Why does my Patton-Reeder indicator immediately turn blue? (Ca2 conc. ) The discussion revolves around the use of the Patton-Reeder (PR) indicator in measuring calcium ion concentration using the EDTA method Participants explore the effects of pH, the presence of other ions, and the preparation of the calcium solution, with a focus on troubleshooting unexpected color changes in the indicator One participant notes that the PR indicator turns dark blue immediately
Question about long-term storage of blue sphere silica gel The discussion revolves around the long-term storage of blue sphere silica gel, particularly focusing on whether the silica gel, when saturated and turned pink, will break and release water or liquid inside a shoebox Participants explore the chemical properties of silica gel and its behavior under various conditions, including humidity and temperature Some participants express concern that
Why does a Walrus Blush? | Geophysical Institute The skin of walruses becomes pallid when it is exposed to cold air or water and changes to pink when exposed to warmer ambient temperatures This color change may indicate that the circulatory output to the skin is altered to control their total body heat loss
Ice Worms | Geophysical Institute Ice worms eat airborne pollen grains, fern spores and the red algae that lives in snow and sometimes colors it pink Unable to exist at temperatures much below freezing, ice worms must remain in temperate glaciers
Understanding FTIR Peaks of PO4 Compounds • Physics Forums The discussion focuses on the interpretation of FTIR (Fourier Transform Infrared Spectroscopy) peaks for PO4 (phosphate) compounds It establishes that multiple peaks at different wavelengths arise from various vibrational modes of the molecule, including stretching and bending vibrations Specifically, the modes v1, v3, and v4 correspond to distinct types of molecular vibrations, such as
Pink salmon — too much of a good thing? | Geophysical Institute Pink salmon born in hatcheries, where professionals harvest eggs from wild salmon and rear them in captivity before releasing them in the ocean, have doubled in numbers since 1990 Russians have pink salmon hatcheries that increase numbers in the North Pacific and Bering Sea Alaskans run hatcheries in Valdez and other places in Prince William
Why Does the Pink Color in a Titration Fade Over Time? The discussion revolves around the fading of the pink color produced by phenolphthalein during a titration over time Participants explore various chemical processes and factors that may contribute to this phenomenon, including equilibrium shifts, hydrolysis, and the absorption of carbon dioxide
Great Comets, Great Floods | Geophysical Institute This column's topic was dictated by a concatenation of coincidence--otherwise, known as fate, or luck Consider: in mid-July 1994, much of the state of Georgia was submerged under the rainy aftermath of a tropical storm, while parts of Alaska's Interior were drying out after their own mini-deluge Meanwhile, the shards of a big comet descended into the atmosphere of Jupiter, there generating
Slugs ooze over Southeast Alaska | Geophysical Institute Pink salmon squirting like greased torpedoes through clear lagoons The pop of kelp air sacks when stepped on at low tide A salty tang in the air But maybe the most striking thing was oozing along a wet trail by our boots: A slug The length of a child’s pinkie finger, the slug had four antennae protruding from its face, but no eyes