hybrid04

The question is asking for kilojoules correct? The only thing you have which converts between kj and deg C is the heat capacity. That is how a calorimeter works, you take the known heat capacity of water and based on its temperature change you can determine the amount of heat put into it. Final-inital= change in temperature. Temperature times what gives you joules? Side note: if the answer only asks for kJ the mass of the ammonium nitrate is moot and just there to throw you off. However if they wanted kj/gram ammonium nitrate then you would divide by the mass you added.

Reading them all never hurt

If you dont feel like going to google. I dont feel like helping you with such routine information. Google it, then come back. People arent here to do your homework.

geocentric, earth is center. heliocentric sun is the center. The previous was supported by religions because it allowed heaven to be above earth so you just went up. Heliocentric was supported by many including those such as copernicus and was used to explian certain phenomenon which couldnt be explained in a geocentric system. Perhaps you should show some of your own points and some confusion instead of a blanket wide open question and ask someone to do your homework.

organic chem 2 inorganic chem physical chemistry 1 some sociology class physics class that discusses teh effects of WMDs on the world

After browsing some of those links in one of them they claim to have overcome the energy barrier which had previously prevented commercialization of electrolysis. If that is correct it could throw off your calculations woolean.

I watched that clip and initially i thought it was pretty cool but when i first saw it i wondered how much power it took to run. A few days later this thread has developed and it appears im not the only one to think that. To me it seems like a scam. Id be interested for someone to actually contact them directly and see what they have to say. There is a contact section on their website where they allow you to contact them if you want to see a demonstration of their technology.

For the first one im assuming you rounded up from 1.6666666 so yes that is correct. The second one is pretty much the same of the first. (.045 mol/L) (1.00L)= # of mol (#of mol) (molar mass)= g solute.

D is the vertical shift and c is the horizontal shift. Since the amplitude is 5 and the lowest level is 11, you just add 5 to that for d. c is the horizontal shift. Remember minus equals right so it would be something like 14 if your scale on the x axis was hours.

Basically you have to look at the forumulas. Since HNO3 is in excess the amount of product produced is dependant on the other reagent. The mole ratio given from the reaction is 1mol C6H6 produces 1 mol C6H5NO2. Remember it is a mole not a mass ratio. So 1g doesnt make one g. Figure out how many moles of starting material that equals the number of moles of product and then multiply by the molar weight. This gives you 100% yield (or theoretical yield). Multiply that by .71 and you have 71% yield. For the second one im not sure exactly what 'formula units' are but you could still use the same process and get formula units in the end. You need to find the balanced formula for the reaction and then just match the coefficients. 1 for 1 or 1 for 2 etc and then mulitply out the forumla units.

I drive a hybrid and i love it It has an awesome charge assist gauge that entertains me for hours. It just moves back and fourth....green blue green blue! On a side note it is an excellent car. Granted the getup isnt the most amazing but i didnt get the car to replace something. I got it for the fuel effiency and the money it would save. At current i get about 400 miles to the tank on my 12 gallon tank. Come to think of it thats an understatement considering im to paranoid to let the gauge go that low to even get close to less than 2 gallons. Depending on whether im driving on the expressway, side roads, or stop and go it can drastically effect the mileage. About the last one the hybrid hype. Ive had mine for 2 years. I couldnt be more happy with it. The only downside is the special 0w-20 oil it uses which is expensive to get an oil change at your generic drive up so i have to go to the dealership but they wash my car for free so its all good

Im a little rusty on that stuff but i took ap calc in high school and in cases like that my instructor often told us to plug and chug in the calculator. Im assuming you have a TI and you can do a line or expoential regression. Perhaps do that and get a forumla then take teh derivative? (yes the attachment works fine...in both posts)

Or perhaps the alcohol isnt pure? I was browsing wikipedia and stumbled on this Linkie It says its used to test for the presence of primary/secondary alcohols because of that selectivity so perhaps the chromium isnt the problem.

Check out this Link it has the equation in several forms and some brief explanations.

I dont see why it would make a difference. Your best guarentee would be to put the units on as to prevent any confusion id say, but im not really speaking from expertise. So just get xx mmHg/ xx mmHg and put in xx kPa/ xx kPa.