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Question:

Glucose contains resveratrol (C14H12O3) to determine the mass ratio of resveratrol and carbon dioxide of the same quality as carbon dioxide

Glucose contains resveratrol (C14H12O3) to determine the mass ratio of resveratrol and carbon dioxide of the same quality as carbon dioxide

Answer:

They are x and y, containing carbon equal, according to the mass of an element = the mass of a compound * the elementMass fractionFor C14H12O3, the carbon mass fraction is C%=12*14/ (12*14+12+16*3) *100%=73.68%For CO2, the mass fraction of carbon is 12/ (12+16*2) =27.27%There is x *73.68%=y*27.27%So there's X: y =57:154
They are x and y, containing carbon equal, according to the mass of an element = the mass of a compound * the elementMass fractionFor C14H12O3, the carbon mass fraction is C%=12*14/ (12*14+12+16*3) *100%=73.68%For CO2, the mass fraction of carbon is 12/ (12+16*2) =27.27%There is x *73.68%=y*27.27%So there's X: y =57:154
They are x and y, containing carbon equal, according to the mass of an element = the mass of a compound * the elementMass fractionFor C14H12O3, the carbon mass fraction is C%=12*14/ (12*14+12+16*3) *100%=73.68%For CO2, the mass fraction of carbon is 12/ (12+16*2) =27.27%There is x *73.68%=y*27.27%So there's X: y =57:154

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