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Ammonia is kept at 15 degrees Celsius in a 10.0 L flask with a pressure of 1.95 atm. What is the pressure in the flask if the temperature is increased to 25 degrees Celsius.
Compare the absorbances you obtained for the SPF 8 and SPF 15 preparations. If both preparations contain the same ingredients, how much must the concentration of UV-absorbing materials
A sample of helium gas initially at 37.0 °C, 785 torr and 2.00 L was heated to 58.0 °C while the volume expanded to 3.24 L. What is the final pressure in atm
The equilibrium vapor pressure of 2-butanol at 34.7°C is 75.0 mmHg. Calculate the equilibrium vapor pressure at 46.7°C, if ?H°vap = 49.7 kJ/mol.
15.0 grams of an unknown sugar was dissolved in water and the final volume of the solution was brought up to 1.00 L. The osmotic pressure of this solution was determined to be 2.44 atm at 25°C. Which of the sugars below was most likely the unknown..
calculate the work that a person of mass 65kg must do to climb betweencalculate the work that a person of mass 65kg
What mass of Mg(OH)2 will be formed, and what will be the concentration of the ions in the solution of after the reaction complete
An electrochemical cell was constructed from Sn/Sn2+ and Pb/Pb2+ with KNO3 as the salt bridge. The concentrations were Sn2+ =1.0M and Pb2+ = 0.1M.
An element X whose atomic weight is 22.7 is a mixture of two isotopes with atomic masses of 24.1 and 22.5, respectively. Calculate the relative abundance (mole percent) of each isotope in the mixture.
Construct a simulated 1H NMR spectrum, including proton integrations, for CH3CHCl2. Drag the appropriate splitting patterns to the approximate chemical shift positions; place the integration values in the small bins above the associated chemical s..
Compute the wt% Ag in ideal prousite (Ag3AsS3). What is the maximum quantity of silver (in try ounces) that can be extracted from a ton of ore containing 90 wt % quartz and quartz and 10 wt % ideal prousite ? 1 oz troy = 31.10323 g; 1 short ton = ..
Write a net ionic equation for the reaction that occurs when cobalt(II) carbonate (s) and excess hydrochloric acid (aq) are combined.
Cavendish prepared hydrogen in 1766 by rather quaint method of passing steam through a red hot gun barrel. H2O + Fe ---> Fe2O3 + H2 (unbalanced) What volume of H2 at a pressure of 820 torr and a temperature of 23C can be prepared by a reaction of ..
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