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Question- Many gases are produced through chemical reactions inside closed systems in a research lab because only a small amount of the gas is required as a reagent for a further chemical reaction. An example reaction to produce chlorine gas is: 2 HCl + NaOCl --> Cl2 + NaCl+ H2O If 0.1 mols of HCl Is reacted with .04 mols of NaOCl, what is the change in pressure assuming that T is 298 K and V is 2.25 L? Use 8.31.4 J/mol K for the ideal gas constant.
My main issue is that I think I have to have a balanced reaction in order to do the calculations.
Explain what is the percent mass of calcium in a 1.27-g calcium supplement if 0.44 grams of calcium carbonate was precipitated
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