Asked by Dotun
                300cm^3 of Co is mixed and sparkled with 400cm^3 of air containing 21% of oxygen if all the volumes are measured at S.T.P calculate the total volume of residual gases
            
            
        Answers
                    Answered by
            DrBob222
            
    You have 300 cc Co with a density of 8.9 g/cc - >? grams. Then mols Co = g/atomic mass = approx 45. The oxygen in 400 cc air = 400 x 0.21 = about 84 cc and 84/22,400 = about 0.004 moles  which is just a long way of telling you that the oxygen in the air is the limiting reagent and ALL of the oxygen in the air is used. So what's left? Just the nitrogen and other gases; i.e., 79%. So 400 x 0.79 = ? cc other gases = ? residual gases.  
    
                                                    There are no AI answers yet. The ability to request AI answers is coming soon!
                                            
                Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.