hypervalent_iodine

! Moderator Note Thread closed, pending staff review.

! Moderator Note Moved to homework help abezface, could you please provide us with your working and perhaps members can point out where you may have gone wrong.

! Moderator Note Enough. Rich_A12, if you have the humility to recognize that you 'can't give the math', that this is 'only a theory' you came up with like, 48 hours ago (please, by the way, look up what a scientific theory actually is; what you have is not a theory) and that you're 'not a chemist', then you also need to recognize that maybe, just maybe, the criticisms people have given you here have much more merit that what you're presenting. The problem isn't that you're not presenting this in whatever you seem to think the stereotypical way is, it's that you appear to not be making any effort to present this convincingly at all. If you've come here with preconceived notions that you have no intention of being swayed from, as you seem to have, then I'm afraid that you have come to the wrong place; this is after all a discussion forum, not a crackpots anonymous preaching post. So, here's what you need to do. 1. Present some actual evidence. Note, that this does not include hack job YouTube videos. We want actual data and actual science. 2. Stop ignoring people, calling them bonkers or stupid or accusing them of being snobs simply because they've asked you to provide evidence to support what you're saying. Doing otherwise is disingenuous, and as it happens, against our rules. If you cannot do this, this topic will be closed and / or your account considered for suspension. Please also read these: Speculations Forum Rules ScienceForums.net Rules Science Forums Etiquette This mod note is not up for debate in thread. If you have a question, or believe this was misplaced, use our report feature (found at the bottom left of each post), or contact staff via PM.

The answer for the last one *is* 2.5 moles/L, so I'm not sure where 157.5 is coming from (unless you've given the question incorrectly). As Fuzzwood said, you should always have a look at the units. If you know that you have 0.5 moles in 0.2 L of solution, and your answer needs to be in moles per L, then it's simply a case of dividing the number of moles you have by the given volume, which in this case is 0.5 moles / 0.2 L = 2.5 moles/L.

That all seems fine, although the use of cm3, etc., is a confusing choice of units. I'm not sure why you need the molar mass in these calculations? If it's asking you for concentration and you're told you have 2 moles in 4 L of solution, the answer is simply 2/4 = 0.5 moles/L. Did you possibly write the question incorrectly here?

! Moderator Note Come on, rigney, really? Don't insult other members, please.

...Wut?

! Moderator Note Given that I have already issued a stern warning about these types of posts here, this probably doesn't need an extra warning. However, for the sake of people reading this who didn't happen upon that post and for the sake of completeness, I'm not letting this go without a mod note. No, no and a thousand times no. Go back and please read our rules and ensure that you are mindful of them (and our etiquette guidelines) when posting in future. These sorts of posts are absolutely not acceptable here.

! Moderator Note Anders, This is becoming a case of soap boxing. You have made your points, which members here have refuted and you seem to have completely ignored. You cannot possibly claim that those bulbs cannot be purchased, when swansont posted you a link to a site that sells them. Please start engaging in honest discussion or this thread will be closed.

! Moderator Note Anders, Staff will not tolerate any more offensive and discriminatory slurs against any group or groups of people. You have been warned about this before and it will stop or you will be facing suspension.

! Moderator Note Anders, Please try and keep your posts on topic. And a reminder of section 2.1 of the forum rules:

! Moderator Note Thomas, This is just a reminder that we have rules against racial slurs, or slurs against any person are not permitted here, as per section 2.1 of the forum rules: ! Moderator Note Please keep the above in mind while using SFN.

! Moderator Note Due to the number of reports about the above mod notes, staff thought it best that we clarify a few things. Firstly, we are not penalizing pmb for being wrong. This is an ongoing issue where threads are constantly being hyperfocused on the issue of 'what is mass' to the point of them being off topic. Given the number of threads in which this has occurred, it is frustrating for staff and it is just as frustrating for people reading the thread, as it largely obfuscates the main questions asked. Staff are tired of having to clean up these threads, when there is already a perfectly good thread created for the sole purpose of housing such discussion. While the above mod notes may have seemed overly harsh (it possibly could have done with better wording on my part) and while pmb's comment may seem on topic, prevention is better than cure and we would rather curb the tangential discussion now than clean up the pages of off-topic discussion later.

! Moderator Note zhou jian, I'm going to ask you again to please stop opening multiple threads on the same topic. Thread closed.

! Moderator Note Maybe I should have been more clear. Do not derail this thread by discussing mod notes. If you have a problem with them, please use the report feature located at the bottom left of each post to bring it to the attention of staff. Any more responses to mod notes in this thread (by anyone) will be removed.

! Moderator Note This isn't up for debate in thread. If you have an issue with a mod note, please raise it using the report feature. Any more off-topic replies will be removed.

! Moderator Note pmb, Though I understand mass seems to be a buzz topic for you, please be advised that you already have a topic on this and that hijacking other threads with off-topic discussion won't be permitted. Please address the topic in the OP, or move your discussion to somewhere else.

Mohammad Shafiq Khan has been suspended for 7 days for persisting in the reopening of closed topics and generally for ignoring the many, many warnings given by staff as well as the points and questions given by other members.

! Moderator Note This has gone on long enough. Thread closed. Also, Mohammad, I would like to officially welcome you to the banned/suspended users thread. Enjoy your holiday.

Caught a snap of a wild column a while back: You'll also notice in the background to the right, the rare and elusive freshly distilled methanol.

! Moderator Note Mohammad, Since you persist on ignoring the requests staff have made of you via PM and the requests members have made to you, I am closing this thread. You are not allowed to reopen this topic. If you have any questions regarding this note, please use the report feature to alert your concerns to staff.

! Moderator Note dapifo, I wasn't able to find any post with an attachment on it, but there is nothing stopping you from trying to attach the files again.

! Moderator Note Bart (and others), Please direct comments to the existing thread on this topic: http://www.scienceforums.net/topic/66609-gravitational-time-dilation/ Bart, I would ask that you would please stick to the one thread per topic rule in future. Thread closed.

! Moderator Note alpha2cen, For the purposes of discussion, you'll have to start being a bit more coherent. This thread will be closed if you can't start making sense and respond to people properly.

! Moderator Note dapifo, You already have a thead on this. Please keep your comments restricted to there and please keep the non-mainstream science to speculations.