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Assume that the activation energy was measured for both the forward (Ea,f = 131 kJ/molrxn) and reverse (Ea,r = 175 kJ/molrxn) directions of a reversible reaction. What would be the activation energy for the reverse reaction in the presence of a catalyst that decreased the activation energy for the forward reaction to 107 kJ/molrxn?
a. A 0.1044 gram sample of an unknown monoprotic acid required 22.10 mL of 0.0500 M NaOH to reach the end point. What is the molar mass of the unknown?
When the valve between the 2.00-L bulb, in which the gas pressure is 2.00 atm, and the 3.00-L bulb, in which the gas pressure is 4.50 atm, is opened, what will be the final pressure in the two bulbs?
Calculate the mass of Cu(NO3)2·3H2O needed to prepare 50.0mL of a 0.50 M Cu(II) solution?
The energy for the process (H)+(energy) yields (H+)-(e-) is called the ionization energy of hydrogen. The experimentally determined value for the ionization energy of hydrogen is 1310 kJ/mol. How does this compare to your calculation
If 9.57 moles of an ideal gas has a pressure of 2.81 atm, and a volume of 25.49 L, what is the temperature of the sample in degrees of Celsius
Calculate the binding energy per nucleon for 21H and 31H. The atomic masses are 21H, 2.01410 amu, and 31H, 3.01605 amu.
a 720-mL sample of water was cooled from 60 degrees celsius to 10 degrees celsius. How much heat was lost?
A certain shade of blue has a frequency of 7.12 × 1014 Hz. What is the energy of exactly one photon of this light
Based on the 4 attached spectra, propose a structure for the unknown organic compound. Please explain each spectrum (IR, H NMR, C NMR, & Mass Spec)
When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 14.4 g of carbon were burned in the presence of 50.6 g of oxygen, 12.2 g of oxygen remained unreacted. What mass of carbon dioxide was produced
Sometimes the structure of phosphoric acid is written with single bonds to both the OH groups and to the oxygen atom; other times the bond between the P and the O is shown as a double bond. The "truth" probably lies somewhere between. Explain
How many moles of carbon, hydrogen and oxygen atoms does a mass of 32.5grams of sugar represent? How many atoms of each type are there in this mass of sugar?
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