Recent activity by DeenaGay9005

1 answer 50 views

What is the unidentified compound present in a given sample, and what is its molecular weight, using mass spectrometry?

asked 5 days ago in Analytical Chemistry

1 answer 40 views

Assuming that the student has knowledge about the harmonic oscillator model, the problem could be:Calculate the molecular vibrational frequencies and corresponding infrared spectra of a carbon monoxide (CO) molecule using the harmonic oscillator model. Given the following bond lengths and force constants:- Bond length of the CO bond in the ground state: 1.128 angstroms- Force constant of the CO bond in the ground state: 1880 N/m

answered Jan 22 in Quantum Chemistry

1 answer 68 views

A chemistry student wants to determine the enthalpy change of a chemical reaction. They have 25 g of sodium hydroxide and want to mix it with 50 mL of 1.0 M hydrochloric acid. What is the maximum temperature change they can expect to see, assuming constant pressure and perfect heat transfer, and what is the enthalpy change of the reaction?

asked Jan 22 in Physical Chemistry

1 answer 53 views

When assessing the external validity of an experiment, what is being scrutinised?

asked Jan 16 in Psychology

1 answer 21 views

What is the dual-coding hypothesis?

answered Jan 15 in Psychology

1 answer 54 views

What is the difference between REM and non-REM sleep?

answered Jan 14 in Psychology

1 answer 6 views

What type of map projection is used for small areas to avoid distortion?

answered Jan 8 in Science

1 answer 32 views

What is the term for materials that have been left behind by organisms that once lived?

answered Jan 7 in Science

1 answer 40 views

What is the order and family of a meat-eating cat like a tiger?

answered Jan 7 in Science

1 answer 58 views

What is the best room in the home to start saving water?

asked Jan 6 in Science

1 answer 27 views

What illnesses are caused by damage to the alveoli of the lungs?

answered Jan 6 in Science

1 answer 47 views

The three types of mammals are characterized by their method of what?

answered Jan 2 in Science

1 answer 41 views

Materials that are good conductors of thermal energy are called?

answered Dec 31, 2024 in Science

1 answer 20 views

In some parts of the world, too much of the sun's harmful uv radiation gets through because of a hole in what layer?

asked Dec 31, 2024 in Science

1 answer 48 views

Darwin coined what term to refer to an organism’s relative ability to survive and produce fertile offspring?

answered Dec 30, 2024 in Science

1 answer 19 views

In living systems, diffusion of substances into and out of cells is mediated by the what membrane?

asked Dec 28, 2024 in Science

...