Other Sciences

When we write chemical formula, such as water+sodium hydroxide H2O+NaOH, if we don't know the product , can we still have the correct answer?

If it can, then how cold should it be for it to freaze? I've seen the movie "The Day after Tomorrow" and without destroying the point (actually a nice movie) -- I just thought how cold should it be for the oxygen to freaze... I'd appreciate if you WONT put spoilers in here by the way let people enjoy the movie as it is. ~moo

HEy I'm currently doing a research and i need to know of a material which is an excellent abosrbent of facial oil. Pls Help

Since this is a fairly common discussion and or interest, I thought this might be an interesting read for those that are curious. http://www.biomedcentral.com/news/20040527/01/ PS. Not sure if this is supposed to be in the news section or not, but since my last erroneous go at it, I'm feeling a bit reluctant of placing it there.

I'm writing a book that deals with the concept of evolution applied to society and life (which is all part a creation of evolution anwyay, but usually (prolly never) are evolution concepts in politics and such). i'm being kinda general on the off-chance that someone would take my specific idea and publish it in a way i don't want. So i was wondering what kind of math is involved in evolution. I know the really basic stuff, i want to know what kind of more complex alogrithims or whatever could be involved in higher types of evolution. Strategys of survival, whatever i don't even know where to start. I regret that i did not have the spine to take AP Calculus with some …

Which scientist do you know the most, and why?

Hi, I'd like some explanations of what the primary, secondary, and tertiary structures of proteins, protein purification, and basic protein spectroscopy are. I've taken only 2 quarters of inorganic chemistry. Most of my work has been in stoichiometry. Anybody think they can give me an explanation of these things?

hello all, i am a new member .i am a huge fan of leonardo da vinci.but i specialize in the study of chemistry and especially water: our life force.i am also a football fan.(aresenal). ok.there was my. intro here is what i mean when i say that there is so much to understand in H20. i recently read a book on water & how it absorbs information and shows a difference in the crystals. EXP: NO 1 there were photographs of the crystals when certain music was played like beethoven,mozart,elvis etc and it was amazing when they played beethoven the crystal was like a gold star when they played mozart it was like a silver star and this is the coole…

I've searched and searched, but I have yet to find information on the location of greenhouse gases (what layer of the atmosphere). I would also like to know if they are located at the bottom or top of that layer. (example= the ozone is mainly in the top of the stratosphere). The only information that I could find is regarding the composition of the "greenhouse gases" but not the actual location. Thanks.

Carbon dioxide dissolves into a layer of water in light-independent stage of photosynthesis. What does a layer of water mean? And what is the compound or mixture that H2O+CO2?

What do you guys think about starting a mentoring group on SFN, which would help children and adults with there current learning subject(s), i.e. G.C.S.E. A-level ect… We could have user(s), defined to a particular subject, which they have studied or excel in, i.e. Chemistry, Mathematics ect… And also amalgamate that with a revision programme? Any views?

Hi everyone, Just wondering if you can be of assistance. I am just wondering if ppm is the same as mg/l. If not how do i convert it.???? Thanks for your help

Normally, I have to wear glasses. However, when I don't put them on, I can still see clearly by doing this: I take both thumbs and forefingers and put them together so there is a tiny hole between them. I look through that. How can that help me see?

I like to dedicate this to ExtraSense if he's still around: Courtesy of Nature.com

I have been interested in science for many years now. While in college, I majored in a field other than science. While I am pursuing a career in my chosen field a study, I am also interested in pursuing science as a hobby. I am interested in doing research to further some or even all fields of science. This brings me to my question. In what ways can an amateur scientist contribute to the major fields of science?

There is something wrong with which I am going to say now, but I can't put my finger on it. Something must be wrong! The Earth spins anticlickwise when looking from the North. Let's say a plane takes off from Britain and heads towards India or something. It is now travelling with the movement of the Earth, does that mean it is moving faster than the Earth's rotation? Now, let's take the opposite. The plane is now heading towards the USA, it is going against the Earth's rotation. When it lands, shouldn't the plane, and its passengers be thrown backwards, because on the ground, it will be experiencing the movement of the Earth? Something is all wrong here! Can …

Hi, a Q: Is it technicly possible to build a power source, or to use a transformer to get 1,000 Amps per 0.01 Ohm of internal resistance ? (Or near that value - in terms of power, 10 kW in this case.) Thank you

I know that sound comes from the vibrations transmitted through an elastic material or a solid, liquid, or gas. I am just wondering what kinda material is easier to generate sound? Any body can shed light on it? Thanks in advance.

I need some help with some study for a test, any help at all would be greatly appreciated. Thanks in advance. - Discuss Newtons 2nd Lawand its equation F=ma to confirm the observations of motion - Show the relationship between mass,force and acceleration - Show using appropriate models that levers can act as force multipliers or distance multipliers - Show the advantage and disadvantage of an inclined plane as a simple machine - Discuss the concept of mechanical advantage and how it may be found - Show with models that a theoretcal mechanical advantage and practical mechanical advantage can be different - Show that gear wheels and pulley wheel…

Contemporary physics from its beginning in the 17th century has been progressing in two parallel directions:empirical and mathematical. It brings one of unresolved problems of epistemology for these two branches are not well combined in the scientific theories. Mathematics is an instrument for describing the hypothetical propositions and making mathematical inferences from those hypotheses. But mathematics has no means for judging the truth of physical hypotheses. Empirical methods can provide us with the facts relating to the phenomenon. But, the facts can be selected, described and interpreted differently. Empirical methods have no means of selecting the concepts of a t…

--- in North America anyway. http://www.msnbc.msn.com/id/4638582/ --- check out that site. Anyway it says they come every 17 years, but i am 17 and i have seen two waves of cicada in my lifetime. One when i was young, was very bad. All over. Nasty nasty nasty. But we enjoyed crushing them. Again was two or three years ago, me and my friends organized a battle unit (system consisting of whacking a tree, running, swatting as many as possible of the bugs that fly off (with tennis rackets), checking each other for bugs while they resettle, then repeating) , since there were so many it was more fore summer amusement than a serious undertaking. We are looking forward to this y…

I am doing an investigation on to find the relationship between the temperature of the surface of the bulb with its power. Can some 1 tell me how the graph of this relationship would look like thank you

Pls suggest where to see articles related to see environment and pollution and it is not here then there is need to develop it

i am doing an experiment to measure the temperature of the surface of the filament, i using thermocopule, my teacher told me to use thermopaste on bulb to measure the temperature. Can some 1 tell me what is thermopaste and what does thermopaste do. thanks

I am doing an experiment to find the surface temp of filament bulb. i wanted to know what the function of silicon greases on the surface of the bulb to measure the tempeature. thanks