Recent activity by JustineDez22

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Calculate the standard enthalpy change for the reaction of 25.0 mL of 0.100 M HCl with 25.0 mL of 0.100 M NaOH at 25°C, given that the specific heat capacity of the solution is 4.18 J/g°C and the density of the solution is 1.00 g/mL. The balanced chemical equation for the reaction is:HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l) Assume the heat of the reaction is absorbed by the solution and the reaction has reached equilibrium.

asked 2 days ago in Chemical thermodynamics

1 answer 21 views

Calculate the standard enthalpy change for the phase transition reaction of solid iodine to iodine vapor using the following information:- Standard enthalpy of fusion of solid iodine = 15.52 kJ/mol- Standard enthalpy of vaporization of iodine = 41.57 kJ/mol- Heat capacity of solid iodine = 54.44 J/mol*K- Heat capacity of iodine vapor = 27.32 J/mol*K- Melting point of iodine = 386.85 K- Boiling point of iodine = 457.4 K

asked 2 days ago in Chemical thermodynamics

1 answer 62 views

How do the electronic properties of graphene change as the number of layers increase, and how does this affect its optical properties?

asked 5 days ago in Quantum Chemistry

1 answer 65 views

What steps can be taken to increase a student's exposure to current research in chemistry, and how can it benefit their overall understanding of the subject?

answered 6 days ago in Chemical education

1 answer 36 views

Calculate the enthalpy change when 50 mL of 2 M HCl solution reacts with excess NaOH according to the balanced chemical equation: HCl (aq) + NaOH (aq) → NaCl (aq) + H2O (l) Given that the specific heat capacity of the solution is 4.18 J/g°C, and the initial and final temperatures of the solution are 25°C and 35°C, respectively. Assume a density of 1 g/mL for the solution.

asked Jan 23 in Chemical reactions

1 answer 31 views

Calculate the enthalpy change for the combustion of 1 mole of methane gas (CH4) at standard conditions (25°C and 1 atm), given that the standard enthalpy of formation of methane is -74.87 kJ/mol and the standard enthalpy of formation of carbon dioxide (CO2) and water (H2O) are -393.51 kJ/mol and -285.83 kJ/mol, respectively.

answered Jan 23 in ThermoChemistry

1 answer 25 views

How does the attribution theory explain how people perceive events?

answered Jan 20 in Psychology

1 answer 17 views

What is the illusory correlation?

asked Jan 16 in Psychology

1 answer 50 views

What is the major criticism of the trait theory of personality?

asked Jan 15 in Psychology

1 answer 19 views

How does the social cognitive theory explain gender development?

answered Jan 15 in Psychology

1 answer 20 views

Who developed the Disability Identity Theory?

asked Jan 15 in Psychology

1 answer 26 views

What occurs in a formerly inhabited area that was disturbed?

answered Jan 7 in Science

1 answer 6 views

This bodily defense function attacks pathogens and includes inflammatory response and phagocytosis?

asked Jan 2 in Science

1 answer 27 views

The size and symmetry of a beetle’s or an elk’s antlers or a grasshopper’s song communicate rather clearly their state of what?

asked Jan 2 in Science

1 answer 20 views

How do some animals change their depth?

asked Dec 30, 2024 in Science

1 answer 22 views

What kind of system do echinoderms possess?

asked Dec 27, 2024 in Science

1 answer 29 views

Photoreceptors in each ocellus receive light only through the opening where there are none of which cells?

answered Dec 27, 2024 in Science

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