A4.98 g sample of aniline (c6h5nh2, molar mass = 93.13 g/mol) was combusted in a bomb calorimeter with a heat capacity of 4.25 kj/°c. if the temperature rose from 29.5°c to 69.8°c, determine the value of δh°comb for aniline. a) +7.81 × 103 kj/mol b) -3.20 × 103 kj/mol c) +1.71 × 103 kj/mol d) -1.71 × 103 kj/mol e) -7.81 × 103 kj/mol

Phosgene (carbonyl chloride), cocl2, is an extremely toxic gas that is used in manufacturing certain dyes and plastics. phosgene can be produced by reacting carbon monoxide and chlorine gas at high temperatures: co(g) cl2(g)⇌cocl2(g) carbon monoxide and chlorine gas are allowed to react in a sealed vessel at 477 ∘c . at equilibrium, the concentrations were measured and the following results obtained: gas partial pressure (atm) co 0.830 cl2 1.30 cocl2 0.220 what is the equilibrium constant, kp, of this reaction