Recent activity by Kimberly5191

1 answer 31 views

How can chemistry students overcome the challenge of limited availability of chemistry-related internships and job opportunities in today's market?

answered 1 day ago in Chemical education

1 answer 31 views

Calculate the standard enthalpy change for the combustion of ethane (C2H6) given the balanced chemical equation:C2H6(g) + 3.5 O2(g) → 2CO2(g) + 3H2O(l)Assume all reactants and products are in standard states and use the following standard enthalpy of formation values:ΔHf°(C2H6) = -84.7 kJ/molΔHf°(CO2) = -393.5 kJ/molΔHf°(H2O) = -285.8 kJ/mol

asked 2 days ago in Chemical thermodynamics

1 answer 49 views

What is an efficient and sustainable method for the synthesis of metal nanoparticles? How do different synthesis methods impact the size, shape, and properties of the nanoparticles produced?

answered 5 days ago in Materials Chemistry

1 answer 45 views

A chemistry student needs to determine the rate constant for the reaction between hydrochloric acid and sodium thiosulfate. If the initial concentration of hydrochloric acid is 0.1 M, the initial concentration of sodium thiosulfate is 0.05 M, and the initial rate of the reaction is 8.7 x 10^-5 mol/L.s, what is the rate constant for this reaction?

answered Jan 22 in Chemical kinetics

1 answer 46 views

A chemistry student needs to determine the percentage of iron (Fe) present in a given iron ore sample using gravimetric analysis. The student is provided with the mass of the iron ore sample and a standardized solution of potassium dichromate (K2Cr2O7) to use for the analysis. What is the percentage of iron (Fe) in the given iron ore sample?

answered Jan 22 in Analytical Chemistry

1 answer 27 views

Why is the use of reclaimed language important in promoting self-esteem?

answered Jan 20 in Psychology

1 answer 23 views

How does the ethological approach evaluate animal behaviour?

asked Jan 16 in Psychology

1 answer 25 views

When does latent learning occur according to Tolman?

asked Jan 15 in Psychology

1 answer 17 views

How does the social exchange theory explain helping behaviour?

asked Jan 15 in Psychology

1 answer 23 views

Is the client-centered approach appropriate for all clients?

asked Jan 15 in Psychology

1 answer 24 views

What are the three major components of the information processing model?

answered Jan 15 in Psychology

1 answer 6 views

Which parasite causes downy mildew in grape plants?

asked Jan 8 in Science

1 answer 60 views

Topographic maps have a horizontal scale to indicate what distances?

asked Jan 2 in Science

1 answer 52 views

The cell wall of plants is made up of a complex carbohydrate that is a polymer of what sugar?

answered Dec 31, 2024 in Science

1 answer 27 views

Motor vehicles account for almost half of the consumption of what?

answered Dec 31, 2024 in Science

1 answer 25 views

What chambers are responsible for pumping blood out of the heart?

answered Dec 27, 2024 in Science

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