实验室要配制100mL 2mol/L NaCl溶液，请回答下列问题
（1）制过程中需要使用的主要玻璃仪器包括烧杯、玻璃棒、胶头滴管、量筒和______．
（2）用托盘天平称取氯化钠固体，其质量为______ g．
（3）若定容时俯视容量瓶刻度线，会造成所配溶液的物质的量浓度______（偏大、偏小或无影响）．
（1）实验操作的步骤：计算、称量、溶解、移液、洗涤移液、定容、摇匀等操作，该实验中需要用天平称量、用药匙取药品，烧杯溶解药品，需要玻璃棒搅拌和引流，需要100mL容量瓶配制溶液，需要胶头滴管定容，
故答案为：100mL容量瓶；
（2）需要氯化钠的质量=2mol/L×0.1L×58.5g=11.7g，
故答案为：11.7；
（3）定容时俯视容量瓶刻度线，液面在刻度线下方，溶液的体积偏小，结合c=
可知，所配溶液的浓度偏大，n V
故答案为：偏大．
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