Q:that additives make the concrete more shine and use it as afinishing levle

They're made at the Dept. of Treasury by a machine.

Q:Let C and C‘ be two abelian categories and let F:C---gt; C‘ a (additive?) functor. Suppose that X non zero implies F(X) non zero. Does this imply that F is faithfull?

of course they can be fired twice, if you can find them ;-)

Q:my 97 chev pu has 144000 miles on it and is using 1 to 2 qts per oil change. should i use a additive?

if you're changing oil every 3000 miles, it would be better to find the leak if there is no smoke. If there is smoke, try the additive. if you're changing every 10,000, just keep oil in it.

Q:Gasoline prices keeps getting very expensive and i‘m concerned about my budget. If oil additives really works, how much will i save on my gasoline consumption?

The company claims are one thing--what can actually be proved by testing is another. Some gas and oil additives have REDUCED efficiency when tested. The real idea is to keep in mind that if the manufacturers wanted something used in their car they would put it in there. The best thing to do is drive with a lighter foot on the gas pedal. I mean drive slower--and reduce the idling time. An idling car gets 0 miles per gallon. Turn it off. Most all vehicles have computerized firing functions. Bully Dog system did alter the mpg on trucks but that is noty available for gasoling motors--only diesel--like dodge pick up --ford pick up. Keep all of your filters clean, drive nice, that is it

Q:particularly an additive called Prolong ?

Don't waste your money on that crap. Toyota makes fantastic engines that are built to last without oil additives. Just change your oil with according to your owner's manual. I guarantee you Toyota Motor Co. is not going to recommend the use of an oil additive.

Q:About a week ago I added a bottle of some sort of gas additive(I think it said it would keep my engine dry or something) that I found in my garage which means it was old, but it was unopened. My car seemed like it did run better but I only drove it for about a minute to get home and than I turned it off and didn‘t touch it for about 3 days. When I went to start it the engine didn‘t do anything at all. The battery worked but the engine didn‘t really try to start at all.Could this be from not driving the car much right after adding this?

If it was carburetor vehicle and you have fuel injection yes it. A dry or of the old type will dry out that the injectors so they will not inject fuel I do the engine.

Q:what does constant, inverse operations, and additive inverse mean in 8th grade math terms. :)?

A chi I have curly hair. it works wonders

Q:What additives can be used in concrete during hot weather.?What additives can be used in concrete duringcold weather?

cold-- readymix has hot water and a % of chloride 1 or 2 % At the time of pour the temp should be around 64 degrees summer-- I never use additves.Just a sack mix with sometimes I have a % of air added to the mix.

Q:I have two jars of horseradish (or similar); one is natural and the other has added color / preservatives. how will this affect the taste? This answer seems rather straightforward, but I have been looking online for an article or some kind of proof. Thanks in advance.

I would bring all my movies(that counts as one! its just 25movies:P) and Probably my scooter(i mean the kind with 2small wheels and u use ur foot to gain speed its not like a motorbike) last thing would be maybe my Ipod:P i would leave all my books and my DvD player and my comp

Q:diesel additive good or bad?

it depends on the additive,anything used to keep it from jelling up in cold weather isnt to bad,and there are water reducing additives also that work alright in those,just don't add to much of anything,good luck.