All categories - 22 December 2006

15.A 0.200 L solution of .950M hydrochloric acid is used to neutralize a 10.0 g sample of calcium hydroxide in a coffee-cup calorimeter. Calcium hydroxide solution is known as slaked lime and is used in agriculture to “sweeten” acidic soils. The temperature in the calorimieter was observed to rise from 20.0*Cto29.2*C during the course of the neutralization. Assume that the density of the hydrochloric acid solution is 1.00g/mL and that the specific heat capacity of the system is the same as that for water,4.18J/g-K.Assume that only the water is available to absorb or release heat and that the reaction is at constant pressure.
2HCI(aq)+Ca(OH)2(aq)------CaCI2(aq)+2H20(I)
a.What was the limiting reagent in the neutralization reaction? Provide support for your answer.
b.How many moles of excess reagent were left over?
c.If 5.1 g of calcium chloride were obtained after the neutralization was complete, what was the percent yield?
d.What was the enthalpy change for the system in the coffee-cup calorimeter?
e.What was the heat of reaction per mole of water produced for the neutrailization reaction?

2006-12-22 10:34:38 · 3 answers · asked by kittyvamptress 2 in Chemistry

2006-12-22 10:34:35 · 12 answers · asked by screaming frenzy 5 in Philosophy

2006-12-22 10:34:33 · 8 answers · asked by Anonymous in Music

Particular DX,John Cena,Rey Mysterio, or Batista

2006-12-22 10:34:33 · 5 answers · asked by Anonymous in Wrestling

Like each of your kids you spend $xx and each of your siblings you spend $x and each of your parents you spend $xxx and so on....

My mother does this down to the dollar. I just stay in the same price range (not a dollar store gift for one and a Macy's gift for the other) and focus most on getting a suitable gift. Sometimes the *perfect* gift for one person is $20 and for the other it's $40.

Insight? Opinions?

2006-12-22 10:34:27 · 3 answers · asked by Bored Enough To Be Here 6 in Other - Holidays

WE GO TO THE SAME SCHOOL MS258

2006-12-22 10:34:24 · 4 answers · asked by Anonymous in Singles & Dating

2006-12-22 10:34:17 · 5 answers · asked by Steve G 1 in Cooking & Recipes

I had a previous zit on my nose that lasted for a while but now it has cleared up. However it has left a red blemish on my nose. It isn't a bump but it is very visible. Do you know any home remedies or products that would help fade the acne mark? Any help would be nice.

2006-12-22 10:34:15 · 21 answers · asked by HokiePokie 1 in Makeup

ive refused to wear the Marigolds for the wedding and now he's saying that its ok...as long as his ex can be matron of honour...as he says she will wear them ...no question...i feel confused now...not sure i want to marry him at all..help???

2006-12-22 10:34:13 · 22 answers · asked by Anonymous in Singles & Dating

I have an pimple right under my nose.Its hard wit an white head on top. I bust it with a needle. But it came right back as if i never bust it. Help! Can someone tell me what to do?

2006-12-22 10:34:13 · 11 answers · asked by smily face 1 in Skin Conditions

Marques Colston can also play TE. I need 3 WR and 1 TE. I HAVE NO CLUE WHO TO START.

2006-12-22 10:34:12 · 9 answers · asked by Anonymous in Fantasy Sports

whilst the new "N " proticol is backwardly compatible with "G/B" - is there anything to be gained - by only upgradeing router??

2006-12-22 10:34:11 · 3 answers · asked by nashyboyslim 2 in Laptops & Notebooks

Why do people assume that if someone is atheist that that person must automatically believe the Big Bang is true?

2006-12-22 10:34:05 · 17 answers · asked by Dr. Douche 3 in Religion & Spirituality

2006-12-22 10:33:58 · 19 answers · asked by qweezan 1 in Other - Diseases

i heard it on a music video making fun of michael jackson and i want to no what it is. no long explanation just short and to the point. and dont think youll get the best answer if you write something big and fancy

2006-12-22 10:33:53 · 9 answers · asked by lilkiz95 2 in Other - Arts & Humanities

2006-12-22 10:33:52 · 20 answers · asked by just me 1 in Marriage & Divorce

2006-12-22 10:33:40 · 26 answers · asked by Steadfast † One 6 in Polls & Surveys

okay well there is this guy and he goes out with a lot of people, he has cheated on my friend, and he flirts w/ a lot of girls. he is on my football team that i pom for and he is in my homeroom. okay well yesterday he came and sat in front of me and he was like "i think you're the prettiest girl on my pom squad." and I was like "thankyou..??"and he was like "i could look at you all day!" it was so sweet!! and then he and his friend were comparing mucles and he was like "see i can look at my mucles and you at the same time!" and i was like "grreeatt.." and he was like touching my hair and he was like. "you like me......" and i kept telling him that i dont like him. but i think i do like him!!! but he is such a player!! what should i do?? <3 please answer!!

2006-12-22 10:33:38 · 6 answers · asked by <33xoxo 2 in Singles & Dating

Inspired by The Ex -- Billy Talent

http://www.youtube.com/watch?v=r4eTtcPFETU

2006-12-22 10:33:37 · 22 answers · asked by Anonymous in Polls & Surveys

2006-12-22 10:33:27 · 3 answers · asked by Anonymous in Singles & Dating

Just got back in town and read all the posts!! God Mandy got some great advice and dissed it all. Now she is just angry in many other posts.

What is the deal??????? Why do people make many posts for the SAME information and ignore it all because they don't like it???
Every was telling her the same thing. I guess everyone was wrong.

2006-12-22 10:33:27 · 9 answers · asked by the NEWF is BACK!!!! 2 in Other - Pets

dose any one know how to make some sort of sleeping gas or like sleeping water some thing i can put on the tip of a dart so i can trankoliz cats or dogs i have made a local anamal rescue thing and i need to know how i can trancoliz something think you


plz mind the spelling errors

2006-12-22 10:33:23 · 4 answers · asked by toetoe w 1 in Other - Pets

2006-12-22 10:33:17 · 1 answers · asked by Marie 1 in Cooking & Recipes

I want to make him something special, something personal, something practical. Any ideas? He has pictures of us, and I don't have enough pictures yet of us to make a scrapbook. Maybe a message in a bottle, and a picture of him? Make him a trophy? I don't know. Please help me! Thank you!

2006-12-22 10:32:58 · 12 answers · asked by cadence_lost 3 in Singles & Dating

is it okay to eat raw cookie dough during pregnancy? i read that they pasturize the eggs, which kills the bacteria, but i'm still not sure. and if i do eat it, what harmful effects could it have on the baby?

2006-12-22 10:32:55 · 23 answers · asked by Alicia Mae 2 in Pregnancy

ok, so i bought two motorola h700 bluetooth headsets off of ebay...and they are different. They are both from the same person, same type, style, etc....but they're different looking. Is there any way to tell if one or both of them is fake?

2006-12-22 10:32:52 · 3 answers · asked by ~~kelly~~ 6 in Cell Phones & Plans

Can anyone tell me what's the differences between the three water signs

2006-12-22 10:32:50 · 9 answers · asked by michellen 3 in Horoscopes

I don't know if it is normal for Winter that my 3 painted turtles stopped eating. Is it normal?

2006-12-22 10:32:49 · 8 answers · asked by Danielle 1 in Reptiles

2006-12-22 10:32:46 · 15 answers · asked by Anonymous in Christmas

2006-12-22 10:32:34 · 7 answers · asked by Here2Share 1 in Psychology