Recent activity by AlisonEastwo

1 answer 30 views

Calculate the total heat change when 100 ml of 0.5 M HCl is mixed with 100 ml of 0.5 M NaOH at 25°C. Assume the heat capacity of the solution is 4.18 J/(g°C) and the density of the solution is 1 g/mL. The enthalpy of neutralization of HCl and NaOH is -57.3 kJ/mol.

answered 2 days ago in ThermoChemistry

1 answer 41 views

How does altering the pressure affect the equilibrium position in a reversible chemical reaction, and what are the factors that determine whether the reaction will shift to the side with a greater number of moles of gas or to the side with a lesser number of moles of gas? Provide an explanation using an example of a gaseous reaction.

asked 6 days ago in Chemical equilibrium

1 answer 51 views

Calculate the enthalpy change for the polymerization of ethylene to polyethylene if it is known that the heat of combustion of ethylene is -1411 kJ/mol and the enthalpy of formation of polyethylene is -248 kJ/mol. Assume that the reaction occurs at constant pressure and temperature of 25°C.

asked Jan 23 in ThermoChemistry

1 answer 38 views

Calculate the change in entropy of the system when 2 moles of ammonia react to form 3 moles of hydrogen gas and 1 mole of nitrogen gas. The reaction takes place at a constant temperature of 298 K and at a pressure of 1 atm. The molar entropy of each component in the reaction is given below:Ammonia: 192.5 J/K·molHydrogen gas: 130.6 J/K·molNitrogen gas: 191.6 J/K·mol

asked Jan 23 in Chemical thermodynamics

1 answer 76 views

What products are formed from the electrophilic addition reaction between propene and hydrogen bromide?

asked Jan 21 in Organic Chemistry

1 answer 34 views

Why was the feminist movement important for the use of reclaimed language?

answered Jan 20 in Psychology

1 answer 56 views

How can theories of situated cognition inform artificial intelligence?

answered Jan 17 in Psychology

1 answer 14 views

What is the connectionist theory of language processing?

answered Jan 17 in Psychology

1 answer 23 views

Who developed the humanistic theory of personality disorders?

answered Jan 16 in Psychology

1 answer 20 views

Where might bias be introduced in a clinical trial?

asked Jan 16 in Psychology

1 answer 29 views

What is the theory of positive emotions?

asked Jan 16 in Psychology

1 answer 32 views

What is Erikson's psychosocial theory?

asked Jan 15 in Psychology

1 answer 22 views

What is the point on the ground that is located directly above where underground rocks fracture (or the "focus" point)?

answered Jan 7 in Science

1 answer 15 views

What are the tiny packets of energy the sun gives off called?

answered Jan 6 in Science

1 answer 16 views

What are the names of foul-smelling amines, formed as a part of the decay process after death?

asked Jan 6 in Science

1 answer 19 views

Each new horizontal row of the periodic table corresponds to the beginning of a new period because a new principal energy level is being filled with what?

answered Dec 30, 2024 in Science

1 answer 19 views

Changing the shape of an elastic material gives it what type of energy?

asked Dec 30, 2024 in Science

1 answer 37 views

A light bulb converts electrical energy to light and what?

answered Dec 30, 2024 in Science

1 answer 8 views

What type of stress causes horizontal motions in strike-slip faults?

answered Dec 27, 2024 in Science

1 answer 28 views

Where does the heartbeat originate in vertebrates?

answered Dec 27, 2024 in Science

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