Recent activity by YKZRichie071

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How can a chemistry student prepare phenylalanine from benzyl chloride and ammonia? What is the step-by-step process involved in the synthesis and what are the necessary reagents and conditions required for the reaction to take place? How can the purity of the obtained phenylalanine be determined and what are the potential sources of error in the experiment?

answered 1 day ago in Chemical synthesis

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Calculate the enthalpy of vaporization of water given the following information: - The boiling point of water is 100°C- The specific heat capacity of liquid water is 4.18 J/g·°C- The specific heat capacity of steam is 1.84 J/g·°C- The heat of fusion of water is 40.7 kJ/mol - The molar mass of water is 18.015 g/mol- The heat capacity of the container is negligible- Assume that the vaporized water behaves ideally and has a constant heat capacity

answered Jan 23 in ThermoChemistry

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A student is trying to synthesize a compound in the lab. The theoretical yield of the compound is 15 g, but due to some errors during the experiment, the student was only able to obtain 10 g in the end. Calculate the percent yield of the experiment.

answered Jan 22 in Chemical reactions

1 answer 73 views

A chemistry student needs to determine the effect of increasing the temperature on the equilibrium constant of the formation of a complex ion. Given the equation: Fe3+ + 4OH- ↔ Fe(OH)4- Kc = 2.1 x 10^-18 If the initial concentration of Fe3+ is 0.02 M and OH- is 0.1 M at 25°C, what is the new equilibrium constant at 35°C assuming the reaction is exothermic and the heat of reaction is -20 kJ/mol?

answered Jan 22 in Chemical equilibrium

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When is cognitive processing of a message most likely to occur?

asked Jan 20 in Psychology

1 answer 15 views

How can social learning theory explain aggression in children?

answered Jan 17 in Psychology

1 answer 32 views

Compare the neurotransmitter systems targeted by selective serotonin reuptake inhibitors (SSRIs) and tricyclic antidepressants (TCAs) in the treatment of depression.

asked Jan 16 in Psychology

1 answer 32 views

How does the social identity theory explain prejudice against vulnerable populations?

answered Jan 15 in Psychology

1 answer 26 views

What is the difference between temperament and personality?

asked Jan 15 in Psychology

1 answer 45 views

What is the name of the first stage in Erikson's theory of psychosocial development?

asked Jan 14 in Psychology

1 answer 24 views

What is Positive Psychology?

asked Jan 13 in Psychology

1 answer 26 views

What is the experimental method?

answered Jan 13 in Psychology

1 answer 16 views

What helps deposit the material in caves as stalactites, stalagmites, and columns

asked Jan 6 in Science

1 answer 26 views

What causes food to move through the esophagus?

asked Jan 6 in Science

1 answer 5 views

What neutralizes the acidity of chyme and acts as a buffer?

answered Dec 27, 2024 in Science

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