WebOscar mixed two samples together: a brown solid that melts at about 1,300°C and a colorless liquid that melts at about 20°C. He analyzed the results and found two ending substances. One of the ending substances melts at about 250°C. This ending substance is made up of the repeating group of atoms shown above. WebChemistry questions and answers. Question 4 (20 points) Saved Why does the heating, cooling and weighing process have to be repeated twice or more? Every measurement should be repeated at least 3 times. To be sure the mass and volume match to be sure it is completely dry none of these Question 5 (20 points) What is reddish brown substance …
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WebOct 8, 2024 · Answer From Michael F. Picco, M.D. Stool comes in a range of colors. All shades of brown and even green are considered normal. Only rarely does stool color indicate a potentially serious intestinal condition. Stool color is generally influenced by what you eat as well as by the amount of bile — a yellow-green fluid that digests fats — in ... WebIn a lab experiment monitoring the change in concentration of a reddish brown substance, FeNCS2+, a wavelength of 455 nm is used. absorbance above? Why or why not? b. What other wavelengths might you consider using for FeNCS2+ spectroscopy? R'S LAW LAB This problem has been solved! fca proving ground balocco
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WebMar 3, 2024 · The pressure, P, the temperature, T, and the volume, V, of an ideal gas, are related by a simple formula called the ideal gas law: P×V = n×R×T. where P is the gas … WebMay 12, 2024 · Green. Green phlegm indicates a widespread and robust immune response. The white blood cells, germs, and other cells and proteins that the body produces during the immune response give the phlegm ... WebApr 12, 2024 · Rusting is the phenomenon of a reddish-brown coating forming on the surface of iron due to the action of wet air, and the reddish-brown coating is referred to as rust. Simply said, rust is a red-brown flaky substance that forms when an iron object is exposed to wet air for an extended period of time. Rusting is the term for this phenomenon. fcaps functionality