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The Law of Conservation of Mass states that matter is neither created nor destroyed in a chemical reaction. How do you explain iron nails getting heavier as they rust?
Calculate How many grams of H2O at temperature 25 degree Celsius should be poored on the ice with no water in flask initially.
Add charges, single electron dots, and/or pairs of dots as appropriate to show the Lewis symbols for the most stable ion of each element. Treat n=4 as the valence shell in all cases.
Calibration of a glass electrode gave a reading of 148.7 mV with 0.05 m potassium dihydrogen citrate buffer standard (pH = 3.766) and a reading of -167.4 mV with 0.01 m borax buffer standard (pH = 9.139), both measured at 30°C.
Explain how the electron configuration of calcium can be determined by changes in I.E. (specifically, the large changes, for example between electron 18 and 19).
what is happening to the observed cell potential, Ecell and E0Cell as Zn2+ increases and Cu2+ decreases?
The Ksp for silver sulfate (Ag2SO4) is 1.2 multiplied by 10-5. Calculate the solubility of silver sulfate in each of the following.
A solid aluminum sphere has a mass of 87g. How do you use the density of aluminum to find the radius of the sphere in inches
Balance each of the following neutralization reactions. Express your answer as a chemical equation. Identify all of the phases in answer.
The following reaction is used to generate hydrogen gas in the laboratory. If 243 mL of gas is collected over water at 298K and have a total pressure of 745 mm Hg, what madd of hydrogen is produced
The specific heat of the liquid is 4.7 J/g.K and the specific heat of the vapor is 2.2 J/g.K. its enthalpy of vaporization is 25.1 kJ/mol. If you heat 4.6 kg of liquid ammonia from -62.0 degrees C to its boiling point of -33.6 degrees C, and then ..
Two solid forms of elemental sulfur (S8) are rhombic and monoclinic, denoted A and B, respectively. For the transformation S8(s,A) --> S8(s,B), dH* = 330 J/mol and dS* = 80 J/mol*K.
Question- Sketch the 2s, 3p, and the 3d orbitals using 3- dimensional axes for each plot (you will have total of 9 plots for the orbitals) label each plot with the specific orbital orientation,
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