1.SHAPE Kuonekwa sesimbi, kune pepa risina kukwana, rakaoma uye rinoputika, rumwe rutivi rwakajeka, rumwe rutivi rwakashama, sirivha-chena kusvika kune ruvara rutsvuku, rwakagadzirwa kuva upfu isirivha-grey;zviri nyore kuita oxidise mumhepo, kana wasangana ne dilute acid inonyungudika uye kutsiva iyo hydrogen, yakakwira zvishoma kupfuura iyo ...
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