Quartile

if there are two nonbonding atoms next to each other, could their electron clouds overlap slightly? or would they bump each other out of the way? more generally, is there an event horizon for atoms? do positrons exist naturally? if so, where? thanks

faster than or at the same speed as, either way regardless, gravity is not electromagnetic i dont write down sources, but there have been several studies that ive read that have fairly arbitrary, theoretically-based values for the speed of gravity at many times c. there has not been evidence enough to prove anything conclusively, and I doubt that a scientific journal or team would want to publish anything another than c for the speed of gravity simply because of the amount of scrutiny it brings. its a hot topic

afaik, gravity travels faster than light. pending many studies and the conclusion that they bring to science.

physics is the study of the interaction between particles, or singular units of mass. would a unifying theory, then, be required to include descriptions of the interactions between people? is this a topic of debate in the science community, especially with regard to string theory?

After reading the wiki article and doing a little research I have decided that the school could never afford such a machine. But thanks for the idea, I might include it in the report for some +pointage.

Not that Im aware of. Would it be a simple procedure to use one to figure out the ratio of the compounds in the mixture?

So I have a mixture of NaCL and 2NaHCO3, table salt and sodium bicarbonate. I need two methods of finding the proportionality of the two in this mixture, and I am given the use of anything in the lab. My first method involves weighing the mixture, weighing some HCl, adding the HCl, stirring for a few minutes, and weighing the result. I should be able to find the weight of sodium bicarbonate in the mixture by using the weight lost by changing to gas and the chemical equation: 2NaHCO3 + HCl = NaCL + H2O + CO2 If this first method looks good, then great. But I am completely lost on the second method. I looked at the thermal decomposition of 2NaHCO3 and found that it decomposes at 60ºC into Na2CO3 + H2O + CO2, but that further heating will decompose the Na2CO3 into Na2O + CO2, so there seems to be no way to measure the weight lost by CO2 formation? Both compounds are soluble in water, so there seems to be a roadblock in that direction as well? Any help is appreciated, thanks