Bulk density of mercury?
I know I can easily look this information up online, but that's not the point. I know how to find volumes of the spheres/spherical shells that are the core/mantle, but I don't know how a density calculation can factor in the relative sizes of those.
Asked by Lorretta Kassab 2 years ago.
The uncompressed density of the planet Mercury is estimated to be 5280 kg/m-3. If it consists of a core and mantle with compositions similar to those of the Earth, what is the ratio of core radius to total radius? [Stacey and Davis(Fourth Ed.), Problem 2.2] Take the density of mantle rocks to be 3500 kg/m3 (pyrolite) and the density of the core to be 7900 kg/m3 (iron). State your assumptions clearly. Answered by Ladonna Nguen 2 years ago.
If you are asking whit I think you are asking, this is a weighted average problem. Define the total volume = 1 Then the core volume = x Then the mantle volume = 1-x 5280 is the volume weighted average density, so: 7900x + 3500(1-x) = 5280 Solve for x to get the proportional volume of the core. It should then be relatively trivial geometry using 4/3Pir^3 to get the core radius as a proportion of the total radius from the proportional volumes. Answered by Verla Michand 2 years ago.
What type of mineral is this?
the pyrolite you specified is more of a dull color. These are shiny.
Asked by Stephnie Arietta 2 years ago.
I bought a rock this weekend, which the person on duty sawed in half to reveal a geode. He told me what types of minerals were inside and how this specific one might have formed but now I can't remember what he had said. The rock originated in New Mexico, and inside were quartz crystals with tiny black needle like shiny minerals. I am trying to remember what this mineral was called. I swear he said the word "dork" when he said it, but now I dont remember. Please help! Answered by Leone Tonas 2 years ago.
Black shiny needles could be manganese oxides, of which pyrolusite is one of the more common ones. I agree with the other answerer that "dork" could have been you mishearing "quartz." Answered by Natashia Tribley 2 years ago.
Can we human being eat indian fullers earth tell me what are the harms?
can we human being eat indian fullers earth tell me what are the harms
Asked by Minnie Maccartney 2 years ago.
Well, but why would you want to? First off, the term "Fuller's Earth" is quite nonspecific as to mineral composition, but it usually refers to a non-plastic variety of clay or kaolin that contains aluminum magnesium silicate. It is sometimes synonymous with montmorillonite, kaolin, kaolinite, floridin, bentonite, wilkonite, or halloysite. The toxicological properties have not been investigated fully. While Fuller's earth (aluminum silicate, bentonite) does not appear to be extremely harmful when ingested, it is a serious health hazard when inhaled: crystalline silica causes lung injury and is a possible carcinogen (cancer-producing agent.) Pyrolite is healthier, but not risk-free. These substances have been used in films and photography to produce a dusty appearance. I would not eat it. Answered by Laronda Verunza 2 years ago.