Recent activity by EwanDelacruz

1 answer 71 views

What is the concentration of lead (Pb) in a soil sample collected from a playground using X-ray fluorescence spectroscopy?

asked 6 days ago in Analytical Chemistry

1 answer 48 views

A chemistry student needs to determine the concentration of iron (III) ions in a water sample using spectrophotometry. The water sample contains an unknown amount of iron (III) ions that need to be quantified with a high degree of accuracy. The student has access to a spectrophotometer and an iron (III) ion standard solution to be used as a reference for the analysis. What is the concentration of iron (III) ions in the water sample?

asked Jan 22 in Analytical Chemistry

1 answer 44 views

How does marijuana affect the brain?

asked Jan 20 in Psychology

1 answer 5 views

What is the gender role strain paradigm?

answered Jan 17 in Psychology

1 answer 19 views

What are the three main components of a hypothesis?

asked Jan 14 in Psychology

1 answer 27 views

What is the trait theory of personality?

answered Jan 13 in Psychology

1 answer 25 views

What is the largest artery in the body called?

asked Jan 7 in Science

1 answer 35 views

What is is a measurement of the force amplification of a machine?

answered Jan 6 in Science

1 answer 7 views

What are considered to be the smallest particles of matter?

answered Jan 2 in Science

1 answer 30 views

Plastics are common examples of synthetic polymers of what abundant element?

answered Dec 31, 2024 in Science

1 answer 9 views

What two activities are especially important when a number of local populations are linked, forming a metapopulation?

answered Dec 27, 2024 in Science

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