CHM120H5 Chapter Notes - Chapter 13-14: Ideal Gas, Reagent, Nitrite

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Name: aysha anwar;student #1001210959;chm120h5s;pra0126;assignment #2 ;ta"s name guanzhi li. The limiting reagent for moles n=3. 12 moles from nitrogen which is used as the molar ratio of the atoms h:n:o. N:43. 7 g x 1mol/14. 01g. mol-1 = 3. 12 moles ; 3. 12/3. 12 =1 mole. O: 50 g x 1mol/16. 01g. mol-1 = 3. 125 moles ; 3. 125/3. 12= 1 mole. H: 6. 3 g x 1mol/1g. mol-1 = 6. 3 moles ; 6. 3/3. 12 = 2 mole. Nh2o molar weight = 14+2+ 16 = 32 g. mol-1. Using ideal gas law, pv=nrt at stp(standard temperature pressure ) for 1 mole of a gas, Pv= (mass/molar mass) (0. 08206 l. atm/mol. k) (273 k) ; molarmass = (mrt/pv) =2. 86 g/l (0. 0826 l. atm/mol. k ) (273 k) /1 atm. Molar mass = 64. 07 /mol of unknown x mol nho/32g. mol-1. Compound a , is a commercially aqueous compound that is strongly acidic. It has a concentration of 16m once determined from online resources of commercially stock market , the acidic substance turns out to be nitric acid hno3.

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