問題詳情
36 Pure mercury can be mined. Most often it is found in rust-colored rocks. To move out the mercury, the rocksare crushed and heated, while the vapor is caught and cooled until it becomes a silvery liquid.How can we take the mercury from the rocks?
(A) by hand
(B) by heat
(C) by silver
(D) by liquid
參考答案
答案：B
難度：簡單0.714681
統計：A(17),B(258),C(23),D(42),E(0)
用户評論
【用戶】藝幻
【年級】大一下
【評論內容】純汞可開採。大多數情況下它是在鐵鏽色的岩石中發現的。取出汞，岩石破碎，加熱，而蒸汽被捕獲並冷卻，直到它變成一個銀色的液體。我們怎樣才能把汞從岩石？[google 翻譯]
【用戶】123
【年級】高三下
【評論內容】mercury 水銀rust-colored 鐵鏽色vapor 蒸氣