*** Official Chemistry Thread ***

<p>was there answer : Ionization energy??? (energy to remove electrons…)</p>

<p>Ka question… 1<em>10^-1 / 1</em>10^-3…1*10^-8…</p>

<p>Oh …if NaCl put into water continuosly, then … there was… something…density is increased? density is decreased …</p>

<p>lol for that one i was running out of time so i randomly guessed like 10^-5 or -6</p>

<p>I think there were some indicator question ///// and was there heat of formation or reaction question stuff???</p>

<p>and… there was 22.4 -> 1.12 … 1/20moles… so something…something… i don’t remeber exactly</p>

<p>what was the answer for the 8g …3.4 yield???</p>

<p>which of the following is the most change of heat?
(a)something…c=…
(b)something… c=…
(c) mercury… c= value was really low…
(d)…
(e) …</p>

<p>I put C</p>

<p>c= specific heat</p>

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<h1>==============please check the answers from the first page==========</h1>

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<p>I also put mercury for the specific heat one.</p>

<p>yes i got 3 TTCEs and i think i skipped one so there might be 4…</p>

<p>damm it i didnt put mercury</p>

<p>what did u guys get for the when you are having lab with acids and base or something , one of the followings are NOT likely to be used… it was the something i dont remember the choices were like buret erlenmeyer flask and indicator? idk</p>

<p>I know the easiest question :slight_smile: it was “modern periodic table is arranged in increasing…”</p>

<p>atomic stupid number</p>

<p>Siva_07, </p>

<p>“what did u guys get for the when you are having lab with acids and base or something , one of the followings are NOT likely to be used… it was the something i dont remember the choices were like buret erlenmeyer flask and indicator? idk” </p>

<p>it is “crucible”… if you go to page 3 or …some page… there is answer</p>

<p>Titration: crucible
4atm and 1 atm: 4atm
Gases collected: hydrogen and oxygen
Both ionic: NH4Br
SO3
0.05 x NA
Hydrogen evolved from the reaction between Zn and HCl ( liquid–> gas is not a chemical change )
Na: electrical conductivity increased</p>

<p>HiLine, can you please check other answers?</p>

<p>iron rusting is an example of oxidation</p>

<p>yeah, i agree</p>

<p>but i made a very very stupid mistake…</p>

<p>i said the reaction that produces precipitate involes a redox reaction…can’t believe i was thta stupid.</p>

<p>what? I think the question was … which of the following can not be a redox reaction…wasn’t it?</p>