy of the initial state of the H atom was -8.72 × 10(-20) J, calculate the energy of the final state. Express answer in scientific notation.
A sample of S8(g) is placed in an otherwise empty rigid container at 1325 K at an initial pressure of 1.00 atm, where it decomposes to S2(g) by the reaction S8(g) 4S2(g) At equilibrium, the partial pressure of S8 is 0.25 atm. Calculate Kp for th..
what is the enthalpy of vaporization of acetone ch3coch3 at its normal boiling point of 56.2?c? the entropy of
All the following are postulates of the kinetic molecular theory of gases except A) the collisions between molecules are elastic. B) the gas molecules move randomly in straight lines in all directions.
a gas made up of atoms escapes through a pinhole 0.552 times as fast as ar gas. write the chemical formula of the
The final temperature of the calorimeter is 150°F. What is the mass of titanium used? The specific heat capacity of water is 4.184 J g-1 °C-1.
For a second-order rxn: 2A ? B Given: [Ao] = 0.650 M and at 45 seconds [A] = 0.1.15 M. What would be the rxn rate when [A] = 0.297 M
Calcium hydride (CaH_2) reacts with water to form hydrogen gas. How many grams of CaH_2 are needed to generate 55.0 L of H_2 gas at a pressure of 0.995 atm and a temperature of 32 degrees Celsius
Calculate the mass of formed from the unbalanced reaction? A solution is prepared by mixing 100.0 mL of 0.45 M NaCl, 100 mL of 0.082M, and enough to bring the total volume to 400.0 mL
How much heat is required to warm 12.0 g of ice, initially at -11.0 C, to steam at 113.0 C?
Calculate the standard enthalpy of formation of carbon disulfide (CS2) from its elements, given the following data.
25.0 mL of a hydrofluoric acid solution of unknown concentration is titrated with 0.200 M NaOH. After 20.0 mL of the base solution has been added, the pH in the titration flask is 3.00. What was the concentration of the original hydrofluoric acid ..
Write the mass balance equation and charge balance equation for a solution that is 0.1 M FeCl3 and 0.2 M FeCl2
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