(a)
Interpretation:
The molecular formula and charge should be given for the silicate anion.
Concept Introduction:
Silicates: It is frame work based on the linkage of cation cantered coordination polyhedron. The silica tetrahedral, the building block of the silicate minerals
Silicates minerals: All silicates minerals contain some combination of Si and oxygen (O), make up 96% of Earth crust.
Non-silicate minerals: It is indicated by the name they contain no silicon and fall into one of six class of non-silicate. It only 4% of earth crust is made of non-silicates.
(b)
Interpretation:
The complete molecular formula of the mineral has to be given.
Concept introduction:
Silicates: It is frame work based on the linkage of cation cantered coordination polyhedron. The silica tetrahedral, the building block of the silicate minerals
Silicates minerals: All silicates minerals contain some combination of Si and oxygen (O), make up 96% of Earth crust.
Non-silicate minerals: It is indicated by the name they contain no silicon and fall into one of six class of non-silicate. It only 4% of earth crust is made of non-silicates.
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General Chemistry: Atoms First
- The amount of sodium hypochlorite in a bleach solution can be determined by using a given volume of bleach to oxidize excess iodide ion to iodine, because the reaction goes to completion. The amount of iodine produced is then determined by titration with sodium thiosulfate, Na2S2O3, which is oxidized to sodium tetrathionate, Na2S4O6. Potassium iodide was added in excess to 5.00 mL of bleach (density = 1.00 g/mL). This solution, containing the iodine released in the reaction, was titrated with 0.100 M Na2S2O3. If 34.6 mL of sodium thiosulfate was required to reach the endpoint (detected by disappearance of the blue color of the starch iodine complex), what was the mass percentage of NaClO in the bleach?arrow_forwardAn impurity sometimes found in Ca₃(PO₄)₂ is Fe₂O₃, whichis removed during the production of phosphorus as ferrophos-phorus(Fe₂P). (a) Why is this impurity troubling from an eco-nomic standpoint? (b) If 50. metric tons of crude Ca₃(PO₄)₂ contains 2.0% Fe₂O₃ by mass and the overall yield of phospho-rus is 90.%, how many metric tons of P₄ can be isolated?arrow_forward(1) Diamond and graphite are two minerals with identical chemical compositions, pure carbon (C). Diamond is the hardest of all minerals, and graphite is one of the softest. If their compositions are identical, why do they have such profound differences in physical properties? (2) silicon and oxygen together make up nearly 75 percent by weight of the Earth's crust. But silicate minerals make up more than 95 percent of the crust. Explain the apparent discrepancy. (3) If you were given a crystal of diamond and another of quartz, how would you tell which is diamond? (4) Would you expect minerais found on the Moon, Mars, or Venus to be different from those of the Earth's crust? Explain your answer. (5) Quartz is Si02. Why does no mineral exist with the composition Si03?arrow_forward
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