Recent activity by JeanGertz702

1 answer 57 views

What are some effective study techniques for managing time and reducing test anxiety when preparing for chemistry exams?

answered 6 days ago in Chemical education

1 answer 48 views

What is the concentration of iron (II) ion in a sample of drinking water using colorimetry, if the absorbance of the sample is found to be 0.294 and the molar absorption coefficient of iron (II) complex is 10,500 M^-1 cm^-1 at the wavelength of 505 nm?

asked 6 days ago in Analytical Chemistry

1 answer 42 views

Calculate the corrosion rate of a steel rod when it is placed in a galvanic coupling with a copper strip at 25°C. The initial weight of the steel rod was 28.6 g and it lost 0.48 g in weight after 24 hours of exposure. The area of the steel rod in contact with the electrolyte solution is 3.14 cm² and the electrode potential of the copper strip is +0.34V while the electrode potential of the steel rod is -0.44V. Using Faraday’s law of electrolysis, determine the corrosion rate of the steel rod in mmpy (mils per year).

answered Jan 23 in ElectroChemistry

1 answer 35 views

A 0.1 M solution of ammonia (NH3) has a pH of 11.64 at room temperature. If sodium hydroxide (NaOH) is added to this solution such that the concentration of OH- ions becomes 0.01 M, what will be the new pH of the solution? (Assume that the dissociation of water can be ignored)

asked Jan 22 in Chemical equilibrium

1 answer 27 views

Why is the positive psychology theory important to psychology?

answered Jan 20 in Psychology

1 answer 49 views

What are some of the ways that social categorisation influences group behaviour?

answered Jan 20 in Psychology

1 answer 19 views

According to the trichromatic theory, what is colour vision based on?

answered Jan 17 in Psychology

1 answer 32 views

Compare and contrast the concepts of internal and external validity in theory evaluation

answered Jan 16 in Psychology

1 answer 20 views

What are the limitations of the trait approach to leadership?

answered Jan 16 in Psychology

1 answer 26 views

Who developed social identity theory?

answered Jan 15 in Psychology

1 answer 27 views

What is sleep apnea?

asked Jan 13 in Psychology

1 answer 9 views

What term is used to describe birds that mate for an entire season or even stay paired for their entire life?

answered Jan 9 in Science

1 answer 17 views

White blood cells called what travel to areas of the body that are inflamed?

asked Jan 8 in Science

1 answer 21 views

What category of food includes sugars, starches and fibers?

asked Jan 6 in Science

1 answer 9 views

Something that has all of the characteristics of life is considered to be what?

answered Dec 31, 2024 in Science

1 answer 40 views

How do bipedal creatures walk?

answered Dec 30, 2024 in Science

1 answer 35 views

Earth rotates on its axis once each day and revolves around the sun how often?

answered Dec 30, 2024 in Science

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