A yield of 88% for TMH can be obtained by using the optimized synthetic conditions as follows: molar ratio of formaldehyde to octylaldehyde 4.5: 1.0, molar ratio of sodium hydroxide to octylaldehyde 1.4: 1.0, aldol condensation temperature 35℃ and time 240min Cannizzaro reaction temperature 55℃ and time 180min.

結果表明又黄又爽的黄色视频，優(yōu)化的合成三羥甲基庚烷的反應條件是，n／n=4.5欧美精品第欧美第12页，n/n=1.4国产精品特级毛片一区二区在线，羥醛縮合反應溫度和時間分別為35℃和240min，康尼扎羅反應溫度和時間分別為55℃和180min欧美特黄午夜视频，摩爾產率可達88%欧美自拍偷拍精品。

The factors which mostly affect the quality and output of the product including molar proportion of reagents, reaction temperature, alkaline concentration and reaction time are analyzed. After orthogonal experiment, it is concluded that the optimized reaction condition is that acetone and furfural are charged with equal molar quantities at 40 with sodium hydroxide (0.10 mol/L) and the operation time 5 h.

通過對影響亞糠基丙酮質量和收率的主要因素原料配比、反應溫度男女视频在线免费看、堿濃度日本系列JULIA在线播放、反應時間等單因素實驗，探索出合成亞糠基丙酮的優(yōu)化反應條件為：原料配比n：n=1.0：1.0精品首页、反應溫度40℃99色免费、氫氧化鈉溶液濃度為0.01 mol/L亚洲日本亚洲国内精品自在自线、反應時間5h。

It was concluded that no aging time was the most beneficial to form colloid, when molar ratio of phosphoric acid to antimony was in the range from 0.8 to 1.0 and 1.0 to 1.3, the particle sizes of sol with the concentration of 10 % and 15 % antimony pentoxide by weight are both smaller, and with the molar ratio of 1.0, the average particle sizes are (36±5.6)nm nm and (164±32)nm respectively.

結果表明：氧化銻混合物不進行陳化對膠體五氧化二銻的形成最有利一级做一级a做片性视频无遮挡；磷酸與銻的摩爾比分別為0.8～1.0和1.0～1.3時亚洲欧美一区日韩一区a国产传媒，10%和15%的膠體五氧化二銻膠粒粒徑較小，當摩爾比為1.0時插女人视频，粒徑分別為(36±5.6)nm和(164±32)nm色色色wang。

In addition, the constant-volume combustion heat of MPC was determined as -25432.72 J·g~(-1) by a oxygen bomb calorimeter at 298.15 K, and its standard molar combustion enthalpy and standard molar enthalpy of formation were calculated as -3868.92 kJ·mol~(-1) and -422.33 kJ·mol~(-1), respectively.

同時本文測定了MPC的恒容燃燒熱為-25432.72 J·g~(-1)，并計算出MPC的標準摩爾燃燒焓為-3868.92 kJ·mol~(-1)及標準摩爾生成焓為-422.33 kJ·mol~(-1)欧美精品黑人白妞大战。

Weak electrolyte ionization degrees can be approximately obtained by the conductivity ratio, namely:α= ma0, mam, and 0, m respectively, the molar electrolyte conductivity and limiting molar conductance (ie, fully ionized after a solution of the conductivity).

弱電解質的電離度可近似地由電導比求得亚洲,日韩,性爱，即：α＝ma0，mam和0黄色黄片一个人www，m分別為電解質的摩爾電導和極限摩爾電導（即完全 a電離后溶液的電導）欧美日韩精品一二。

Weak electrolyte ; molar conductivity ; limit molar conductivity ; the Law of the Independence Migration of Ions

弱電解質；摩爾電導率国产自慰资源；無限稀釋摩爾電導率亚洲美女日逼A片；離子獨立運動定律

The ion transfer number is introduced in the formula describing the relationship between ionic limiting molar conductivity and ionic concentration based on mode coupling theory. A series of calculated for the ionic limiting molar conductivity are present.

在模式耦合理論推導的低濃度時離子摩爾電導率與離子濃度的關系式中，引入離子遷移數欧美嘿咻嘿咻视频播放，提出了求離子極限摩爾電導率的新方法2020亚洲一级兔费A片。

The changes of the conductivity, molar conductivity, activity coefficient and relative partial molar free energy of LiCl with concentration and temperature of the solution were discussed.

應用電導率儀在288~308K溫度范圍內測定了LiCl在純有機溶劑中的電導率；利用公式計算了LiCl的摩爾電導率色色五；按Kohlrausch經驗公式免费无码高清黄色网址，使用Origin軟件進行線性擬合，作圖外推求得LiCl在異丙醇中的無限稀釋摩爾電導率λ0值97青青操在线；并討論了LiCl在異丙醉中的電導率国产一区在线免费观看、摩爾電導率、活度系數和相對偏摩爾自由能隨溶液濃度和溫度的變化關系及其溫度對LiCl溶液無限稀釋摩爾電導率的影響国产99久久久国产精品电影免费。

Determined electric conductivity of Rare Earths salt ErCl 3www三级片、DyCl 3、NdCl 3 and YCl 3 in H 2O at 293K, using formula calculated the molar conductivity of Rare Earths salt in H 2O , and discussed the effect of the electric conductivity and the molar conductivity of Rare Earths salt in H 2O with concentration at 293

天然Ⅰa型金剛石在垂直于( 10 0 )狠起插，( 110 )和( 111)三個方向上定向顯微紅外光譜的定量比較分析表明：水欧美性视频在线、片晶和C—C鍵在以上三個方向上所測得的濃度是不相同的。

Methods Firstly, the conductivity of DyCl3 in isopropanol was determined at 303.15 K to 313.15 K to calculate the molar conductivity of DyCl3 secondly, Kohlrausch formula and Origin software were used to make the diagram of linear fitting, finally the diagram was pushed outside and the molar conductivity at infinite dilution λ0/(Scm^2mol^(-1) of DyCl3 in isopropanol was calculated, and the influence of the temperature on λ0/Scm^2mol^(-1 of DyCl3 electrolyte solution was investigated.

根據實驗在303.15~313.15K溫度范圍內測定DyCl3在異丙醇溶劑中的電導率国产亚洲AⅤ人片在线观看，求得DyCl3的摩爾電導率值性爱在线破解版黄色网站，應用Kohl-rausch經驗規(guī)則，使用Origin軟件進行線性擬合偷拍偷窥一区二区综合，作圖外推求得DyCl3在異丙醇中的無限稀釋摩爾電導率λ0/S平方公分mol^(-1值亚洲中文字字幕精品乱码，并討論DyCl3在異丙醇中的λ0/S平方公分mol^