Recent activity by KatherinDenn

1 answer 28 views

How can chemistry instructors effectively incorporate safety protocols into their teaching methods to ensure that students are adequately prepared to handle potentially hazardous materials in the lab environment?

asked 1 day ago in Chemical education

1 answer 24 views

Calculate the standard enthalpy change for the reaction of dissolving 5.00 grams of NaOH in 100.0 mL of water at 25°C, given that the heat absorbed by the solution is 11.76 kJ. (Assume the density of water is 1.00 g/mL and the heat capacity of the solution is the same as that of water.)

answered 2 days ago in Chemical thermodynamics

1 answer 62 views

What is the effect of adding titanium to an aluminum alloy and how does it improve its properties for use in aerospace applications?

answered 5 days ago in Materials Chemistry

1 answer 26 views

How can capillary electrophoresis be used to analyze the amino acid composition of a protein sample? Please provide a step-by-step explanation of the experimental design and the interpretation of the results.

answered Jan 29 in Analytical Chemistry

1 answer 52 views

A student is given a concentration of 0.1 M of CuSO4 and 0.2 M of AgNO3, and is asked to calculate the total resistance of an electrochemical cell with electrodes made of these two solutions separated by a salt bridge. The standard reduction potentials for Cu and Ag are +0.34 V and +0.80 V, respectively. Calculate the total resistance of the cell at 25°C assuming that the cell has a thickness of 1 cm and a cross-sectional area of 10 cm².

asked Jan 22 in ElectroChemistry

1 answer 20 views

Compare and contrast the Rogerian and Beckian approaches to therapy.

answered Jan 20 in Psychology

1 answer 25 views

How does evolutionary theory explain gender differences in mate selection?

asked Jan 20 in Psychology

1 answer 20 views

How can abnormal psychology inform the development of AI models used in mental health care?

answered Jan 17 in Psychology

1 answer 6 views

According to Piaget, what is the concept of object permanence?

answered Jan 15 in Psychology

1 answer 17 views

According to Lev Vygotsky's sociocultural theory, why is social interaction important in cognitive development?

asked Jan 15 in Psychology

1 answer 47 views

What are some effective interventions for promoting healthy adolescent development?

asked Jan 14 in Psychology

1 answer 23 views

What is selective attention?

answered Jan 14 in Psychology

1 answer 6 views

What is the role of cultural sensitivity in psychotherapy?

asked Jan 14 in Psychology

1 answer 36 views

Which common oxidizing agent can be used to oxidize alcohols?

answered Jan 8 in Science

1 answer 18 views

What type of vascular plants produce seeds in cones?

answered Jan 8 in Science

1 answer 6 views

What side of a mountain does the rainshadow effect occur on?

answered Jan 7 in Science

1 answer 27 views

What is the term for force that opposes motion between any touching surfaces?

answered Jan 7 in Science

1 answer 21 views

What do you call the lower layer of soil that is permanently frozen, and is a frequent feature of tundra?

asked Jan 6 in Science

1 answer 37 views

What do halogens require electrons to achieve?

asked Jan 6 in Science

1 answer 21 views

What are the two major atmospheric gases?

asked Jan 6 in Science

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