Refer to Figuring Physical Science: Silica Enrichment
Chapter 20, Problem 37(choose chapter or problem)
Refer to Figuring Physical Science: Silica Enrichment inMagma on page 531 to answer the following problem; What are the mass percentages of the oxides MgO, FeO,and SiO2 in pyroxene, MgFeSi2O6? Give your answersin whole numbers. Hint: Use the Periodic Table to find atomic mass units, then express the formula for pyroxeneas a sum of its constituent atoms.(a) How many kilograms of silica are in 225 kg ofpyroxene?(b) If 325 kg of olivine and 225 kg of pyroxene havecrystallized out of the 1000 kg of magma, what is themass percentage of silica in the remaining liquid?
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