Coaching: Day 1 Concepts Flashcards
Iodine vapor forms iodine crystals when it touches a cold surface. What is the reverse of the process being described?
sublimation
The person’s sense of smell and taste depend on specific biochemic receptors present in a person’s nose and mouth. In 2004, a Nobel Prize was given to the researchers who established this fact and identified the type of organic compound associated with the sense of smell and taste. The chemical identified was;
rhodopsin
The distance of the Earth to the most remote normal galaxy is calculated to be:
2x10^22 m
Determine the oxidation number of Chromium in CrF6 3+.
3
Fatty acid such as lauric acid and palmitic acid and oleic acid are long unbranched carboxylic acids consisting of 12 to 20 carbon atoms. Which type of fatty acid should people avoid ingesting, saturated or unsaturated and why?
Saturated, because the risk of cardiovascular disease is increased
A voltaic cell is represented by the following equation:
Fe(s) + Zn^2+ (aq) → Fe^2+(aq) + Zn(s)
Which electrode is the anode and which electrode is the cathode?
Anode = Fe and Cathode = Zn
What other particle is formed in the fusion of two protons to yield deuterium?
positron
Which isotope is produced when Polonium-216 decays by emitting an alpha particle followed by two beta particles?
Polonium-212
Process of breaking down a large isotope into smaller isotopes.
nuclear fission
In a dehydration reaction where water is lost, an organic compound C3H8O reacts with concentrated phosphoric acid and a product is formed. This product rapidly decolorizes a solution of bromine in tetrachloromethane. What is this product?
Propene
An adiabatic process is one in which the system under investigation is thermally isolated so that there is no exchange of heat with the surroundings. Thus, the work done on a closed system in an adiabatic process is _____.
Equal to the increase in internal energy of the system
State Le Chatelier’s Principle.
Le Chatelier’s principle states that when a stress is placed on a system in equilibrium, the system tends to change in a way that relieves the stress.
The ion that would be isoelectronic with the noble gas xenon is:
Iodine
If radon-222 disintegrates to a stable condition by emitting three alpha emissions and two beta emission, determine the stable nucleus formed.
210Pb82
These compounds are formed by the reaction of acids with alcohols.
Esters
To which subatomic particle does each statement refer to a.) has a positive charge; b.) is found outside of the nucleus; c.) has the smallest mass; d.) has a negative charge?
proton, electron, electron, and
electron
What is the Clapeyron Equation?
It postulates that if the temperature and pressure are both change in such a way as to keep the chemical potentials of two phases equal to each other, the rates of change are given by the equation.
Which would make more efficient cold compress, ethanol or methanol?
Methanol
As a result of the Aykhal Crystal Denotation in 1974 (in the former Soviet Union), cesium-137 was measured (in 1993) in the soil concentration of 2x104 Bq/kg soil. If the background concentration of 137Cs is 0.5 Bq/kg soil, how many years will it take before the concentration of 137Cs reaches background levels? The decay of radionuclide occurs by a first-order reaction. Half-life is 30 years.
459 years
Name the major physiologically active substances that comes from: bark of the willow tree, the pituitary gland, the sap of the poppy and the belladenna plant.
Salicin, beta-endomorphin, opium, atropine
