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What is the entropy change for the reaction 2H2(g) + O2(g) 2H2O(l) at 372.2 K and 1.0atm? the enthalpy of reaction at 298.2K and 1.0atm is -572 KJ. The Cp values for H2, O2 and H2O are respectively, 28.8, 29.4, and 75.3 J K mol. (assum that they are constant over this temperature range)
If 3 moles of NaCl are needed to produce 1 mole of AlCl3, how many grams of NaCl are needed to produce 200 grams of AlCl3? Show all of your work/calculations.
969 ml of gas was collected at 64 degrees celcius and a pressure of 723 mm Hg. Find the volume at STP.
Calculate the number of oxygen molecules per liter of air if the temperature and pressure were 25°C and 1.00 atm, respectively.
If 860 liters of neon at 45°C and 800 mm. are decreased to 700 liters at the same pressure, what is the new temperature of this gas?
redox reaction NO2- is oxidized to NO3 and Ag is reduced to Ag. Complete and balance the equation for this reaction in basic solution
Cobalt-60, which undergoes beta decay, has a half life of 5.26 years.
The vapor pressure of water at 26 degrees C is 25.209 mmHg. How many moles of gas were collected?
Method for Trapping a Gas, The decomposition of 3-sulfolene to form 1,3-butadiene generates 1 mole of sulfur dioxide gas per mole of 1,3-butadiene. Substantial quantities of SO2 would be generated if this decomposition were carried out on a large ..
The principle quantum number defines the shell (which is roughly, but not quite exactly, the row, or period, of the periodic table). Demonstrate the difference between the rows of the periodic table
How many moles of Na and Cl2 are needed to make 7.3 moles of NaCl? Use the balanced equation 2Na + Cl2 --> 2NaCl
A protein has been eluted from a DEAE-cellulose column by washing with a salt-containing solution. Before the protein is subjected to a quantification assay,
The activation energy for the reaction NO 2 (g)+CO 2 (g)?NO(g)+CO(g) is E a = 100kJ/mol and the change in enthalpy for the reaction is ΔH = -200kJ/mol. What is the activation energy for the reverse reaction?
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