现有一块表面部分被氧化为氧化钠的金属钠,其质量为1.77g,投入到1

现有一块表面部分被氧化为氧化钠的金属钠,其质量为1.77g,投入到100g水中产生气体0.05g。试计算:
(1)钠块中钠元素的质量分数;
(2)所得溶液溶质的质量分数;
(3)有多少克金属钠被氧化。

答案


(1)90.96%   

(2)2.75%  

(3)0.46

相关题目

五柳先生传(10分)陶渊明先生不知何许人也,亦不详其姓字
五柳先生传(10分)陶渊明先生不知何许人也,亦不详其姓字,宅边有五柳树,因以为号焉。闲静少言,不慕荣利。好读书,不求甚解;每有会意,便欣
在公有制经济中,按劳分配的对象是 A.社会总产品       B
在公有制经济中,按劳分配的对象是 A.社会总产品       B.个人消费品      C.生活必需品     D.物质总产品
14. It was a _____ evening and I really had a good sleep. A. calm        
14. It was a _____ evening and I really had a good sleep. A. calm                  B. silent              C. quiet                  D. safe and sound
 This article is quite _____ me. There are too many new words.       A. a
 This article is quite _____ me. There are too many new words.       A. above                     B. against       C. upon                    D. beyo
如图在△ABC中AM垂直平分BC,若AB=3.6cm ,则AC=         
如图在△ABC中AM垂直平分BC,若AB=3.6cm ,则AC=         
I ‘m going to buy my daughter another interesting novel, ______ she would like
I ‘m going to buy my daughter another interesting novel, ______ she would like to read.   A. that               B. what            C. it                D. on
——Would you mind giving your advice on how to improve our business managemen
——Would you mind giving your advice on how to improve our business management?     ——if you make ____ most of the equipment, there will be ____ rise in production. A、不填;不填  B
下物质分类组合正确的是  (    )ABCD 强电解质HClFeCl3H3PO4
下物质分类组合正确的是  (    )ABCD 强电解质HClFeCl3H3PO4HClO 弱电解质HFCH3COOHNH3·H2OBa(OH)2 非电解质C2H5OHZnH2OSO3

最新题目