Recent activity by ShannanBalle

1 answer 29 views

Determine the oxidation state of the chromium atom in the compound potassium dichromate (K2Cr2O7).

answered 1 day ago in Inorganic Chemistry

1 answer 61 views

How can X-ray fluorescence spectroscopy be utilized to identify the presence of toxic heavy metals, such as lead and cadmium, in a given sample of soil?

asked 6 days ago in Analytical Chemistry

1 answer 35 views

Calculate the enthalpy change for the adsorption of 2.50 moles of methane gas on a zeolite catalyst supported by alumina, given that the temperature of the system decreases from 298 K to 288 K and the pressure is decreased from 100 atm to 75 atm. The initial and final volumes of the gas are 10.0 L and 8.00 L respectively, and the heat capacity of the system is 25 J/K.

answered Jan 23 in ThermoChemistry

1 answer 45 views

Calculate the bond length between two carbon atoms in ethene (C2H4), given that the distance between the nuclei of the carbon atoms is 1.33 angstroms and the bond angle between them is 121.7 degrees. Use the formula for calculating bond length based on the bond angle and distance between nuclei.

answered Jan 23 in Chemical bonding

1 answer 47 views

What is the molecular formula and the name of the alkane that has seven carbon atoms and forms a straight chain?

answered Jan 21 in Organic Chemistry

1 answer 17 views

What is the role of the amygdala in drug addiction?

answered Jan 20 in Psychology

1 answer 21 views

Why is single-blind research used?

answered Jan 20 in Psychology

1 answer 15 views

Where do psychoanalytic theories come from?

asked Jan 16 in Psychology

1 answer 20 views

What are the three components of Freud's structural model?

asked Jan 15 in Psychology

1 answer 22 views

What does a thermometer measure?

answered Jan 6 in Science

1 answer 21 views

Trichomoniasis is cause by what type of pathogen?

asked Jan 2 in Science

1 answer 23 views

For many decades, scientists have known that atoms consist of electrons and other particles called protons and?

answered Dec 30, 2024 in Science

1 answer 23 views

Anaerobic prokaryotes can live without what compound in their environment (it's a compound that people do need to live)?

asked Dec 28, 2024 in Science

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