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Ionization energy is the energy needed to eject an electron from an atom or ion. calcluate the ionization energy, IE, of the one- electron ion B^4+
collected over water at 22 degrees C and the total pressure of the wet gas were 710 mm Hg, what would be the partial pressure of the oxygen?
How many electrons are present in an atom with its 1s, 2s, 2p, and 3s subshells filled and with 4 electrons in the 3p subshell? What is the element?
Arrange the following elements in order of increasing ionization energy, and explain how you know the order
Calculate the volume and mass required to make 0.1m solutions of your assigned acid (HNO3) and conjugate base
Ddetermines how many tablets should be given to her if there are five tablets in stock.
How much water would you have to drink to meet your daily fluoride requirement of 0.5 mg.day?
The 13C nucleus is a spin 1/2 particle, which means it can orient in two directions in a magnetic field (with the field and against it). The difference in energy between the two orientations is given by:
The silicon in the plate is a mixture of naturally occurring isotopes. One of the those isotopes is silicon-30, which has an atomic mass of 29.97376 amu and a percent natural abundance of 3.10%.
A 25.0 mL sample of river water was titrated with 0.0010 M Na2Cr2O7 and required 8.3 mL to reach the end-point. What is the chemical oxygen demand, in milligrams of O2 per liter, of the sample?
The original concentration of Glucose-6-phosphate is 0.25 M, but when the system reaches equilibrium, only 2.5% of the original glucose-6-phosphate remains. calculate the Keq.
Show the Chemical behavior of an atom - The chemical behavior of an atom is determined by most directly by the
when cyclopentane is exposed to Br2 in presence of light. Write the formulas of all possible dibromination products. Draw molecule by placing atoms on grid.
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