【简答题】小题1:I think Sun Yang and Yao Ming are my __________(hero). 小题2:I have some new friends. I like to play with __________(they) after school. 小题3:Mo Yan is the _________(one) Chinese to win the Nobel Pri...
【简答题】用质量分数为36.5%的浓盐酸(密度为1.16 g/cm3)配制成1mol/L的稀盐酸。现实验室仅需要这种盐酸220mL。试回答下列问题: (1)配制稀盐酸时,应选用容量为____________mL的容量瓶; (2)经计算需要______________mL浓盐酸,在量取时宜选用下列量筒中的_______________。 A.5 mL B.10 mL C.25 mL D.50 mL (3)在量...