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Grade 12th pass9 grade science

25. Cinnabar (HgS) is a prominent ore of mercury. How many grams of mercury are present in 225 g of pure HgS? Molar mass of Hg and S are 200.6 g mol–1 and 32 g mol–1 respectively.

Profile image of Harshit Singh
5 Years agoGrade 12th pass
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1 Answer

Profile image of Pawan Prajapati
5 Years ago
Molar mass of HgS = 200.6 + 32 = 232.6 g mol–1 Mass of Hg in 232.6 g of HgS = 200.6 g Mass of Hg in 225 g of HgS = 200.6 # 225 = 194.04 g