【单选题】共模抑制比 K CMR 是__ ___之比
【单选题】将ag镁铝合金投入到x mL 2mol/L的盐酸中,金属完全溶解后,再加入y mL 1mol/L的氢氧化钠溶液,得到的沉淀量最大,质量为 g。下列说法不正确的是
【判断题】加入盐酸后,电对 Ag + / Ag 的电极电势下降 。
【单选题】将ag镁铝合金投入到x mL 2mol/L的盐酸中,金属完全溶解后,再加入y mL 1mol/L的氢氧化钠溶液,得到的沉淀量最大,质量为(a+1.7)g.下列说法不正确的是( )
A.
镁铝合金与盐酸反应转移电子总数为0.lN A
C.
沉淀是Mg (OH) 2 和Al(OH) 3 的混合物
【单选题】______ his home is the farthest from the school, he is the first one to get to school every day. [ ]
【单选题】What did the man do every Sunday?
A.
He was taken to church three times.
B.
He stayed at home all day.
C.
He played in the street,