Recent activity by NidaTimms920

1 answer 19 views

How does the coordination number of a transition metal complex affect its stability and reactivity? Mark the changes in the magnetic properties of the complex as the coordination number varies.

answered 2 days ago in Coordination Chemistry

1 answer 71 views

How can X-ray fluorescence spectroscopy be used to distinguish between iron and aluminum in a mixed sample?

answered Jan 30 in Analytical Chemistry

1 answer 54 views

Calculate the heat required to sublime 10 grams of dry ice (carbon dioxide) at its melting point (-78.5°C) and convert it to a gas at its boiling point (-57°C). The heat of sublimation of carbon dioxide is 25.2 kJ/mol.

asked Jan 23 in ThermoChemistry

1 answer 10 views

A sample of an unknown compound was analyzed using elemental analysis, and the results showed that the compound contains 12.8% hydrogen, 49.2% carbon, and 38.0% oxygen by mass. What is the empirical formula of the compound?

asked Jan 22 in Analytical Chemistry

1 answer 60 views

A chemical mixture containing 30% ethanol and 70% water needs to be separated using a distillation column. The feed rate is 1000 kg/hr and the desired purity for both products is 99%. The distillation column has 20 theoretical trays, and the reflux ratio is 2.5. Determine the number of trays required to achieve the desired purity for both products.

answered Jan 22 in Chemical engineering

1 answer 113 views

Balance the following chemical equation for the combustion of methane (CH4) in oxygen (O2) to form carbon dioxide (CO2) and water (H2O): CH4 + O2 → CO2 + H2O

answered Jan 21 in Inorganic Chemistry

1 answer 68 views

How might biological factors relate to ADHD?

asked Jan 20 in Psychology

1 answer 34 views

Can AI models be used to improve mental health outcomes?

answered Jan 17 in Psychology

1 answer 45 views

What is the 'motivation-enhancement effect'?

asked Jan 14 in Psychology

1 answer 34 views

What are the strengths of the humanistic approach?

answered Jan 13 in Psychology

1 answer 31 views

Which body organ filters the blood in the body and creates urine?

asked Jan 8 in Science

1 answer 78 views

What nest of cells protect the egg as it matures in the ovary?

asked Jan 7 in Science

1 answer 28 views

Cirrus, stratus, and cumulus are the main types of what?

asked Dec 30, 2024 in Science

1 answer 47 views

Layers of placental transfer cells help transport nutrients to the embryos as they develop into what?

asked Dec 27, 2024 in Science

1 answer 33 views

Which stage of development is a period during which apoptosis is widespread and plays a crucial role?

answered Dec 27, 2024 in Science

1 answer 78 views

What is a primary source of the hormone melatonin?

asked Dec 27, 2024 in Science

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