Solving the Ammonium Chloride Problem

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The discussion revolves around a chemistry problem involving the formation of ammonium chloride when HCl and ammonia gases enter a glass tube. Participants emphasize the importance of learning and understanding the problem rather than seeking direct answers. One user eventually solves the problem by realizing they needed to take the square root of the masses involved. The conversation highlights the educational aspect of problem-solving in chemistry. Overall, the focus is on encouraging independent thinking and learning through challenges.
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Please solve this problem for me:
"Through the two ends of a glass tube of length 200cm HCl gas and ammonia gas are allowed to enter. At what distance ammonium chloride will first appear?
 
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chound said:
Please solve this problem for me:
"Through the two ends of a glass tube of length 200cm HCl gas and ammonia gas are allowed to enter. At what distance ammonium chloride will first appear?

sorry, this is a place of learning, not a place for easy answers. try working it out on your own and coming here for help on the parts you get stuck on.
 
ComputerGeek said:
sorry, this is a place of learning, not a place for easy answers. try working it out on your own and coming here for help on the parts you get stuck on.
:eek: :eek:
I got the answer. I had forgotten to take square root of the masses
 
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
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