Qualification > Sciences
Physics (P2) Doubts.
coco pops:
ya sry N has mas no. of 14 not 17.my bad
and thank you for the answers! :D
sory 2 bother but could you please list me the proper detailed answers? if its nw a problem..thank you once again!
Asamy111:
but i think the equation should be balanced .. or wt ???
and i meant the drawing attached for the graph question by Xera . is it right or wt??
sammwangi:
--- Quote from: coco pops on June 08, 2010, 05:47:13 pm ---1)compare the spacing,ordering and motion of molecules in ice at 0 degrees celcius and water also a 0 degree celcius (6 marks)
Spacing:_______________________
Ordering:_______________________
Motion:________________________
a) N (mas no. 17 proton no, 7) + He(mas no.4 proton no.2) ----> O <mass 17 proton 8> + ______
i) complete equation
ii) idenify particle other than oxygen nucleus produced in the transformation
is the answer for this Hydrogen molecule? or wt
please reply quickly
thank you
--- End quote ---
The Spacing is smaller
The ordering is random(er)
The motion the particles move further apart (i.e now include translation as opposed to only vibration)with the same average kinetic energy i.e speed as before.
Water exhibits a weird solid state due to the presence of hydrogen bonding. Essentially, the ice structure is less dense than water because the molecules are further apart(thats why ice floats on water). The hydrogen bond spread the water molecules out in solid state. The implication of this that the spacing is further apart in solid state and the molecule is more ordered i.e. ice is crystalline while water is amorphous.... the motion is that the water particle move further apart bt with the same average kinetic energy i.e speed as before because the temperature is the same.
halosh92:
--- Quote from: coco pops on June 08, 2010, 06:32:13 pm ---ya sry N has mas no. of 14 not 17.my bad
and thank you for the answers! :D
sory 2 bother but could you please list me the proper detailed answers? if its nw a problem..thank you once again!
--- End quote ---
where did u get this question from? is it form a pastpaper?
Chingoo:
I've edited my previous post with the detailed answers and correct answer for the second question.
Yes, these questions are from past-papers Halosh. I believe the second question is more recent.
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