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What is the Electron Configuration for Os4+? And how did you know which orbital lost its electron first?
When 2.00 g of hydrazine decomposed under constant-pressure conditions, 7.00 kJ of heat were transferred to the surroundings. What is delta H for the following reaction? 3 N2H4(l) --> 4 NH3(g) + N2(g)
Using the Boltzmann distribution, calculate the ratio of electrons at the bottom of the conduction band to those at the top of the valence band for pure Si at 300.K. The Si band gap is 1.1 eV. The answer to this question has to equal 3.35 x 10-18.
How do you predict the formulas for ionic compounds using the electron dot structures?
Draw the organic product of the following reaction. Butyric acid with SO2Cl and heat as catalysts
A voltaic cell consists of an Mn/Mn2+ half cell and a Pb/Pb2+ half cell. Calculate [Pb2+] when [Mn2+] is 2.1 M and Ecell= 0.27 V
A gas mixture contains helium and oxygen at partial pressures of 255 torr and 0.450 atm.What is the total pressure in mmHg of the mixture after it is placed in a container one-half the volume of the original container? (Temperature remains constan..
A solid sample containing some Fe 2+ ion weighs 1.062g. It requires 24.12 mL 0.01562 M KMno4 to titrate the Fe2+ in the dissolved sample to a pink end point.
Calculate the volume of ammonia required to bring the pH to 3.00 and to 8.00. Kb (NH3) = 1.8 x 10^-5.
for the solvents below with their value for kb in parenthesis. if a solute is added to each of the solvents to a 1.0 m
The tank is first evacuated, and then it is connected to a 50.0 L cylinder of compressed nitrogen gas. The gas pressure in the cylinder, originally at 21.5 atm, falls to 1.55 atm without a change in temperature. What is the volume of the tank?
What is the change in internal energy (in J) of a system that releases 675 J of thermal energy to its surroundings and has 5.60 * 10^2 cal of work done on it?
A sample of neon is collected at 2.7 atm and 12.0 C. it has a volume of 2.25L.What would be the volume of this gas at STP?
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