A . 0.3125%
B . 0.312%
C . 0.31%
[单选题]称量法测定黄铁矿中硫的含量,称取样品0.3853g,下列分析结果合理的是()。A . 36%B . 36.4%C . 36.41%D . 36.410%
[多选题] 测定某铁矿石中硫的含量,称取0.2952g,下列分析结果合理的是()。A . B .0.0482mol/LC .3.241mg/LD .9613.2ppm
[单选题]测定某铁矿石中硫的含量,称取0.2952g,下列分析结果合理的是()A .32%B .32.4%C .32.42%D .32.420%
[单选题]甲、乙、丙三人同时分析某矿物中硫含量.每次均取样3.5g,分析结果报告为:甲—0.041%,0.042%;乙—0.0419%,0.0421%;丙—0.
[单选题]甲、乙、丙三人同时分析某矿物中硫含量.每次均取样3.5g,分析结果报告为:甲—0.041%,0.042%;乙—0.0419%,0.0421%;丙—0.
[单选题]称量法测定黄铁矿中硫的含量,称取样品0.3853g,下列结果合理的是( )。A. 36%B.36.41%C.36.4%D.36.4131%
[单选题]测定煤中含硫量时,规定称样量为3g精确至0.1g,则下列哪组数据表示结果更合理()。A .0.042%B .0.0420%C .0.04198%D .0.04%
[问答题] 分析煤中含硫量时,称样为3.5g,两次测得结果(S%):甲为0.042%和0.041%,乙为0.04201%和0.04199%,应采用谁的结果?
[单选题]碳硫测定仪中吸水剂失效,则硫的分析结果()。A .偏高B .偏低C .不变
[单选题]一般分析煤样不少于()gA .900B .700C .100D .60