Qualification > Sciences
Chemistry Help HERE ONLY !!
Kim:
--- Quote from: LilWayne on May 30, 2009, 02:21:50 pm ---
--- Quote from: kim on May 30, 2009, 02:14:01 pm ---hey guys wassup?
ok i hav a few questions
1-how does the structure of metal explain why it is malleable?
2-suggest an explanation why exposure to atmospheric pollution changes basic lead (11)carbonate into lead(11)sulphate
3-ethanol can be made from starch.this can be broken down by enzymes to simple sugars with formulae of the type shown
ho-(box)-oh
what other method changes starch into simple sugar?
sum1 help me
--- End quote ---
1) cuz when force is applied, the ion layers slip, but the delocalized electrons move into new positions preventing shattering
2)because atmospheric pollution may contain sulphuris acid( in acid rain) which reacts with the lead(II) carbonate forming
lead(II) sulphate + water + carbon dioxide
3)by acid hydrolysis ( boiling the starch with acid)
--- End quote ---
i cannot thank you both enogh u too NID404!!!!!!!!
i dunno wat i would haver don't withoiut this site!!!!!!!!!!!!!
again thank you :) ;) :D ;D ::) :-*
nid404:
A diol or glycol is a chemical compound containing two hydroxyl groups (-OH groups)
so sugar is a diole but all dioles are not sugars. I hope u get it
godfather93:
--- Quote from: LilWayne on May 30, 2009, 02:17:19 pm ---
--- Quote from: godfather93 on May 30, 2009, 02:12:47 pm ---ok, here's a question from me: how do you make soda lime glass? (no looking at the book! ;))
--- End quote ---
hahaha, wats soda lime glass, i know hot to make glass, but not soda lime glass!!!!!!!!!!!
for glass: add limestone, sand and soda (if thats wat u mean by soda lime glass) to a very hot furnace
the materials react together, and form a hot liquid, and then the liquid is removed and shaped into many different products
--- End quote ---
soda lime glass is made by reacting limestone, sand and sodium carbonate together with the glass to be recycled at 1500oC.
your answers was pretty close.
@nid - yeah, it's the time to sit back and enjoy some soda pop!
nid404:
--- Quote from: godfather93 on May 30, 2009, 02:38:29 pm ---
--- Quote from: LilWayne on May 30, 2009, 02:17:19 pm ---
--- Quote from: godfather93 on May 30, 2009, 02:12:47 pm ---ok, here's a question from me: how do you make soda lime glass? (no looking at the book! ;))
--- End quote ---
hahaha, wats soda lime glass, i know hot to make glass, but not soda lime glass!!!!!!!!!!!
for glass: add limestone, sand and soda (if thats wat u mean by soda lime glass) to a very hot furnace
the materials react together, and form a hot liquid, and then the liquid is removed and shaped into many different products
--- End quote ---
soda lime glass is made by reacting limestone, sand and sodium carbonate together with the glass to be recycled at 1500oC.
your answers was pretty close.
@nid - yeah, it's the time to sit back and enjoy some soda pop!
--- End quote ---
right. guys uve gotta relax.
chalo ive gotta go and make me fresh lime soda. this heat's killing me. My AC too cannot beat the heat but im sure the fresh lime will help cool my body. ;)
buy guys
Kim:
hey u guyz know those questions where they give the boiling points of sum alkanes and then ask to predict the boiling pt of one of them
how do u dat?
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