Questions by TatianaSteil

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1 answer 32 views

Here's a precise problem for the student to solve: What is the effect of molecular weight and temperature on the shear viscosity of a polymer melt, and how does this relationship change for different types of polymer structures (e.g. linear, branched, or cross-linked)?

asked Feb 4 in Polymer Chemistry

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1 answer 64 views

Calculate the wavelength of light that must be absorbed for an electron in a hydrogen atom to transition from the n=3 to n=2 energy level, using the equation for energy of a hydrogen atom: E = -13.6/n^2 eV and the Planck constant, h = 6.626 × 10^-34 J s.

asked Feb 3 in Quantum Chemistry

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1 answer 96 views

How can a chemist protect a specific functional group in a molecule during a chemical reaction that may cause unwanted reactions with that group, while still allowing for other desired reactions to occur? Provide a specific example of a protecting group used in organic synthesis and explain the process of its removal.

asked Jan 30 in Organic Chemistry

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1 answer 85 views

Using polarography, determine the concentration of lead ions (Pb2+) in a drinking water sample obtained from a home in a certain locality.

asked Jan 30 in Analytical Chemistry

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1 answer 60 views

Calculate the bond order and bond length of the nitric oxide molecule (NO).

asked Jan 23 in Inorganic Chemistry

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1 answer 10 views

A steel pipe is in contact with a copper pipe in a galvanic couple, with the steel pipe acting as the anode. The corrosion current density of the steel pipe in the couple is 0.008 mA/cm². Determine the rate of corrosion of the steel pipe, assuming that the density of steel is 7.8 g/cm³ and the thickness of the pipe is 2.5 mm. Also, calculate the time taken for the pipe to corrode completely, assuming an initial mass of 5 kg.

asked Jan 22 in ElectroChemistry

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1 answer 74 views

How did John Searle's Chinese Room thought experiment challenge artificial intelligence?

asked Jan 20 in Psychology

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1 answer 66 views

According to the Müller-Lyer illusion, how does our perception of line length vary with changes in context?

asked Jan 20 in Psychology

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1 answer 65 views

Who is eligible for the Fly-In Fly-Out Mental Health Support Scheme?

asked Jan 17 in Psychology

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1 answer 13 views

Why is social constructionism significant?

asked Jan 16 in Psychology

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1 answer 25 views

When examining cognitive theories, what is the difference between bottom-up and top-down processing?

asked Jan 16 in Psychology

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1 answer 34 views

What is the definition of character strengths?

asked Jan 15 in Psychology

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1 answer 47 views

What is the importance of Cultural Ecology?

asked Jan 15 in Psychology

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1 answer 40 views

How does the person-centred approach of Carl Rogers differ from the psychodynamic theory?

asked Jan 15 in Psychology

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1 answer 38 views

What is the Trivers-Willard hypothesis?

asked Jan 15 in Psychology

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1 answer 84 views

What is the difference between an open and closed group?

asked Jan 14 in Psychology

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1 answer 53 views

How do Western and Eastern approaches to cognition influence problem-solving?

asked Jan 14 in Psychology

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1 answer 38 views

Compare and contrast positive reinforcement and negative reinforcement.

asked Jan 14 in Psychology

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1 answer 46 views

Where does the development of a fetus take place?

asked Jan 8 in Science

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1 answer 58 views

Which systems work together to provide cells with the oxygen they need for cellular respiration?

asked Jan 8 in Science

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