Recent activity by GudrunBoyer

1 answer 25 views

How can chemistry students effectively perform experiments and learn practical skills when they have limited access to laboratory equipment and facilities?

asked 23 hours ago in Chemical education

1 answer 32 views

Calculate the number of electrons transferred when 1 mole of magnesium is oxidized to form magnesium ions in an electrochemical cell. The balanced half-reaction is Mg → Mg2+ + 2e-.

answered 2 days ago in ElectroChemistry

1 answer 28 views

How does changing the reactant stoichiometry affect the reaction rate of a chemical reaction, and what is the quantitative relationship between the two variables?

asked 2 days ago in Chemical kinetics

1 answer 33 views

How can the analysis of X-ray fluorescence spectra be used to identify the chemical composition and concentration of elements in a given sample, and what factors influence the accuracy and precision of this technique?

answered Jan 29 in Analytical Chemistry

1 answer 5 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.

answered Jan 22 in ElectroChemistry

1 answer 18 views

What is the impact of sleep on mental health?

answered Jan 20 in Psychology

1 answer 17 views

What is the difference between cognitive behavioural therapy and dialectical behaviour therapy?

asked Jan 17 in Psychology

1 answer 5 views

Who proposed the rational choice theory?

asked Jan 16 in Psychology

1 answer 13 views

What is the name of the protective layer of gases that surrounds the earth and blocks harmful rays from the sun?

asked Jan 7 in Science

1 answer 20 views

What causes holes in bread?

answered Jan 6 in Science

1 answer 53 views

The help with diffusion comes from special proteins in the membrane known as what?

answered Jan 2 in Science

1 answer 55 views

Light emitted by atoms is polychromatic—containing more than one of these?

answered Dec 31, 2024 in Science

1 answer 11 views

Amphibians have permeable skin which allows for the exchange of oxygen and carbon dioxide, what is this "breathing called?"

answered Dec 30, 2024 in Science

1 answer 38 views

What is a group of connected cells that have a similar function within an organism called?

answered Dec 28, 2024 in Science

1 answer 46 views

The characteristic sound of a motorcycle buzzing by is an example of which effect?

answered Dec 27, 2024 in Science

1 answer 39 views

A mass suspended by a wire is a simple type of what and undergoes simple harmonic motion for amplitudes less than about 15 degrees?

answered Dec 27, 2024 in Science

1 answer 21 views

Platelets play a role in what cascade of reactions that converts plasma fibrinogen to fibrin?

asked Dec 27, 2024 in Science

1 answer 12 views

Biodiversity hot spots are prime candidates for protection because they are prone to what species fate?

asked Dec 27, 2024 in Science

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