铜在自然界存在于多种矿石中,如:矿石名称黄铜矿斑铜矿辉铜矿孔雀石主要成分CuFeS2Cu5FeS4Cu2SCuCO3·Cu(OH)2请回答下列问题:(1)上表所列铜化合物中,铜的质量百分含量最高的是______________。(2)工业上以黄铜矿为原料,采用火法熔炼工艺生产铜。该工艺的中间过程会发生反应:2Cu2O+Cu2S6Cu+SO2↑,反应的氧化剂是________________。(3)SO2尾气直接排放到大气中造成环境污染的后果是_______________;处理该尾气可得到有价值的化学品,写出其中1种酸和1种盐的Many parents were worried that their children too much time playing computer games.
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