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Calculate the standard enthalpy change for the following reaction: [CoCl(NH3)5]2+ (aq) + 4H2O (l) → [Co(H2O)6]2+ (aq) + 2Cl- (aq) + 5NH3 (g)Given that the standard enthalpy of formation of [Co(H2O)6]2+ (aq) is -1518.5 kJ/mol, [CoCl(NH3)5]2+ (aq) is -426.9 kJ/mol, and the enthalpy of vaporization of water is 44.0 kJ/mol.
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Feb 3
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Chemical thermodynamics
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Calculate the standard enthalpy change for the combustion of 1 mole of methane gas (CH4) under standard conditions given the following balanced chemical equation:CH4(g) + 2O2(g)→CO2(g) + 2H2O(g)(Standard conditions: temperature of 298K and pressure of 1 bar)
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Feb 3
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Chemical thermodynamics
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10
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Consider the following reaction: 2 SO2(g) + O2(g) ⇌ 2SO3(g) ΔH = -198 kJ/mol What will be the effect on the equilibrium concentration of SO3 if:a) The pressure of the system is increased?b) The concentration of SO2 is increased?c) A catalyst is added to the system?
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Jan 30
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Chemical reactions
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7
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What are some significant milestones in the history of chemistry that have shaped the modern field of chemistry, and how have they impacted our understanding of chemical phenomena?
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Jan 30
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Chemical education
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8
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Who created the idea of savouring?
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Jan 17
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Psychology
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25
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What is mourning?
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Jan 16
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Psychology
1
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27
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According to the Health Belief Model, what is perceived susceptibility?
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Jan 16
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Psychology
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35
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What is long-term depression?
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Jan 15
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Psychology
1
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38
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Who developed the hierarchy of needs theory?
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Jan 10
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Psychology
1
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60
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Which law states that a pair of alleles is separated, or segregated, during the formation of gametes?
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Jan 8
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Science
1
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31
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What traits are those that are inherited unchanged in a hybridization?
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Jan 8
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Science
1
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26
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What is the name of the stage of life when a child becomes sexually mature?
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Jan 7
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Science
1
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29
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In the cardiovascular system, net filtration pressure represents the interaction of osmotic pressures and what other pressures?
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Dec 31, 2024
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Science
1
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26
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What is the term for how close a measurement is to the true value?
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Dec 28, 2024
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Science
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