18x 9gx=28g,即加入的铁粉为28g。8.0.3 mol氯气与足量的金属M反应,生成0.2 mol MCln,则n等于( ) A. 1 B. 2 C. 3 D. 4 相关知识点: 试题来源: 解析 C.3 解析:根据氯原子守恒,可知0.3molCl2与0.2molMCln均含0.6molCl。反馈 收藏
PROBLEM TO BE SOLVED: To provide a processing mechanism which automatically crops or segments each fingerprint image upon a ten-print card, in a computer processing system that crops or segments an appropriate fingerprint region from a ten-print card, reduces print placement errors or finger positio...