Determine the compounds percent composition as well as its

Question

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.