Use the following to answer the next 2 questions Much of the lead used for batteries and ammunition during the First World War and the Second World War came from galena, PbS(s). Equation I represents the first step in the refining process to produce solid lead from galena. Equation I 2PbS(s) + O₂(g) 2PbO(s) + 250₂(9) A,H-827.4 kJ If energy were included as a term in the equation, it would written as Select one: O 2PbS(s) + O₂(g) + 827.4 kJ ● 2PbS(s) + O₂(g) O 2PbS(s) + O₂(g) O 2PbS(s) + O₂(g)-827.4 kJ Clear my choice 2PbO(s) + 2SO₂(g) 2PbO(s) + 25O₂(g) + 827.4 kJ 2PbO(s) + 25O₂(g) - 827.4 kJ 2PbO(s) + 2SO₂(g) The enthalpy change for 1.00 mol of galena being oxidized in Equation I, expressed in scientific notation, is ±a.bc × 10. kj The values of a, b, c and d are + and
Use the following to answer the next 2 questions Much of the lead used for batteries and ammunition during the First World War and the Second World War came from galena, PbS(s). Equation I represents the first step in the refining process to produce solid lead from galena. Equation I 2PbS(s) + O₂(g) 2PbO(s) + 250₂(9) A,H-827.4 kJ If energy were included as a term in the equation, it would written as Select one: O 2PbS(s) + O₂(g) + 827.4 kJ ● 2PbS(s) + O₂(g) O 2PbS(s) + O₂(g) O 2PbS(s) + O₂(g)-827.4 kJ Clear my choice 2PbO(s) + 2SO₂(g) 2PbO(s) + 25O₂(g) + 827.4 kJ 2PbO(s) + 25O₂(g) - 827.4 kJ 2PbO(s) + 2SO₂(g) The enthalpy change for 1.00 mol of galena being oxidized in Equation I, expressed in scientific notation, is ±a.bc × 10. kj The values of a, b, c and d are + and
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The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
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Transcribed Image Text:Use the following to answer the next 2 questions
Much of the lead used for batteries and ammunition during the First World War and the Second World War came from galena, PbS(s). Equation I represents the first step in the refining process to produce solid lead from galena.
Equation I 2PbS(s) + O₂(g) → 2PbO(s) + 25O₂(g) AH° -827.4 kJ
If energy were included as a term
the equation, it would written as
Select one:
2PbO(s) + 25O₂(g)
O2PbS(s) + O₂(g) + 827.4 kJ
Ⓒ2PbS(s) + O₂(g) → 2PbO(s) +
2SO₂(g) + 827.4 kJ
O 2PbS(s) + O₂(g) → 2PbO(s) + 2SO₂(g) - 827.4 kJ
O 2PbS(s) + O₂(g) - 827.4 kJ
2PbO(s) + 2SO₂(g)
Clear my choice
The enthalpy change for 1.00 mol of galena being oxidized in Equation expressed in scientific notation, is ta.bc x 10d The values of a, b, c and d are +
mol
and
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