could you help me please

can you tell me what is the major factor that affects the rate of a heterogeneous reaction

any ideas..

thank you

I have a few parts that need polishing and anodizing.

-First is an eaton supercharger. It has a stock grey powdercoating on it. I need the case and the snouth polished.
-Next, I have a "midplate." It is a relatively small piece compared to others listed. It goes between my intercooler and lower intake. I need this piece polished.
-Next, I have a lower intercooler intake for a 5.4 liter F150. This is a big piece. I need it polished...just externally
-I have a belt tensioner that I need polished.

hey guys...
i am in deperate need of help...
we did a practical in chemistry class about two weeks ago and tomorrow we need to hand in a report. problem is i was messing around durning the practical and basically have no clue what to do.

Practical outline:
You are required to show the difference in chemical reactivity between alkanes and alkenes and investigate unknown substances in terms of degeree of saturation.

chemicals:
Cyclohexane and Cyclohexene
bromine in CCl(4)
margerine in two types
Minaral Turpantine.

Is it possible for someone to discover a new element that would be placed between carbon and nitrogen? explain.

I'm having trouble converting this!! Help!!

How many grams of NaCl do I need to make 500 mls of 0.5M NaCl solution?

hi. im a Junior in high school and we were given a lab that i need help on.

we are going to be given 10 grams of an ore that contains a mixture of Sulfer, iron, and siver nitrate and we have to figure out how to extract pure silver on it...

but we only get once chance to do so so.... if we mess up were pretty much screwed.
so, if anyone knows how to go about doing that please tell me.
thanks:)

My physics teacher make up a tricky question.

Olympus mons is a shield volcano on the planet mars. about three times the height of mt. everest, it is the largest volcano in the solar system. A Hershey's kiss is a yummy candy that is sort of mountain shaped. How many moles of Hershey's kisses would it take to equal the volume of olypmus mons?

I think olypmus mons's volume is about 6mil km well its 100x the volume of Mauna Loa. so how do i find the mole of a hershey's kisses to equal the volume of olypmus mons?

Im in year 12 and i got an homework/research about 'breaking down NaCl' into Na and Cl
Ive been searching through Yahoo and Google but the best information ive found is : you can separate salt through electrolysis- but it does not tell you how.

Can anyone help me with the process?

I've recently been doing micro and macrostructures. This seems a little ignorant of me but I understand that you can divide all substances up into crystalline, polycrystalline and amorphous structures. How would you describe Aerogel? What is it's structure like and how does that determine its extraordinary properties. I've only just started college so be detailed but nothing so technical that I won't understand please.

Thanks for any help or advice, Andrew Sellick

Alright so I have a quiz on stoichiometry tomorrow and I am completely lost.. I would really appreciate some help. Thanks

Here are the problems:

How many moles of sodium will react with water to produce 4.0 mol of hydrogen in the following reaction
____Na(s)+____H20(l)--->____NaOH(aq)+____H2(g)

Known:
Unknown: What type of problem is this? mole to mole??

How many grams of lithium chloride will be formed by the reaction of chlorine with 0.046 mol of lithium bromide in the following reaction.
2LiBr(aq)+ ____Cl2--->2LiCl(aq)+___Br2(l)
Known: