Questions by LinoShearer

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1 answer 31 views

How can inadequate training for chemistry teachers be improved to better equip them with the knowledge and skills necessary to effectively teach and engage students in the subject of chemistry?

asked 14 hours ago in Chemical education

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1 answer 47 views

Calculate the entropy change for the combustion of methane (CH4) at 298 K and 1 atm pressure, given the standard molar entropies of CH4, H2O (g), and O2 (g) are 186.3 J/K/mol, 188.7 J/K/mol, and 205.0 J/K/mol, respectively. The balanced chemical equation for the reaction is:CH4 (g) + 2 O2 (g) -> CO2 (g) + 2 H2O (g)

asked Jan 23 in Chemical thermodynamics

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1 answer 47 views

Calculate the enthalpy change for the reaction: 2H2(g) + O2(g) --> 2H2O(g) given the following enthalpy changes: H2(g) + 1/2O2(g) --> H2O(g) ΔH1 = -286 kJ/molH2(g) + 1/2Cl2(g) --> HCl(g) ΔH2 = -92 kJ/mol Cl2(g) --> 2Cl(g) ΔH3 = +242 kJ/molHCl(g) + 1/2O2(g) --> H2O(g) + Cl2(g) ΔH4 = -184 kJ/mol

asked Jan 23 in Chemical reactions

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1 answer 46 views

A chemistry student needs to calculate the heat of hydration for the reaction between anhydrous magnesium chloride (MgCl2) and water (H2O) using the following data: the enthalpy change for the dissolution of anhydrous magnesium chloride in water is -63.3 kJ/mol, and the enthalpy change for the hydration of magnesium ions (Mg2+) and chloride ions (Cl-) is -192 kJ/mol and -131 kJ/mol, respectively. Calculate the overall heat of hydration (in kJ/mol) for the reaction: MgCl2(s) + 6H2O(l) → MgCl2.6H2O(s)

asked Jan 22 in ThermoChemistry

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1 answer 27 views

What is the role of psychology in artificial intelligence?

asked Jan 20 in Psychology

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1 answer 27 views

Why do we experience the McGurk effect?

asked Jan 15 in Psychology

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1 answer 17 views

What is the difference between reactive and proactive aggression?

asked Jan 14 in Psychology

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1 answer 18 views

What type of equations allows calculation of the wavelength of any moving object?

asked Jan 8 in Science

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1 answer 27 views

What color is the fungus in blue cheese?

asked Jan 6 in Science

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1 answer 24 views

Redox reactions, like other chemical reactions, begin with a product and end with what?

asked Dec 31, 2024 in Science

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1 answer 28 views

How does the distance between galaxies change as the universe expands?

asked Dec 30, 2024 in Science

0 votes

1 answer 70 views

When blood engorged capillaries leak fluid into neighboring tissues, what occurs?

asked Dec 27, 2024 in Science

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1 answer 22 views

How often does sperm develop in humans?

asked Dec 27, 2024 in Science

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1 answer 8 views

In what unit is speed usually measured?

asked Dec 27, 2024 in Science

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