What is the pH when 30.0 mL of 0.10 M HCOOH solution is titrated with 8.6 mL of 0.20 M NaOH? (Ka = 1.8 x 10^-4) Given that Kb for (CH3)2NH is 5.4\times0-4 at 25C, what is the value of Ka for (CH3)2NH2 at 25 C? What is the Kb for the followin...
The value of Ka for acetylsalicylic acid (aspirin) is 3.00×10−4. What is the value of Kb for its conjugate base, C9H7O4−? Dissociation Constant: The acid dissociation comes into the picture when a solution contains a weak acid, and...
NaOH 40℃ 3min No Change 3%氢氧化钠40℃3 分钟 JIS C 6481 无异常 Chemical Resistance 耐化学性 —— Boiled in trichloroethylene for 3 min JIS C 6481 No Change 无异常三氯乙烯中煮沸3 分钟 No Change 无异常 No Change 无异常 Moisture Absorption 吸水性 % E-24/50+D-24/23 JIS C 6481 ≤2...
准确称取50.00ml牛乳,用0.1200mol/lNaOH溶液滴定,以酚酞作指示剂,滴定至微红终点,共消耗8.00ml。则该牛乳的酸度为()。 A. 18.2 B. 16.8 C. 19.2 D. 17.6 查看完整题目与答案 惠水枫香染的国家级传承人是谁? A. 王阿勇 B. 王月圆 C. 杨光成 D. 杨万仁 查看完整题目与答案 室内照...
Methods:(1)Dividingandbuildingmodelofacuteliverfailureofmice:65maleSPF mousewererandomlydividedintothreegroups,normalcontrolgroup(n=5),modelgroup (n=30)injectedwithLPS/D-gal,PDTCtreatmentgroup(n=30);Everygroupwas dividedintosixsub-groupsbytheorderoftimerandomly(0.5h1h2h4h8h12h).(2) ...
aelectrochemical oxidation in a NaOH-solution, using 200 ml[translate] a多盖被子 Multi-lid quilt[translate] aYou are my favourite, Lixin, 您是我的喜爱,李新,[translate] a燕山南路渤海钻探定向井公司 South Mt. yanshan road Bohai Sea Drilling Directional well Company[translate] ...
C. 8 mol·L-1 NaOH D. 18 mol·L-1 H2SO4 查看完整题目与答案 The execution process of if...else statement is: first calculate the value of . If the value is true, it means that the test condition is met, and the program executes , otherwise executes . A. 正确 B...
Cells were washed with 1 Â PBS and subjected to precipitation with 10% trichloroacetic acid (TCA) (Sigma, Munich, Germany) and then dissolved with 1 N NaOH. The precipitate was collected in vials and thymidine incorporation was determined in liquid scintillation counter (Beckman LS 6000, ...
NaOH 40℃ 3min 3%氢氧化钠 40℃3 分钟 Boiled in trichloroethylene for 3 min 三氯乙烯中煮沸 3 分钟 JIS C 6481 JIS C 6481 Moisture Absorption 吸水性 % E-24/50+D-24/23 JIS C 6481 Specification 规格值 ≥10 No Change 无异常 ≥1.2 ≥8 ≥8 5×109 5×108 1×1010 1×109 1×109 1...
Answer to: Consider the titration of a 28.0 mL sample of 0.175 M CH3NH2 with 0.150 M HBr. The value of Kb for CH3NH2 is 4.4 x 10^-4. Determine the...