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Determine the compounds percent composition

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1. The number of ethoxy groups (CH3CH2O-) present in an organic compound can be determined by the following sequence of reactions:

R(OCH2CH3)x + xHI → R(OH)x + x CH3CH2I

CH3CH2I + Ag+ + H2O → AgI + CH3CH2OH

A 36 92 mg sample of an organic compound with an approximate molecular weight of 176 was treated in this manner, and provided 0.1478 g of AgI. How many ethoxy groups are there in each molecule?

2. A 101.3 mg sample of an organic (CH) compound, known to contain chlorine, is burned in pure O2 and the gases are collected in absorbent tubes. The CO2 tube increases in mass by 167.6 mg, and the H2O tube increases by 13.7 mg. A second sample of 121.8 mg is treated with concentrated HNO3 to produce Cl2. The chlorine gas subsequently reacts with Ag+ to form 262.7 mg of AgCl.

Determine the compound's percent composition, as well as its empirical formula.

Reference no: EM13843794

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