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Chemistry, 10.12.2019 05:31, hnsanders00
A2 m solution of nacl in water is at 20.0 oc. the density of the solution was measured to be 1.0768 g/ml at this temperature. calculate the molality of the salt solution. express your answer numerically to three significant figures.
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Chemistry, 22.06.2019 20:00, 20calzoy
There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .
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A2 m solution of nacl in water is at 20.0 oc. the density of the solution was measured to be 1.0768...
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