Based on the video: Earth's Elements and an Introduction to the Silicate Minerals, what is the percentage of Iron (Fe) make up the composition of the layers that make up the Earth. 13% 35% 15% 30% Based on the video: Earth's Elements and an Introduction to the Silicate Minerals, Granite is an example of a rock containing which of the following? Silicates Carbonates Oxides Sulfides
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Balance the following chemical reactions, which contribute to weathering of the iron-silicate minerals ferrosilite (FeSiO $_{3}$ ), fayalite $\left(\mathrm{Fe}_{2} \mathrm{SiO}_{4}\right),$ and greenalite $\left[\mathrm{Fe}_{3} \mathrm{Si}_{2} \mathrm{O}_{5}(\mathrm{OH})_{4}\right]:$ a. $\operatorname{FeSiO}_{3}(s)+\mathrm{H}_{2} \mathrm{O}(\ell) \rightarrow \mathrm{Fe}_{3} \mathrm{Si}_{2} \mathrm{O}_{5}(\mathrm{OH})_{4}(s)+\mathrm{H}_{4} \mathrm{SiO}_{4}(a q)$. b. $\mathrm{Fe}_{2} \mathrm{SiO}_{4}(s)+\mathrm{CO}_{2}(g)+\mathrm{H}_{2} \mathrm{O}(\ell) \rightarrow$ $\mathrm{FeCO}_{3}(s)+\mathrm{H}_{4} \mathrm{SiO}_{4}(a q)$. c. $\mathrm{Fe}_{3} \mathrm{Si}_{2} \mathrm{O}_{5}(\mathrm{OH})_{4}(s)+\mathrm{CO}_{2}(g)+\mathrm{H}_{2} \mathrm{O}(\ell) \rightarrow$. $\mathrm{FeCO}_{3}(s)+\mathrm{H}_{4} \mathrm{SiO}_{4}(a q)$.
Supreeta N.
Iron in the earth is in the form of iron ore. Common ores include $\mathrm{Fe}_{2} \mathrm{O}_{3}$ (hematite), $\mathrm{Fe}_{3} \mathrm{O}_{4}$ (magnetite), and $\mathrm{FeCO}_{3}$ (siderite). Calculate the mass percent composition of iron for each of these iron ores. Which ore has the highest iron content?
Madhur L.
List the rock-forming minerals. Why are they called rock-forming? Which are silicates? Why are so many of them silicates?
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