Percentage of calcium carbonate in the sample

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Reference no: EM1317300

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.

Reference no: EM1317300

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