Cinnabar, (or Cinnabarite) HgS is the common ore of mercury. Because of its merc

Question

Cinnabar, (or Cinnabarite) HgS is the common ore of mercury. Because of its mercury content, cinnabar can be toxic to human beings. Alchemists produced elemental mercury by roasting the mercury-containing ore cinnabar (HgS) in air: HgS(s)+02(g) Hg()+SO2(g) The volatility and toxicity of mercury make this a hazardous procedurè which likely shortened the life span of many alchemists. Given 100 g of cinnabar, how many grams of elemental mercury can be produced from this reaction? + 32.o66 233.3 2?3.3! 85.48e Hy

Explanation / Answer

HgS + O2 -----------------> Hg + SO2

233.66g 200.59g

100 g ?

233.66 g HgS -----------------> 200.59 g Hg

100 g HgS ----------------> x g Hg

x = 200.59 x 100 / 233.66

x = 85.85 g Hg

elemental mercury = 85.85 g

note : 386.2 g Hg is wrong answer . what we have done it is correct . you did also correct . report this to your sir who gave this question to you

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