A:该溶液物质的量浓度为10moL/L
B:所得的溶液的体积为22.5L
C:根据题干数据,该溶液物质的量浓度无法求得
D:该溶液中溶质的质量分数因溶液的密度未知而无法求得
计算:212×34÷2.
A. I like this postcard.
B. Yes, I do.
C. It's rainy.
D. Sure.
E. On the left.