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Problem- A zero-order reaction has a constant rate of 4.50 x 10^4 M/s. If after 80.0 seconds the concentration has dropped 9.00 x 10^2 M. what was the initial concentration? Express your answer with the appropriate units
Please write answer for each section to receive points
Write the corresponding ionic and net ionic equations after Balancing these given equations
Select the element with the more negative more exothermic electron affinity from each of the following pairs.
A metal sulfide is 71.6% metal by mass. What is the mass fraction of the metal in the metal sulfide?
a graduated cylinder contains 154 of water. a 15.0 piece of iron density 7.86 and a 18.0 piece of lead are added.
Explain, in detail, how you would prepare this solution so a labmate could prepare it from your instructions
Ethanol (C2H5OH) melts at -114 °C. The enthalpy of fusion is 5.02 kJ/mol. The specific heats of solid and liquid ethanol are 0.97 J/g-K and 2.3 J/g-K, respectively.
Problem- A Cu/Cu2+ concentration cell has a voltage of 0.20V at 25 ?C. The concentration of Cu2+ in one of the half-cells is 1.6×10?3M
b) Draw a plausible structure for this compound that contains aldehyde and ketone functional groups.
flask of nitrogen is collected over water at a total pressure 765.0 mm Hg. If the partial pressure of the water vapor is 25.0 mm Hg, what is the pressure exerted by the nitrogen?
Carbon tetrachloride, CCl4, is nonpolar. What forces hold the molecules together?
The hydration of carbon dioxide (add water to CO2) produces carbonic acid and is part of the equilibrium that controls carbon dioxide levels in the blood during respiration of vertebrate organisms. How can this reaction be explained using the Lewi..
Separate the following four compounds using extraction and isolate them in their neutral (as shown) form. Follow the flow chart in Padias (but draw the compounds instead of using the generic "HA," "B," or "N" notation).
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