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Which change to this reaction system would cause the equilibrium to shift to the right?
A researcher collects .00603 mol of an unknown gas by water displacement at a temperature of 28.8 deg.C and a 0.940 atm pressure (after the partial pressure of water vapor has been subtracted). Wha
In a separate experiment, all the sulphur in another 0.464 g sample was converted to 0.859 g of BaSO4. What is the empirical formula of the unknown compound?
A student placed 10g of Mg(OH)2 into a flask and added 500 ml of water. The student then took 100 ml of the Mg(OH)2 solution and reacted with HCl(aq). If 13.75 ml of .010M HCL reacted with the OH-(a
Calculate the number of moles of calcium nitrate in this solution. Calculate the number of molecules of calcium nitrate in this solution. Calculate the total number of ions from the calcium nitrate i
Which one of the following would furnish the highest yield of a methyl ether on reaction with naoch3 under conditions of williamson synthesis?
How much glucose, C6H12O6, would you need to start with to prepare 4.6 x 104kg of ethyl alcohol if the yield in the reaction is 64.5%?
A sample of pure NOBr at a concentration of 0.200 M is allowed to decompose at 50 degrees C. When the reaction has come to equilibrium, the concentration of NOBr is 0.176 M. What is the value of Kc
Predict whether or not a precipitate will form upon mixing 175.0 mL of a 0.0055 M KCl solution with 145.0 mL of a 0.0015 M AgNO3 solution. Identify the precipitate, if any.
In an experiment, 25.0 mL of a gas with a pressure of 1.00 atm is contained in a balloon at 25.0 oC. The balloon is then cooled to 5.0 oC, and the pressure is found to be 0.750 atm. What is the volume
A student dissolves some ammonium nitrate (NH4NO3) in water notices that the beaker gets cooler as the solid disssolves. This is an example of ______
A 3.46 g sample of zinc heated to 95.4 C was dropped into 50 g of water at 20.7 C in a calorimeter. The temperature rose to 21.2 C. What is the specific heat of zinc?
An 11.2 liter flask at 0 degrees C contains one mole of oxygen, two moles of nitrogen and three moles of helium. What is the pressure in the flask?
A 1.00 L sample of gas, initially at 273 degrees C and 2.00 atm was cooled to 0 degrees C and the pressure changed to 0.20 atm. What is the final volume of the gas in liters?
Question: A gas at 30 degrees C and 600 mmHg occupies a volume of 412 cm^3. What is the volume in cm^3 that the gas will occupy if the temperature is lowered to -30 degrees C at the same pressure?
If 100 g of Mg reacts with excess HCl, what volume of hydrogen gas at 25 degrees C and 1.0 atm pressure will be produced?
What is the molecular weight of a volatile liquid, if .50 g of the liquid fills a 100 mL flask as a gas at 25 degrees C and 1.0 atm pressure ?
When a 2.00-g sample of KSCN is dissolved in water in a calorimeter that has a total heat capacity of 1.717 kJ/K, the temperature decreases by 0.290 K. Calculate the molar heat of solution of KSCN.
Spaceman speff orbits planet x with his spaceship. To remain in orbit at 556 km from the planets center, he should maintain a speed of 85 m/s. What is the mass of planet x?
A solid, uniform sphere of mass 2.0 kg and radius 1.7m rolls without slipping down an inclined plane of height 6.7 m. what is the angular velocity of the sphere at the bottom of the inclined plane?
A square loop, with sides of length L = 40.7 cm, carries current i = 4.49 A. Find the magnitude of the magnetic field from the loop at the center of the loop.
A square loop of wire with a side length of 29.9 cm carries a current of 0.401 A. What is the magnetic field in the center of the square loop?
What are the advantages of working with microscale equipment as opposed to larger equipment in a Williamson ether synthesis of phenacetin experiment.
This and the next question pertain to the following situation. A quantity of molecular hydrogen (H2) gas fills a one liter container at a temperature of 200 K and pressure of 1 atm.