一道生物题如果在装有H2O2和过氧化氢酶的试管中收集到的有关气体为500mL(标况),那么需要3%H2O2溶液多少克求计算过程_作业帮
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一道生物题如果在装有H2O2和过氧化氢酶的试管中收集到的有关气体为500mL(标况),那么需要3%H2O2溶液多少克求计算过程
一道生物题如果在装有H2O2和过氧化氢酶的试管中收集到的有关气体为500mL(标况),那么需要3%H2O2溶液多少克求计算过程
H2O2在酶的作用下会分解出氧气，方程式为 2 H2O2 = 2H2O + O2；500mL氧气通过公式换算成摩尔数然后再利用方程式算出需要多少摩尔的H2O2，再换算成质量，然后除以3%，就得到需要溶液的质量了。科学仪器价格_百度文库
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量筒刷/500ml大号猪毛 试管刷 烧瓶刷 容量瓶刷 试剂瓶刷 量杯刷
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&&名称: 量筒刷，猪毛刷，实验室毛刷，可开票& 实验室耗材参考尺寸（所有的刷子都是手工制作的，尺寸有一定误差非绝对标准，介意的亲请慎拍）：量筒刷500ml（猪毛）：总长度740mm，毛刷长度195mm，毛刷直径28mm，重量24g&&&&&&&&P style=&PADDING-RIGHT: 0 PADDING-LEFT: 0 PADDING-BOTTOM: 0 MARGIN: 1.12em 0 WORD-SPACING: 0 FONT: 14px 21.0px tahoma arial 宋体 sans- TEXT-TRANSFORM: COLOR: #404040; TEXT-INDENT: 0 PADDING-TOP: 0 WHITE-SPACE: LETTER-SPACING: BACKGROUND-COLOR: # orphans: 2; widows: 2; webkit-text-size-adjust: webkit-text-stroke-width: 0.0px&&&&/P&&P&&SPAN style=&DISPLAY: FLOAT: WORD-SPACING: 0 FONT: x-large 36.0px tahoma arial 宋体 sans- TEXT-TRANSFORM: COLOR: #0000 TEXT-INDENT: 0 WHITE-SPACE: LETTER-SPACING: BACKGROUND-COLOR: # orphans: 2; widows: 2; webkit-text-size-adjust: webkit-text-stroke-width: 0.0px&&&STRONG&&IMG src=&& align=middle&&/STRONG&&/SPAN&&/P&&P&&SPAN style=&DISPLAY: FLOAT: WORD-SPACING: 0 FONT: x-large 36.0px tahoma arial 宋体 sans- TEXT-TRANSFORM: COLOR: #0000 TEXT-INDENT: 0 WHITE-SPACE: LETTER-SPACING: BACKGROUND-COLOR: # orphans: 2; widows: 2; webkit-text-size-adjust: webkit-text-stroke-width: 0.0px&&&STRONG&&/STRONG&&/SPAN&&&/P&&P&&SPAN style=&DISPLAY: FLOAT: WORD-SPACING: 0 FONT: x-large 36.0px tahoma arial 宋体 sans- TEXT-TRANSFORM: COLOR: #0000 TEXT-INDENT: 0 WHITE-SPACE: LETTER-SPACING: BACKGROUND-COLOR: # orphans: 2; widows: 2; webkit-text-size-adjust: webkit-text-stroke-width: 0.0px&&&STRONG&名称: 量筒刷，猪毛刷，实验室毛刷，可开票& 实验室耗材&/STRONG&&/SPAN&&/P&&SPAN style=&DISPLAY: FLOAT: WORD-SPACING: 0 FONT: x-large 36.0px tahoma arial 宋体 sans- TEXT-TRANSFORM: COLOR: #0000 TEXT-INDENT: 0 WHITE-SPACE: LETTER-SPACING: BACKGROUND-COLOR: # orphans: 2; widows: 2; webkit-text-size-adjust: webkit-text-stroke-width: 0.0px&&&P&&SPAN style=&DISPLAY: FLOAT: WORD-SPACING: 0 FONT: x-large 36.0px tahoma arial 宋体 sans- TEXT-TRANSFORM: COLOR: #0000 TEXT-INDENT: 0 WHITE-SPACE: LETTER-SPACING: