英语化学求分子式和试验试!

题目

英语化学求分子式和试验试!
A compound contains only carbon,hydrogen,and oxygen.Combustion of 10.68 mg of the compound yields 16.01 mg CO2 and 4.37 mg H2O.The molar mass of the compound is 176.1 g/mol.What are the empirical and molecular formulas of the compound?(Type your answer using the format CO2 for CO2.)
empirical formula
________________
molecular formula
________________

答案

m(C)=(16.01/44)*12=4.36636 (mg)m(H)=(4.37/18)*2*1=0.48556 (mg)m(O)=10.68-4.36636-0.48556=5.82808 (mg)n(C);n(H);n(O)=(4.36636/12):(0.48556/1):(5.82808/16)=3;4;3empirical formulas of the compound;C3H4O3...