232ChapterFiveGases132. Nitric acidisproduced commercially bytheOstwald process. Inthefirst step ammonia isoxidized tonitric oxide:4NH3(g)+50ig)---+4NO(g)+6H20(g)Assume this reaction iscarried out inthe apparatus diagramedbelow.2.00LNH30.500atm1.00LO21.50atmThestopcock between thetworeaction containers is opened, andthe reaction proceeds using proper catalysts. Calculate the par-tialpressure ofNO afterthereaction iscomplete. Assume 100%yield forthereaction, assume thefinalcontainer volume is3.00L,and assume the temperature isconstant.133. A compound contains only.C, H, and N. It is 58.51% C and7.37% H by mass. Helium effuses through aporous frit 3.20times asfastasthecompound does. Determine theempirical andmolecular formulas ofthis compound.134. Oneofthechemical controversies ofthenineteenth century con-cerned theelement beryllium (Be). Berzelius originally claimedthat beryllium was atrivalent element (forming Be3+ions) andthat itgave anoxide with theformula Be203. This resulted inacalculated atomic mass of13.5forberyllium. Informulating his
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