Compounds with aluminum and silicon are commonly found in the clay fractions of soils derived from what?
- Correct Answer: volcanic ash
- mineral ash
- volatile ash
- ground ash
Explanation: Compounds with aluminum and silicon are commonly found in the clay fractions of soils derived from volcanic ash. One of these compounds is vermiculite, which is formed in reactions caused by exposure to weather. Vermiculite has the following formula: Ca0.7[Si6.6Al1.4]Al4O20(OH)4. (The content of calcium, silicon, and aluminum are not shown as integers because the relative amounts of these elements vary from sample to sample. ) What is the mass percent of each element in this sample of vermiculite?.
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