A mass of 0.1156g of a substance that is composed of carbon,hydrogen and nitrogen is reacted with oxygen.Carbon dioxide(0.1638g) and water (0.1676g) are prodeced with all of the original carbon converted to CO2.Determine the original mass of carbon present in the 0.1156g sample.
问题描述：
A mass of 0.1156g of a substance that is composed of carbon,hydrogen and nitrogen is reacted with oxygen.Carbon dioxide(0.1638g) and water (0.1676g) are prodeced with all of the original carbon converted to CO2.Determine the original mass of carbon present in the 0.1156g sample.
答
同意楼上的，鉴定完毕！化学专业哦！
答
0.1156g含C,H,N的某物质在氧气中燃烧生成0.1638gCO2和0.1676gH2O,C全部转化成CO2,问0.1156g样品中碳元素的质量.
解答很简单,C全部转化成CO2,从CO2质量就能推出C质量
m(C)=0.1638/44*12=0.04467