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Why does the temperature of a solution increase if the reaction is exothermic? For example, in the precipitation of silver iodide, delta H is -110.7 kj. Why is this reaction exothermic and why does it cause the solution temperature to increase?
What is the mg antibiotic dose that must be administered to Sam. If the Sam antibiotic is available is liquid solution form of 65.0 mg antibiotic per mL, how many mL of this antibiotic solution must be administered to Sam? Report to tenths of mL.
The activation energy of an uncatalyzed reaction is 89 kJ/mol. The addition of a catalyst lowers the activation energy to 57 kJ/mol.
an ethanol-water mixture is to be flash distilled at 1 atm. if the feed is 25 mole % ethanol, what are the liquid and vapor compositions if
Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons. Show the formal charges of all atoms in the correct structure of ClO4-
determined for MgO to be the same as the one determined by another student
Using the following thermochemical equation, determine the amount of heat produced per kg of CO2 formed during the combustion of benzene (C6H6). 2 C6H6(l) + 15 O2(g) ? 12 CO2(g) + 6 H2O(g) ?H°rxn = -6278 kJ
The first 25 years of the twentieth century were momentous for the rapid pace of change in scientists' understanding of the nature of matter. How did Rutherford's experiments on the scattering of α particles by a gold foil set the stage for Bohr's..
Why is it easier to remove electron from the first two energy levels of mg but easier to remove third level electron of argon
Suppose 25.0 g of solid NaOH is added to 1.5 L of an aqueous solution that is already 2.4 M in NaOH. Then water is added until the final volume is 4.00 L. Determine the concentration of the NaOH in the resulting solution.
Why is it important to not dilute an initial sample before it hasbeen loaded
A proton in a magnetic field has two spin states, one aligned with the field B and the other anti aligned. the energies of these spin states are E down=hyB/2 and E up =-hyB/2, where y=26.8*10^7 (Tesla)^-1.
prepare a MO energy-level diagram for NO, showing clearly how the atomic orbitals interact to form MOs.
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