称取NaCl试样0.1248g,以K 2 Cr O 4 为指示剂,用 0.1050 mol /L AgN O 3 滴定至终点,用去 20.08ml,计算NaCl的质量分数 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace> 相关知识点: 试题来源: 解析 0.9873 反馈 收藏 ...
Product Name Specification White Peony Extract Paeoniflorin 10%, 20%, 50%, 98% HPLC White Willow Bark Extract Salicin 15%, 25%, 30%, 50%, 80%, 98% HPLC Milk Thistle Extract Silymarin by aceton 80% UV Silybin+isosilybin 30%/ silybin 30% HPLC Silymarin by ethylacetate 80...
( 1997 ), Production and decay of ClNO 2 , from the reaction of gaseous N 2 O 5 with NaCl solution: Bulk and aerosol experiments , J. Geophys. Res. , 102 , 3795 – 3804 , doi: 10.1029/96JD03057 .Behnke, W., George, C., Scheer, V. and Zetzsch, C. 1997 . Production and...
uglifyjs ./tenvoy.js -o ./tenvoy.min.js -c -m --source-map "filename='./tenvoy.min.js.map',url='tenvoy.min.js.map'" uglifyjs ./node/tenvoy.js -o ./node/tenvoy.min.js -c -m --source-map "filename='./node/tenvoy.min.js.map',url='tenvoy.min.js.map'" Dependencies...
D-GLUCOSAMINE SULFATE.2NACL Basic informationMore.. Product Name:D-GLUCOSAMINE SULFATE.2NACL Synonyms: CAS: MF: MW:0 EINECS: Mol File:Mol File Information Error Report Your Email: Browse by provinceD-GLUCOSAMINE SULFATE.2NACLSuppliersGlobal suppliers ...
故选D.?xml:namespace>故答案为:d结果一 题目 (2019届北师大附中月考,6)已知碘盐的主要成分是NaCl和KIO3,KIO3与NaHSO3能发生反应:2KIO3+6NaHSO3 2KI+3Na2SO4+3H2SO4,则下列说法中不正确的是( ) A. KIO3中I的化合价是+5 B. 反应中的五种物质都是强电解质 C. KIO3作氧化剂,发生还原反应 D. 23Na...
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有如下程序: # include<iostream> using namespace std; class Publication{//出版物类 char name[30]; public: Publication(char*name="未知名称"){ ～strcpy(this->name,name); } const char*getName()const{return nam... A. 未知类型:未知名称 B. 未知类型:精彩人生 C. 书:未知名称 D. 书:...
using namespace std; int main() { long long n; long long a[20]; while(scanf("%lld",&n)!=EOF) { memset(a,0,sizeof(a)); a[0]=n/2; a[1]=n/3; a[2]=n/5; a[3]=n/7; a[4]=n/(2*3); a[5]=n/(2*5); ...
下试剂不能一次性鉴别稀HCl、NaCl溶液、Ca(OH) 2 溶液的是 A．紫色石蕊 B．无色酚酞 C．PH试纸 D．Na 2 C0 3 B 分析：A、根据紫色石蕊在酸碱盐中的显色不同进行分析；B、根据酚酞在酸性和中性的溶液中都不变色进行分析；C、根据三种溶液的pH不同进行分析；D、根据碳酸钠和三...