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A 10.00 ml sample of an unknown aqueous nickel (II) solution was treated and found to produce 0.0532 g of Ni(DMG)2(Molar mass=288.9155g/mol) precipitate. Calculate the percent Nickel in the ore sample.
A sample of Nitrogen gas occupies 1.55L at 27.0 degrees C and 1.00 atm. What will the volume be at -100.0 degrees C and the same pressure?
The empirical formula for the hydride of sulfur is H2S, and its central atom is sulfur. Based on this information, you would expect the empirical formula for the hydride of selenium
Write out a wave function for a one dimensional free particle with constant probability of finding the particle at amynpoint in one dimension
the effect of epinephrine binding to B-receptors is well known. epinephrine also binds to alpha-receptors. which of the following would NOT result following the binding of epinephrine to alpha-receptors in the liver
First, plot the potential energy as a function of the electron's distance from the nucleus, i.e.,V(r) . (Be sure to remember the sign of this potential.)
Write the VSEPR Aformula for the N atom as the central atom in glycine. What is the approximate C-N-H bond angle. Explain on the basis of VSEPR theory. What is the approximate O-C-O bond angle. Explain on the basis of VSEPR theory.
In order to raise the temperature of 266 g of methane gas from 25.0 C to 40.0 C, how much heat energy in kilojoules is required given that the specific heat of methane gas is 2.20 J/(g*C)
calculate the mass percent of a solution in which 176 of is dissolved in 3.08 of water at 25 density 0.997
Please give reasons for compounds like silver sulfate or silver chloride to be insoluble that relate to ionic radius.
 What is the pH of the acidic solution before titration? 4.  What is the pH of the reaction mixture after 10.0 mL of NaOH was added?
Calculate the wavelength (in nanometers) of a photon emitted by a hydrogen atom when its electron drops from the n = 5 state to the n = 3 state
at 986°C is 0.63. A rigid cylinder at that temperature contains 1.2 atm of carbon monoxide, 0.20 atm of water vapor, 0.30 atm of carbon dioxide, and 0.27 atm of hydrogen. Is the system at equilibrium?
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