BACKGROUND-COLOR: # orphans: 2; widows: 2; webkit-text-size-adjust: webkit-text-stroke-width: 0.0px&&&SPAN style=&DISPLAY: FLOAT: WORD-SPACING: 0 FONT: x-large 36.0px tahoma arial 宋体 sans- TEXT-TRANSFORM: COLOR: #0000 TEXT-INDENT: 0 WHITE-SPACE: LETTER-SPACING: BACKGROUND-COLOR: # orphans: 2; widows: 2; webkit-text-size-adjust: webkit-text-stroke-width: 0.0px&&&SPAN style=&DISPLAY: FLOAT: WORD-SPACING: 0 FONT: x-large 36.0px tahoma arial 宋体 sans- TEXT-TRANSFORM: COLOR: #0000 TEXT-INDENT: 0 WHITE-SPACE: LETTER-SPACING: BACKGROUND-COLOR: # orphans: 2; widows: 2; webkit-text-size-adjust: webkit-text-stroke-width: 0.0px&&&FONT size=5&参考尺寸（所有的刷子都是手工制作的，尺寸有一定误差非绝对标准，介意的亲请慎拍）：&/FONT&&/SPAN&&/SPAN&&/SPAN&&/P&&P&&SPAN style=&DISPLAY: FLOAT: WORD-SPACING: 0 FONT: x-large 36.0px tahoma arial 宋体 sans- TEXT-TRANSFORM: COLOR: #0000 TEXT-INDENT: 0 WHITE-SPACE: LETTER-SPACING: BACKGROUND-COLOR: # orphans: 2; widows: 2; webkit-text-size-adjust: webkit-text-stroke-width: 0.0px&&&FONT size=5&量筒刷500ml（猪毛）：总长度740mm，毛刷长度195mm，毛刷直径28mm，重量24g&/FONT&&/SPAN&&/P&&/SPAN&&P&&SPAN style=&DISPLAY: FLOAT: WORD-SPACING: 0 FONT: x-large 36.0px tahoma arial 宋体 sans- TEXT-TRANSFORM: COLOR: #0000 TEXT-INDENT: 0 WHITE-SPACE: LETTER-SPACING: BACKGROUND-COLOR: # orphans: 2; widows: 2; webkit-text-size-adjust: webkit-text-stroke-width: 0.0px&&&STRONG&&/STRONG&&/SPAN&&/P&&P&&/P&&SPAN style=&DISPLAY: FLOAT: WORD-SPACING: 0 FONT: x-large 36.0px tahoma arial 宋体 sans- TEXT-TRANSFORM: COLOR: #0000 TEXT-INDENT: 0 WHITE-SPACE: LETTER-SPACING: BACKGROUND-COLOR: # orphans: 2; widows: 2; 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以下供应商也提供类似产品，建议您将询盘信息一并发送给他们如图所示：在B水槽中装有500mL水，容积为amL的试管A 充满了NO2和NO的混合气体（标准状况），将试管A倒插_百度知道
1px"><td style="border-&nbsp，故答案为，则:1px solid black">a11200mol/L，试管中液面下降:normal"><table cellpadding="-1" cellspacing="-1" style="margin- 30;&nbsp，试管中液面不断上升至全充满，无色气体变为红棕色气体;wordWrap：=0:1px:nowrap.75amL:1px"><td style="border-（x-a）mL所以4:&nbsp.5amL&&nbsp，最后充满无色气体:1px solid black">118a，继续通入氧气后.75amL=0：x=a;&&nbsp:1px"><td style="border-&wordSpacing：3.5L=mol0，持续通入氧气:nowrap，完全为氧气:normal"><table cellpadding="-1" cellspacing="-1" style="margin-right，继续通入氧气后;&nbsp.4×10;&wordWrap.5amL=0:&nbsp，故答案为.75amL；（3）试管A中充满气体时停止通入氧气：n（NO）=V（NO2），故c（HNO3）=×10-3&nbsp.25mL=3：
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