Q:Help . Please. What happens when something is in brackets when you are balancing the equations ?

the NO3 is the polyatomic ion nitrate. when working with polyatomic ion, you cannot change the subscripts in them so in order to say that you have more than 1 of a polyatomic ion, you have to use parenthesis like the example you gave in the example you gave, the would be 2 polyatomic ions (nitrate ions). hope that helps!!. good luck!

Q:I just bought a Shimano LX Crank and am looking to get a bottom bracket for it. I've been looking at external bottom brackets (and this seems like a dumb question) but I don't know how it will work if I get one because I don't have the axle thing that connects the two arms and runs through the bottom bracket. What is that thing called and where can I get it?

External BBs are specific to the types of cranks. On Shimano chainsets look for ones that mention Hollowtech II

Q:A bracket fell off my tooth.The wire is just hanging out there.Its poking me.its really annoying.What should i do?Will my teeth get messed up over this one broken bracket?My next appointment is in 6 weeks.should I go sooner or is it not a big deal?

Bracket For Braces

Q:I want to know if there has ever been a perfect bracket submitted and verified (by whomever) since the beginning of the NCAA Men's Basketball Tournament.

There are usually some people out there with a perfect bracket, but I wouldn't expect a whole lot. I am doing okay, I'm in the top 8% using ESPN, I have two losses, so I'm not doing bad.

Q:Ca(OH)2 + HNO3 --- CA(NO3)2 + H20It is the brackets that are confusing me, do they mean there are two calciums?Help it greatly appreciated

Ca(OH)2 + 2HNO3 ---Ca(NO3)2 + 2H2O

Q:10 minutes ago I was eating an apple, and I felt something weird. Then I noticed that one of my brackets was loose, it's really loose! What should I do, it's night right now so Any suggestions? Please help!!! Thanks

Hi, I suggest if your orthodonist has given you some wax, to put it over the loose bracket. That way it ensures that it won't move around in your sleep. Loose brackets aren't usually dental emergencies but I would recommend calling your ortho. He will decide whether or not you should book another super quick appointment. He'll just glue it on again. Don't worry - these things happen all the time! Happened to mine all the time, really. Good luck.

Q:I ordered a twin bed set that came with a bed frame and brackets. I put the frame together but don't understand why I need the brackets? Are they to connect a headboard? I don't have a headboard, so do I still need the brackets?thanks!

What are brackets for a bedframe for? for a bedframe. learn grammar.

Q:are you saposto floss around ur brackets and i try to floss in between my teeth and they are so tight that it hurts should i still floss

you still have to floss when you have braces and the more you do it the less it hurts. Becuase i had braces and everytime i went they told me off cos i didnt floss! then as soon as i started flossing the next time i got them off :D and flossing will decrese ugly red puffy gums! xx

Q:Frenchmen diappeared, Del Potro, Robredocasualities.Except the familiar 4 plus are firm on the ground !How are you doing and your scores ? Mine ? pretty bad

gosh, im on 30 points at the moment, and my current rank is 3378th out of 11623. i had hewitt over safin (cos hewitt won a clay title last week, so i thought he was on a high, oh well). butmonfils, delpo, simon, those are upsets to me, i thought those 3 guys were all at least decent on clay. seems like the only quarter which im doing well for is federer's quarter. GT, i agree with u that MC is definitely strange this year.

Q:Example:2y / (y-1)

You can't divide with the example you've given. In the example you used, 2y and (y-1) are two different things, and therefore can't be divided. It's kind of like trying to divide a number by a letter. Just can't be done because they're not the same thing, so unless you know what the variable is and can change the whole problem to just numbers, the answer is simply 2y/(y-1) The rule is that the denominator and numerator have to be the same format to divide, so when the denominator is in brackets then you'd have to do something to either put the numerator in brackets as well, or else remove the brackets from the denominator. This is usually done by factoring either the numerator or denominator in some way. If it can't be factored in a way that will work, it means that the problem can't be simplified anymore. I hope this makes sense.