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In a graph(Energy (kj/mol)) the first five ionization energies of an atom are IE1, IE2, IE3, IE4, and IE5. what is the element symbol and its complete electron configuration for
1. Period 2
2. period 3
3. period 4
How many moles of aluminum atoms, Al, are needed to combine with 0.133 mol of O atoms to make aluminum oxide, Al2O3?
Pick and element or compound and state how many grams of that substance are needed to have a mole of that substance.
Determine the molarity of a saturated NaI Sodium iodide solution (aqueous) formed as twenty five degree Celsius
Write a balanced chemical equation for this reaction. Express your answer as a chemical equation. Identify all of the phases in your answer.
the heat capacity of the calorimeter has been determined to be 24.0J/degreeC. if the temperature of the system increases by 6.0C what is the heat generated(qrxn) by the reaction?
A 1 g sample of C8H16O is burned completely in excess oxygen to yield CO2(g) and H2O(l) at 25 C, releasing 39.28 kJ of energy. What is the enthalpy of formation of C8H16O?
Find the energy eigenstates for the system. Compute the normalization constant for these eigenstates. What is the boundary condition for this problem. What does this restrict the allowed energies of the system to be? e) What is the degeneracy of t..
Find the mass of sodium required to produce 5.68 L ofo hydrogen gas at STP from the reaction described by the following equation: 2Na+2H2O-->2NaOH+H2
How many possible trisubstituted derivatives C6H3X2Y can be obtained from the para disubstituted benzene C6H4X2?
How many grams of calcium carbonate are needed to produce 374mL of carbon dioxide gas at STP in the following reaction?
A piece of metal with a mass of 18.2 grams was dropped into a graduated cylinder containing 16.50mL of water. The graduated cylinder after the addition of the metal is 18.40. Determine the density of the metal.
The vapor pressure of the pure liquids at 25°C are 451 torr for pentane and 321 torr for cyclopentane. Assume that the solution is an ideal solution.
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