Recent content by Maisara-WD

That's acceptable :D Thanks ALOT :)

Let's say it's conserved, WHY to introduce a new concept? is just because of the scalar nature of energy quantities?

I've forgot to say: Mu readings have lead me that the concept was introduced in order to account for the uniform motion (assume it's space with no resistances), that a body makes although the physical interaction causing it to move disappeared. I still don't get it, I think the answer is...

Hello Please, if you UNDERSTAND WHAT IS MOMENTUM, tell me. I want to know, why do I need momentum, why was this concept introduced. If I were an ancient scientist, what's the problem that faced me in absence of such concept, that lead me to devising it, and at which basis did I choose my...

Hi (1) What does it mean to APPLY PRESSURE?? Don't we actually apply force that is interpreted into pressure by dividing it upon area of action? This question will clarify really the concept of Pascal's principle. (2) HOW CAN IT BE A SCALAR QUANTITY ALTHOUGH FORCE IS A VECTOR ONE? HOW can...

How about describing the wave itself? where can I fing some useful (understandable :) ) Materials explaining this matter?

Hi I can't proceed imagining the matter after this point... For a propagating wave: The medium particle gains energy to move.. Question 1: what makes the particle to move up or down, what is the force acting upon it. The wave sinusoidal pattern shape that travels across the medium...

That's what I do want to understand... WHY and how the strong oxidizers as conc sulphuric acid or nitric acid produce Fe(III) and not Fe(II)... And more important: What is the basis on which these oxidizers are reduced into their oxides>>?? thank u all guys.. I'm waiting

Hi All Will you please please explain this reaction to me.. Very Briefly?? The reaction of a metal eg. Fe with an oxidizing acid eg. conc sulphuric or dil or conc nitric... Fe + 4HNO3 -----> Fe(NO3)3 + 2H2O + NO 3Fe + 8H2SO4 ----conc hot-----> Fe(SO4)3 + 4SO2 + 8H2O Of course...

tahnx

Why is it iron 2 and not iron 3? Hi all Upon the reaction of Hydrochloric acid with Iron.. the following equation represents the reaction: Fe + 2HCl -------> FeCl2 + H2 Why isn't the product FeCl3? I don't understand what makes it not possible for iron to form this chloride salt...

Hi everybody f(x) = aX0 is the form of any constant polynomial... right?? eg: f(x) = 3 is actually f(x) =3X0 where X belongs to R... ok?? since 00 is an unspecified quantity.. therefore on graphing a constant.. it should exists a hole on y-axis... and the y-intercept should not satisfy...

Similarly and more obviously... 57La.. Lanthanam... [Xe] 6s2,"5d1" This is the problem.. why didn't we enter the 4f sublevel directly..?! this outermost configuration led to putting the La in the d-block elements and not f-block.. and all lanthenides are following the general...

That's aufbau sequence: 1s<2s<2p<3s<3p<4s<3d<4p<5s<4d<5p<6s<4f<5d<6p<7s<5f<6d<7p see the e. configuration of cerium (58Ce) foe instance: [Xe] 6s2, 4f1, 5d1 unlike that stated in the aufbau principle... why isn't the 4f filled completely before 5d??

Hi all I cannot understand Why Does the f-block elements differ in their electronic configuration from aufbau principle... Please I want to understand this particular mystery.. thanx