The following is a short reading text for senior high school students. New words are highlighted. Work in groups and discuss how you would present the new words in this text. Share your ideas in class.
【简答题】设天平称量误差为±0.2mg。现欲配制浓度均为0.01000mol·L -1 的(coon)2及KHC 8 H 4 O 4 标准溶液各1L,用以标定NaOH溶液。计算需称取(COOH) 2 及KHC 8 H 4 O 4 质量的相对误差各为多少?计算结果说明什么?{M[(COOH) 2 ]=90.038g·mol -1 ,M(KHC 8 H 4 O 4 )=204.22g·mol -1 }
【简答题】设天平称量误差为±0.2mg。现欲配制浓度均为0.01000mol·L -1 的(coon)2及KHC 8 H 4 O 4 标准溶液各1L,用以标定NaOH溶液。计算需称取(COOH) 2 及KHC 8 H 4 O 4 质量的相对误差各为多少?计算结果说明什么?{M[(COOH) 2 ]=90.038g·mol -1 ,M(KHC 8 H 4 O 4 )=204.22g·mol -1 }