Chemistry, 02.08.2021 17:10 andreamarie2004amg
Reaction Equation ∆H (kJ/mol) -450 Reaction 1: Mg(s) + 2HCl(aq) — MgCl2(aq) + Hz(9) Reaction 2: MgO(s) + 2HCl(aq) — MgCl2(aq) + H2O(1) Reaction 3: H2(g) + 220,(9) — H2O(1) -81 -286
Reaction(s)_released heat. W
Reaction_released the most heat per mole of reactant
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The tendency of water molecules to stick together is referred to as a) adhesion b) polarity c) cohesion d) transpiration e) evaporation
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Answer explain why it is not possible to deduce a complete order of reactivity.
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A2.5% (by mass) solution concentration signifies that there is a 2.5 % (by mass) solution concentration signifies that there is blank of solute in every 100 g of solution. of solute in every 100 g of solution
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Chemistry, 22.06.2019 20:00
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 .
Answers: 3
Reaction Equation ∆H (kJ/mol) -450 Reaction 1: Mg(s) + 2HCl(aq) — MgCl2(aq) + Hz(9) Reaction 2: MgO(...
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