Hydrogen chloride molecular mass

Using the laws of constant composition and the conservation of mass, complete the molecular picture of hydrogen molecules (O—O) reacting with chlorine molecules ( — ) to give hydrogen chloride ( —O) molecules. 

As examples, the molecular mass of ethylene is 28.0 amu, the molecular mass of hydrogen chloride is 36.5 amu, the molecular mass of ethyl chloride is 64.5 amu, and the formula mass of sodium chloride is 58.5 amu. (These numbers are rounded off to one decimal place for convenience the actual values are known more precisely.)... 

Gases diffuse at different rates. If one piece of cotton wool is soaked in concentrated ammonia solution and another is soaked in concentrated hydrochloric acid and these are put at opposite ends of a dry glass tube, then after a few minutes a white cloud of ammonium chloride appears (Figure 1.14). This shows the position at which the two gases meet and react. The white cloud forms in the position shown because the ammonia particles are lighter and have a smaller relative molecular mass (Chapter 4, p. 62) than the hydrogen chloride particles (released from the hydrochloric acid) and so move faster. 

Calculate the mass in grams of hydrogen chloride produced when 5.6 L of molecular hydrogen measured at STP react with an excess of molecular chlo-... 

It has been established [1, 44, 45] that the degradation of PPO based on phenol, o-cresol and 2,6-dimethylphenol depends on both the structure of the repeat unit and the molecular mass. The thermal degradation of these PPO under vacuum proceeds with the release of both gaseous (hydrogen, carbon monoxide, carbon dioxide, methane, methyl chloride and ethane) and non-volatile products are aromatic compounds of the type Ar-O-Ar. It has been suggested that the thermal degradation of PPO may proceed with the formation of benzyl radicals, namely ... 

Since the background ion current of the positive ion methane chemical ionisation mass spectrum in the region of 10-60 m/z was intense, no attempt was made to monitor the evolution of hydrogen chloride ( H Cl, m/z 36). Protonated molecular ions were observed for the major fragments with the exception of methylnaphthalene, methylanthracene, and ethylanthracene. The nominal structures for the fragments that result from the thermal degradation of the polyene are shown in Table 4.1. 

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