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Three moles of an ideal gas with temperature independent cp=(7/2)r, cv=(5/2)r is contained in a horizontal piston/cylinder arrangement. If the piston has an area of 0.1 m2 as well as mass 500g. The initial pressure in the piston is 101 kpa. Find out the heat that must be extracted to cool the gas from 375C to 275C A) At constant pressure B) at constant volume
An ionic compound forms when calcium (Z = 20) reacts with iodine (Z = 53). If a sample of the compound contains 1.29x10^19 calcium ions, how many iodide ions does it contain
We add excess Na2CrO4 solution to 16.0 mL of a solution of silver nitrate (AgNO3) to form insoluble solid Ag2CrO4. When it has been dried and weighed, the mass of Ag2CrO4 is found to be 0.380 grams.
a sample of sucrose c12h22o11 weighing 0.1265 g is burned in a bomb calorimeter. after the reaction is over it is found
Above what Fe2 concentration will Fe(OH)2 precipitate from a buffer solution that has a pH of 9.39? The Ksp of Fe(OH)2 is 4.87×10-17
Calculate the mass of oxygen dissolved in a 5.00 L bucket of water exposed to a pressure of 1.13 atm of air. Assume the mole fraction of oxygen in air
HNO3 was required for complete reaction with 0.8784+or- 0.0008g of Na2CO3 (FM 105.988+or- 0.001). Find the molarity of the HNO3 and its absolute uncertainty
in lab an isomerization of dimethyl maleate in the presence of bromine to form dimethyl fumarate was conducted using a
molal solution of NaCl is prepared. How many grams of NaCl are present in a sample containing
Determine the precipitate that forms if silver nitrate aqueous solutions and KCl react to produce products in a double-replacement reaction.
The normal boiling point of water (delta H vap = 40.7 kJ/mol) is 100c. At the summit of mount Everest the boiling point of water is 70 c. Calculate the pressure in (torr) at the summit of Mount Ev.
radio waves travel at the speed 3.00 108 msspeed of light. if saturn is 7.9 108 km from earth thendetermine how many
Under identical conditions, it takes two moles of an unknown gas 47 seconds to effuse through the same porous membrane. Explain what is the molar mass of the unknown gas
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