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Gas stoichiometry.
Ethanol (C2H5OH ) burns in air: C2H5OH (I) + O2(g) ----> CO2(g) + H2O (I) Balance the equation and determine the volume of air in liters at 35.0 degrees C and 790 mmHg required to burn 227 g of ethanol. Assume that air is 21.0 percent O2 by volume.
Percentage of calcium carbonate in the sample.
Dissolving 3.00 g of an impure sample of calcium carbonate in hydrochloric acid produced 0.656 L of carbon dioxide (measured at 20.0 degrees C and 792mm/Hg). Calculate the percent by mass of calcium carbonate in the sample. State any assumptions.
Find the rate of the reaction - What is the rate of the reaction?
Find the pH solution & Hydronium ion concentration and What is the pH of a solution of 0.17 M acid and 0.81 M of its conjugate base if the pKa = 8.62?
Prepare the molecular formula for given compounds and determine the amount of molecules present and write the molecular formula and determine how many grams of each you have
Write balanced chemical equation and evaluate the molecular weight of the reactants and Calculate the molecular weights of the reactant.
Advantages and disadvantages of using Alternative Fuel and Would you consider buying one of these in the future? Why or Why Not and Why do you think there are not more of these vehicles in use?
Chemical Kinetics - Show that only the reactants of the slow step of a reaction are found in the rate law of the reaction - which of the two steps is slower and which substance (if any) is probably an unstable intermediate?
Find the partial pressure and concentration of Nitrogen, Oxygen, and Carbon dioxide.
Sketch Flow diagram and explain the extraction process - What is the purpose of extracting the organic layer with water in the first extraction step?
Hydronium ion concentration using Henderson-Hasselbalch equation - What is the hydronium ion concentration of a solution
Periodicity in the ionization energy and balancing the equation - Complete the following chemical reactions by writing the product(s) and balancing the equations:
Solving this question helps the student to understand how to find the limiting reactant and how much product is produced and What mass of product may be produced?
Analysis of corrosion mechanisms and preventative measures
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