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Zinc metal can be obtained from zinc oxide (ZnO) by reacting the oxide with the element carbon. The products of the reaction are Zn and CO2. What mass of zinc oxide is needed to react completely with 2.22 mol of carbon? Answer in units of g
Calculate the molar solubility of iron sulfide in a solution that is saturated with hydrosulfuric acid, H2S ( [H2S] = 0.1 M) and has a pH of 2.0. Ka1 = 8.9 x 10^-8 and Ka2 = 1.2 x 10^-13.
why are elements such as Hg, As, Bi, Sb and others first converted to their hydrides prior to sample analysis by Atomic Absorption Spectroscopy?
What is the recommended daily allowance (RDA) of calcium, in mg, assuming a 2000 calorie diet for a 25 year old adult? A student carries out part 1 of this experiment and finds the equation for his/her calibration curve to be
Describe how to prepare 100 ml of 0.200 M acetate buffer, pH 5.00 starting with pure liquid acetic acid and solution contaning ~3 M HCl and ~3 M NaOH
Using the molecular orbital theory, which one of the following is paramagnetic?
Copper is highly sensitive to oxidation by molecular oxygen. Higher oxidation states of Cu do not catalyze diazocoupling reactions. Define oxidation (loss of electrons) and define a redox half reaction for the oxidation of CuI by O2
What is the specific heat capacity of silver? Using the specific heat capacity find the heat energy for 235 g Ag with a change in temperature of 32.1 degree C.
At volume of 0.200 M K2Cr2O7 will be required to oxidize the Fe2+ iron in 60.0 mL of .200 M FeSO4 solution?
what is E cell under final equilibrium conditions of: 0.52 M Cr2O72-; 2.25 M HCl; and 0.56 M I-, resulting in a pressure of I2 that is 0.142 atm and a chromium (III) ion concentration of 0.45 M
The electron sea is localized between two metal atoms at a time. 4. The metal is held together by the attraction between the metal ion cores and the sea of valence electrons
What is the strongest base that may exist in water. What happens to stronger bases
What is the concentration of OH (in M) initially present in a 12 M NH solution? Hint: The K of NH is 1.8x10. Express your answer to two significant figures.
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