SOme chem, questions i dont understand cause i was absent?
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1)typical atmospheric pressure is 1atmosphere or 10^2kilopascals or 760mmHg.\n2)Atmospheric pressure decreases with altitude.So external pressure decreases.As preessure decreases volume increases(if the temperature change is insignificant)\n3)Water pressure increases with depth (P=h*density*g).So as external pressure increases the volumme decreases.\n4)Here we assume that the temperature doesn't change in the process.Use Boyle's law PV=P'V'\nso 760*V=1.30*0.21\nwhich gives V=3.59*10^-4L
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Send me an IM at jammin246 on yahoo I'll walk you through any chemistry problems you might be facing.
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Look up in Hand book of chemistry and mathematics, you school library will have it. Your professor should also have it.
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first one: no, your missing an Mn on the right.\nSecond one: yes\nthird one: no, you're missing 5 ammonia on the left\n\nthe rest as standard metathesis reactions, use the ones u've done as a guide
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Hey, Blond fuss?  Good luck if U can't find help @ this late hour. Keep working on it.  Something from what U learned so far must b in your head - find it. No one else working on this problem awake?\n  I'm tired (12:35 a.m. here @ UMAss Amherst).  Had 1st-yr Chem 100 in 1978, not Chem 1111 !! Barely remember orbitals.  U do have books there, don't U?   Library maybe not open now as ours is.    \n Aces 2 computer. So U have awhile 2 figure it out.  Good luck.
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I'm only helping you because you seem to have done the rest of the questions!\n\n1. Butene is C4H8\n\n2. N and O are very close in the Periodic Table\n\n3. NaBr contains a metal and a non-metal\n\n4. Your diagrams have come out as unintelligible. Look for a molecule with a C=C double bond and no oxygen.\n\n5. CO2 contains non-metals only.\n\n6. Ethane is C2H6, and ethene is C2H4.  So they both contain 2 C atoms.\n\n17. See 3.
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google search chemistry tutorials . there are thousands of sites\nchemtutor.com\nhighschoolace.com\nchemistrycoach.com\nechemistryhelp.com\nare just some of the few that i use.\nthey're really helpful!
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something about chemistry
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i'm sorry. i'm taking O-chem but we didn't talk about cartesian vectors in our class. it's mostly nomenclature and synthesis.
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Q1)\nCa3 (PO4)2  (MW)molecular weight = 3*40 + 2 * (95) = 310 the oxygen weight is 16*4 = 64 .so % of O is (64/310) *100 = 20.6%\n\nQ2)\nSO4 (NH4)2 ---> MW = 32+4*16+ 2*18 =132 Mass of sulfur 32 \nhence  % S = 100*32/132 =24.2\n\nQ3) \n\nFe2 (SO4)3 ----> MW = 56*2+96*3=400 \n\n% of iron 100*112/400 = 28%
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Oh no, chemistry, sorry, the devil(my chemistry teacher) would be ashamed of me...I failed chemistry and had the same teacher again. I ended up passing with an 87. Sorry that was a whole year ago. I don't remember.
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http://www-ec.njit.edu/~skawinsk/chem243/chap11/chap11.htm\nthis may help–near the bottom
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ask in chemistry category
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Sorry but to divulge Genters location would be futile.  Attempts made at this, will result in your molecules being vaporized and then transformed into 46c4 carbon based atoms, which will then be erased
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chemical equations is an important chapter of chemistry and it would take up a lot of space to explain properly given that you don't say exactly what you need. so  you can go to the adress below. that should help.
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yup.  Email me with any other chem questions at\nfortitudinousskeptic@yahoo.com\nI teach chemistry.
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Do you still have your old textbooks and tests?  Go through your books and do some of the problems.  Look at each chapter in the book and see what stuff is highlighted by the editiors, like the theorems and identities.  Then try to do some of the problems.\n\nWell, this is what I would do (and have done in the past) to get myself back up to speed.  Good luck, and congrats on your engineering curriculum!\n\n~ ♥ ~