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 … WebIn a lab experiment monitoring the change in concentration of a reddish brown substance, FeNCS2+, a wavelength of 455 nm is used. a. Does this wavelength agree with your conclusions about beam color, solution color, and absorbance above? Why or why not? b. What other wavelengths might you consider using for FENCS2+ spectroscopy?
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WebMar 7, 2024 · Earwax is a normal, naturally occurring substance that helps your ear stay healthy. It can be shades of yellow, white, brown, and even black. It can be soft, hard, or flaky. The color depends on ... WebThe reddish-brown substance is different from the pipe substance and the fertilizer. The reddish-brown substance is a different color than the fertilizer, which is white, and the … mining laser for prospector
Chemical Reaction of aluminum foil in CuCl2 solution
WebFeb 7, 2024 · I happen to meet a fine red-brown powder in recovering sometimes. It can be found as a sub layer on some gold plated electronics like fingers, also (I think) it is the … WebIn a lab experiment monitoring the change in concentration of a reddish-brown substance, FeNCS2+, a wavelength of 455 nm is used. Is this wavelength appropriate to use? What … WebIron tends to add a rusty, reddish-brown (or sometimes yellow) color to water. If the color is more black than red, your water might contain a combination of iron and manganese. Both of these metals can cause staining of plumbing fixtures or laundry, but they are not known to cause health problems. Learn more: Water Color mining lands ontario