(20分)电子工业中常用一定浓度的FeCl3溶液腐蚀敷有铜箔的绝缘板,制成印刷电路板。有关反应为:2FeCl3+Cu=2FeCl2+CuCl2现将一块敷有铜箔的绝缘板浸入8.00×102mL某FeCl3溶液A中,一段时间后,将该线路板取出,向所得溶液B中加入铁粉m g,充分反应后剩余固体n g,将固体滤出并从滤液C(忽略反应前后溶液的体积变化)中取出20mL,向其中滴入3.00 mol•L-1AgNO3溶液60mL 时,溶液中的Cl-恰好完全沉淀。请计算:(1) 溶液A中FeCl3的物质的量浓度。(2)
Cedric was so angry that he kicked a chair and broke one of its legs, _________ was rather funny.
[ ]
A.as
B.it
C.that
D.which