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The rules remain the same: 1. Please hide your replies; editing after posting is invalid! Delete directly without hiding! 2. Hiding method: http://bbs.hcbbs.com/thread-492556-1-1.html 3. There is a reward for participation; those who answer correctly receive 5 wealth points. Topic for this issue: What is the purpose of conducting blank experiments in analysis? A. To improve precision B. To improve accuracy C. To eliminate systematic errors D. To eliminate random errors E. To eliminate gross errors. Answer to the previous issue: In a typical laboratory, dilute acid solutions are stored in __glass bottles__, while concentrated alkali solutions are stored in __plastic containers__. AgNO3 and I2 solutions should be stored in __brown glass bottles___.
B. Improve accuracy C. Eliminate systematic errors
Reply 1# *ngguanglueguo BD
Reply 1# *ngguanglueguo BC
Reply 1# *ngguanglueguo B. Improve accuracy C. Eliminate systematic errors
B. Improve accuracy C. Eliminate systematic errors
Reply 1# *ngguanglueguo C