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What is the Pauli Exclusion Principle? Describe this in terms of quantum numbers. Choose a particular atom and give a specific example.
Lithium iodide has a lattice energy of and a heat of hydration of. Determine how much heat is evolved or absorbed when 40.0 of lithium iodide completely dissolves in water.
A particular smoke detector contains 2.85 uCI of 241Am , with a half-life of 458 . The isotope is encased in a thin aluminum container. Calculate the mass of 241Am in grams in the detector. Fears of radiation exposure from normal use of such detec..
what is the redox number for nitrogen in a molecule of nitrogen dioxide and iron
The IR spectrum of 1- hexyne shows a sharp absorption peak near 2100 cm-1 owing to the CC triple bond stretch. The IR spectrum of 3- hexyne shows no absorption in this region because
The binding energy of electrons to copper metal is 389.3 kJ/mol. What is the longest wavelength of light that will eject electrons from copper metal? Enter units.
what is the temperature of a gas if 5.0 moles of the gas occupy a 10 liter container at a pressure of 2.5 atm?
What is the molecular formula of the molecule that had an empiricial formula of C2 H4 S and a molar mass of 180.35% g/molecular.
Use the Henderson-Hasselbalch equation to calculate the pH of a solution that is 0.165 M in propanoic acid and 0.125 m in potassium propanoate.
Use the three-step method described in the module to predict the actual precipitates which form (if such is the case) when the following solutions are mixed
Find the standard enthalpy of formation of ethylene, C2H4(g), given the following data: heat of combustion of C2H4(g) = -1411 kJ/mol; ?H°f[CO2(g)] = -393.5 kJ/mol; ?H°f[H2O(l)] = -285.8 kJ/mol.
In a combustion experiment, .73g of an unknown hydrocarbon was burned in the presence of excess oxygen. This reaction produced .452 g CO2 and .087 g H2O. How many moles of carbon were in the original hydrocarbon sample
Question- Elemental iron is produced in what is called the thermite reaction because it produces enough heat that the iron is initially in the molten state. The liquid iron can be used to weld iron bars together
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