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At 46°C a sample of ammonia gas exerts a pressure of 5.3 atm. Explain what is the pressure when the volume of the gas is decrease to one-fifth (0.2) of the original value at the same temperature?
At 373 K, kp=0.416 for the equilibruim 2NOBR->2NO+Br2. if the pressures of NOBr and NO are equal, what is the equilibruim pressure of Br2
What is the contribution to the internal energy from translations for an ideal monatomic gas confined to move on a surface?
for a helium aton in a one-dimensional box calculate the value of the quantum number of energy level for which the energy is equal to 3/2kt at 25 degrees c for a 1nm long box
How many moles of gas are there in a 45.0 L container at 25.0 degrees Celcius and 500.0 mm Hg
Reaction 1 uses 0.260 of reactant, and Reaction 2 uses 0.590 of reactant. How many times faster is Reaction 2 compared to Reaction 1.
Dissolving 3.00 g of an impure sample of CaCO3 in an excess of HCl acid produced .656 L of CO2 (measured at 20 degrees C and 792 mmHg). calculate the percent by mass of calcium carbonate in the sample. State any assumptions.
If you have 4.63 g of caffeine dissolved in 69.9 mL of water and the extraction coefficient between H2O and CH2Cl2 is 21.51. How many grams of caffeine will extract into the CH22Cl2 layer if you use 62.9 mL
a 27 gram sample of an unknown hydrocarbon was burned in excess oxygen to form 88 g of co2 and 27 g of h20?what is a
Calculate the work, w, and energy change, ?Urxn, when 20.51 g of Cu2O(s) is oxidized at a constant pressure of 1.00 bar and a constant temperature of 25°C.
Calculate the specific heat of a metallic element if 314 joules of heat energy are needed to raise the temperature of a 50.0 gram sample from 25 degrees celsius to 50 degrees celsius.
A chemical reaction has k=9.3*10^-5 1/M sec at 200 degrees C, if the activation energy Ea=99 kJ/mol, what is the value of k at 130 degrees C
The mercury in the arm attached to the gas is 15.8 cm higher than in the one open to the atmosphere atmospheric pressure is 0.971 atm Express answer in three significant figures
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