Recent activity by ShaunaB50372

1 answer 25 views

Here's a precise problem for a chemistry student:Calculate the standard enthalpy of formation of propane (C3H8) using the following information: ΔH°f CO2 = -393.5 kJ/molΔH°f H2O(l) = -285.8 kJ/molΔH°f C3H8(g) = ?

asked 1 day ago in Chemical thermodynamics

1 answer 26 views

Calculate the standard enthalpy change for the reaction in which 50.0 mL 0.20 M HCl(aq) is mixed with 50.0 mL 0.10 M NaOH(aq) in a constant pressure calorimeter. Given that the density of both the solutions is 1.00 g/mL and the specific heat capacity of the mixture is 4.18 J/g°C. Assume the temperature change to be negligible.

answered 2 days ago in Chemical thermodynamics

1 answer 19 views

Calculate the standard enthalpy change (ΔH°), standard entropy change (ΔS°) and standard Gibbs free energy change (ΔG°) of the reaction:2A(g) + 3B(g) → C(g) + 2D(g)given thatΔH°f[A(g)] = 200 kJ mol^-1Δ H°f [B(g)] = 100 kJ mol^-1Δ H°f [C(g)] = 400 kJ mol^-1Δ H°f [D(g)] = 0 kJ mol^-1ΔH°= -400 kJ mol^-1Temperature (T) = 298 KThe student needs to use their knowledge in quantum chemistry and thermodynamics to calculate the thermodynamic properties of the given reaction.

answered 2 days ago in Quantum Chemistry

1 answer 58 views

How does the drug aspirin prevent blood clots and what specific chemical reactions occur in the body that cause this prevention?

asked 5 days ago in Medicinal Chemistry

1 answer 69 views

A bottle contains a mixture of nitrogen and oxygen gases. At a specific temperature and pressure, the nitrogen molecules move on an average velocity of 500 m/s and oxygen molecules move at 400 m/s. What is the partial pressure of nitrogen and oxygen in the mixture if the total pressure of the gas is 1 atm?

answered Jan 22 in Physical Chemistry

1 answer 6 views

What is the main criticism of cross-cultural psychology?

asked Jan 16 in Psychology

1 answer 34 views

What has research found about how social learning theory explains gender development?

answered Jan 16 in Psychology

1 answer 29 views

Who proposed the theory of planned behaviour?

answered Jan 15 in Psychology

1 answer 20 views

What is the social cognition approach?

asked Jan 13 in Psychology

1 answer 4 views

What type of contamination causes almost 90% of diarrheal disease worldwide?

answered Jan 8 in Science

1 answer 24 views

What keeps the earth orbiting the sun?

asked Jan 7 in Science

1 answer 22 views

Plants not only contribute food but what else for organisms?

asked Dec 31, 2024 in Science

1 answer 26 views

How do you determine the atomic weight of an element?

asked Dec 30, 2024 in Science

1 answer 19 views

Culprits in the common cold and aids, what infectious agents are far smaller and simpler than bacteria?

answered Dec 30, 2024 in Science

1 answer 18 views

What is occasional chest pain known as?

asked Dec 27, 2024 in Science

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