pH of a buffer and buffer capacity Example: For a buffer solution consisting of 0. 1 M acetic acid and o1M sodium acetate the ph of the solution is 4.75 HAc= i If an amount of hydrochloric acid equivalent to 10% of the acetate present, is added to the buffer, what is the new pH of the solution?

1. int m=5,y=2; y+=y-=m*=y; 其中 y= 2. int s=6; s%2+(s+1)%2 的值为

Some van der waals constants m3/mole2) (m/mole)

A matrix is a rectangular array of numbers. A matrix with m rows and n columns is called an m × n matrix. The plural of matrix is matrices. A matrix with the same number of rows as columns is called equal if they have the same number of rows and the same number of columns and the corresponding entries in every position are equal

G1- half-silvered mirror半镀银镜 G2 compensation mirror补偿镜 M1、M2 e reflecting mirror)射镜E E- eyes and telescope眼和望远镜

一、卡诺图化简法直观方便，过程简单明了，但只适合于变量数<=4的函数。 二、Q-M(Quine-McCluskey) 法和卡诺图法的化简思路是一致的:两相邻最小项可以合并,消去一个变量. [1952，1956]

概述 ISO标准标明,纸的定量小于250g/m2的被 认为是纸,定量大于250g/m2的可称为纸板 。世界也有些地方按厚度、特性和用途来 区分纸和纸板

弯曲菌属是一类氧化酶阳性、动力阳性、革 阴性弯曲、微需氧的细菌 生物学性状:弯曲菌菌体轻度弯曲似逗点 状,长15~5μm,宽0.2~0.8μm。菌体 端或两端有鞭毛,运动活泼,在暗视 野镜下观察似飞蝇。有荚膜,不形成芽胞

1.形成键的络合物 以八面体络合物ML6(M第一系列 过渡金属离子)为例,M的价层轨道 有9个:

NanoView-I 型扫描隧道显微镜 研制： 上海交通大学物理实验中心 上海纳科技术发展有限公司 主要技术参数： 扫描范围：5m×5 m