Well there is a formula that relates pressure, mass and volume, which is pressure = mass/volume. In order to keep it consistent one of the three needs to stay constant. So in this case mass is constant so you can play around with pressure and volume
hiiii at question 16 evaporates absorb heat to the surrounding right, to break force of attraction and hence kinetic energy between particles become higher, isn't it ? why would u say the kinetic energy decreases when the state changes from liquid to gas ? can u plss explain? thankss
Heyyyy! We are focusing on the liquid that hasn’t evaporated yet so the liquid that’s still in the beaker. Because some of the liquid evaporated, the average kinetic energy decreased as there is less particles in the beaker.
For sure, so for Q15 you can think of Le Chatelier's Principle which states that when a system experiences a change/disturbance (in this case pressure on gas x in the first drawing and then released in the second one), the system will try to oppose that change and reach equilibrium. In the second pic, the piston was able to move since the tap was opened so there was a disturbance. Think of it as you being the piston, would you want to be stressed out and put pressure on one side more than the other or would you prefer to find stability? I hope that made sense, if not, let me know.
@@AskAseel The only thing I didn’t understand is why did the piston move to the right when the tap opened. So before the tap was opened, there was a gas stronger than gas X, which kept it towards the left?
@@AskAseel So when the tap was closed, the piston was to the left. But when the tap opened and the atmospheric air entered, shouldn’t it go to the left?
quick question, what does "fixed mass" imply in question 15? And in general why does it matter for questions like this?
Well there is a formula that relates pressure, mass and volume, which is pressure = mass/volume. In order to keep it consistent one of the three needs to stay constant. So in this case mass is constant so you can play around with pressure and volume
@@AskAseel ohh got it thanks! My mcq board exam is tomorrow :)
@@glo457 Good luck 🥳 you’ll do great!
Your explanation is so good, please make more videos!
Thank youuu!
I sure will 😌👍🏽
Ur vids r rlly helping me a lot tnxx
You’re welcome 🥰
hiiii at question 16 evaporates absorb heat to the surrounding right, to break force of attraction and hence kinetic energy between particles become higher, isn't it ? why would u say the kinetic energy decreases when the state changes from liquid to gas ? can u plss explain? thankss
Heyyyy! We are focusing on the liquid that hasn’t evaporated yet so the liquid that’s still in the beaker. Because some of the liquid evaporated, the average kinetic energy decreased as there is less particles in the beaker.
@@AskAseel okie thankss
Very good video !! Keep it up ❤❤
Thank you!!💖💖💖
In Q14 why do we substitute the density of the sea water in the equation of fresh water
That’s because we don’t know what the density of fresh water is so we used other values to represent it. I hope that makes sense
YESS
part twoo!!
Woooo🙌🏽🙌🏽🙌🏽😂
for q 12, is it possible to use F=ma and how ?
Hey, it won't be possible to use F=ma because we do not have enough information to solve for acceleration.
May you please re explain q.15?
For sure, so for Q15 you can think of Le Chatelier's Principle which states that when a system experiences a change/disturbance (in this case pressure on gas x in the first drawing and then released in the second one), the system will try to oppose that change and reach equilibrium. In the second pic, the piston was able to move since the tap was opened so there was a disturbance. Think of it as you being the piston, would you want to be stressed out and put pressure on one side more than the other or would you prefer to find stability? I hope that made sense, if not, let me know.
@@AskAseel The only thing I didn’t understand is why did the piston move to the right when the tap opened. So before the tap was opened, there was a gas stronger than gas X, which kept it towards the left?
@@AskAseel ??
@@ElectroGamer-tj7hy yes there was and that’s because it isn’t a vacuum. There was air present alongside gas X
@@AskAseel So when the tap was closed, the piston was to the left. But when the tap opened and the atmospheric air entered, shouldn’t it go to the left?
Part 3 ?
Heyy,
I haven’t filmed that video yet so I’ll have it uploaded on Tuesday
Sorry for the delay. The video is up now if you still need it.
@@AskAseel thanks
@@ibmshahid9187 no problem