Homework Statement
Lim [x^2*y^3/(x^4 + y^4)]
(x,y)->(0,0)
Find the limit or prove it doesn't exist
Homework Equations
The Attempt at a Solution
Tried considering the limit along the line x=y, and y=x^2, but couldn't show there where different vaules of limit for different curves...
ok?,
what about Bores model?
because doesn't the different geometric arrangments (s,p,d,f)
fill in that order?
also, because there are more protons there are also more electrons. so there isn't any exess charge. however if we were talking about ions, it would be different.
i think?
ok,
you start off with $70 (ring)
+$100(banker)= $170
-$70(ring)=$100
-$30(change)=$70
-$100(banker)= -30$
but he started with a ring so total losses = ring+$30
1. The problem statement
physics and chemistry, are very similar in some respects. where can we draw the line between these two sciences?
(considering this is a physics forum, i want to know what i can and can't post!)
[SOLVED] why are noble gases, gases?
Homework Statement
this has bothered me for some time,
what determines the density of an element at normal atmoshpheric conditions?
and more importantly what determines if a substance at s.t.p is a gas solid or liquid
Homework Equations
gas...
thanks for this,
but i still don't really get it
because wouldn't Na would have energy levels 1,2 complete with one electron in the third shell (3s). while Cl would have 1,2 (3s) energy levels complete with one electron missing from (3p). so Cl would have a bigger radius? unless the energy...
Homework Statement
why do the noble gases stay at a gas state whe almost every other element in the period doesnt?
The Attempt at a Solution
because the elctrons repel each other? i don't know
Homework Statement
Recently in my chemistry class my teacher told us that, the greater the atomic number the smaller the radius of the electron. Because there is more protons pulling on electrons. which would mean the elctrons move inwards.
This doesn't seem quite right to me as i thought...
Homework Statement
ive been thinking about this for some time but can't find an answer...
gas enters a bottle at a very low pressure, and high temperature, to maximise space between particles. the bottle is then sealed off and the temperture drops to absolute zero, does the gas become solid...
Homework Statement
does the speed of sound increase as the temperture becomes closer to absolute zero, which would make the substance more and more dense?
Homework Equations
dont think there is any
The Attempt at a Solution
really confused as, isn't it the more dense a substance...