A white powder,consisting of a simple mixture of tartaric acid (C4H6O6) and citric acid(C6H8O7) was analysed to determine the elemental composition.Combustion of a 310.0-mg sample produced 384.0 mg of CO2 and 113.1 mg of H2O1).Calculate the % carbon,

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A white powder,consisting of a simple mixture of tartaric acid (C4H6O6) and citric acid(C6H8O7) was analysed to determine the elemental composition.Combustion of a 310.0-mg sample produced 384.0 mg of CO2 and 113.1 mg of H2O1).Calculate the % carbon,
A white powder,consisting of a simple mixture of tartaric acid (C4H6O6) and citric acid(C6H8O7) was analysed to determine the elemental composition.Combustion of a 310.0-mg sample produced 384.0 mg of CO2 and 113.1 mg of H2O
1).Calculate the % carbon,by mass,in the sample
2).Calculate the % hydrogen,by mass,in the sample.
3).Calculate the % oxygen,by mass,in the sample.
4).Calculate the % citric acid,by mass,in the sample
不是翻译

powder When _____ with water,the white powder will become green.A.mixing.B.to mix.C.mixed.D.being mixed正确答案是C,为什么不选A呢? A powder ised to turn milk into a white night,a white crow,white a white A white a white a white a White a white 谁能翻译 Soft white waxy phosphorescent solid,brown-red powder or black. 英语翻译sun science powder sunblock EX speciaal set sun sctence sunfemover gel white-skin science essential peeltng 英语翻译New Powder Pouch,made from 100%cotton and filled with talc powder,getsextra sand off without making a mess. a white umbrella 还是 an white unbrella? A white powder,consisting of a simple mixture of tartaric acid (C4H6O6) and citric acid(C6H8O7) was analysed to determine the elemental composition.Combustion of a 310.0-mg sample produced 384.0 mg of CO2 and 113.1 mg of H2O1).Calculate the % carbon, a white lie a white elephant是什么意思? a white elephant