hi people thank you for your responses and dont need an unnecessary argument on this one i agree that the answer was elaborated more than i asked for but i ...
hi people i wanted to ask about what exactly is nanotech i never get hold of it completely and what are exactly its application in our field that is in the...
It is the technology of manufacturing and manipulating manufactured items on a very small length scale, of the order of nanometers, often as macromolecules. ...
hey guyz, I want to know what is Valnecy and what r Valence electron?? __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo!...
"Valnecy"? I got three results for it on Google! There is a Valnecy River near Boscastle in Cornwall, England ( http://www.old-coach.co.uk/leisure.html ); and...
Dear Wolf: Valence is the number of bonds that an atom can form with atoms of other elements. Valence electrons are the outermost electrons of an atom, which...
- Acid rain is a problem in many areas of the United States. In places where there are large number of limestone quarries, the rainwater that collects in these...
hi about that valency thing in the laymenest words it is the power of any element or rather an atom to combine with other atom preassuming that u know about...
hi about ur first question what i think about that one is that limestone quarries will have CaCO3 and CaSO4 mainly which hydrolyse to form a base calcium...
i wanted to know everything you can tell me about cyclic voltammetry please do not send me google results because i have already checked them out thanks bye...
Dear my masters Excuse me for taking your time I want working with ICP but I have one problem Plasma extinguish immediately after the ignition What I can to...
Hello M. Ayaz: It sounds as if the problem is the gas flow. Either it is too high and "blowing out the flame," or too low and so cannot maintain the plasma. Do...
Dear Steve, About the valency of carbon atom,i think it can form four bonds so it must be four.Also u got the electronic configuration wrong...its 2p^2 not...
Hi Wolf! Thanks for pointing out to me that the electron configuration of carbon is indeed 1s^2 2s^2 2p^2. In bonding, the 2s and three 2p orbitals combine to...
Hi Everyone! I'm studying for my senior comprehensive exam and i am coming back to things i haven't seen in 3 years. I know this is very simple but i can't...
Hi I'm just doing a Lab for Chem 12 and needing a bit of help on a few of the questions. I was wondering if anyone has done the Heath Chemistry Experiments? I...
Because of neutralization of the H2SO4 (mostly), H2SO3, and HNO3 in the acid rain, mostly from air pollution from the burning of sulfur-containing fuels...
This morning I realized I said something wrong in yesterday's post. 6.2 or 6.4 is the specific heat of elements in calories per gram mole degree C. My text...
Hi Everyone! I'm on my studying quest again, and I need help with the following problem: A three-mole sample of a monatomic, ideal gas initially at 400K and 1...
Hi guys, I have another query: Suppose that a 1-L sample fo an ideal gas, initially at STP, is subjected to the following three-step process. An irrecersible ...
Anyone can help me find the osmotic coefficients (or water activities) of Na2CO3 and K2CO3 solutions, at 20ºC or 25 ºC, for a range of molality as big as...
Hi TUNICIA molal freezing point constant: the number of degrees of freezing point of a pure solvent should be lowered by addition of a mole of solute to (1000)...
Anyone can help me find the osmotic coefficients (or water activities) of Na2CO3 and K2CO3 solutions, at 20ºC or 25 ºC, for a range of molality as big as...
Is the activity of pure water 1.0? In that case, I think the activity coefficient for water mixed with salt will be the mole fraction of the water, or...
hi, can anyone help me with this: cis- 4bromo-tert-butylcyclohexane has 4.33ppm proton signal at carbon-4 trans- 4bromo-tert-butylcyclohexane has 3.63ppm...
At ordinary temperatures, the cyclohexane ring (which is not planar, because of the preferred angle of 109º28' between bonds for sp3 hybridization) "bends"...
The cyclohexane ring also has two chair conformations. One where the t-butyl group is axial and one where it is equatorial. At higher T the molecule can flip...
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