Chemistry - March 2007

2007-03-16 14:53:36 · 1 answers · asked by Anonymous

Carbon-14 has an atomic number of 6. When it decays it emits a beta particle. What is the atomic NUMBER of the new nucleus?


When carbon-14 decays and emits a beta particle,what is the atomic MASS of the new nucleus?

2007-03-16 14:50:41 · 2 answers · asked by dex4774 1

Hereres your chance to say anythig and everything we invite everyone espicaly the leader board like Richard or crazy speak your mind about yahoo anwsers or anythig

2007-03-16 14:48:24 · 5 answers · asked by Anonymous

1. 1.0g NaOH and 50mL H2O
NaOH(s) + H2O(l) --> Na+(aq) + OH-(aq) + H2O(l)

2.1.0g NaOH and 50mL HCl of 1.0M
NaOH(s) + HCl(aq) --> NaCl(aq) + H2O(l)

3. 25mL NaOH and 25mL HCl
NaOH(aq) + HCl(aq) --> NaCl(aq) + H2O(l)

so basically, 1. solid base and water, 2.solid base and acid, 3. base solution in acid
(do bubbles get formed for everyone of them, which one has more bubbles or any observation)

2007-03-16 14:41:54 · 2 answers · asked by Anonymous

I'm having a tough time with all of it but this I just haven't been able to figure out. This isn't homework just prep for a test.

A reagent bottle is labeled 0.450 M K(2)CO(3)

c) Assuming no volume change, how many grams of K2CO3 do you need to add to 2.00 L of this solution to obtain 1.000 M solution of K2CO3?

The answer in the back of the book is 152 g K2CO3. I've been trying for the life of me to get this.

2007-03-16 14:38:47 · 3 answers · asked by tangsausagees 3

What is the balanced equation when tetramminecopper (II) sulfate monohydrate is heated?

2007-03-16 14:38:20 · 2 answers · asked by watercurves 6

What is the balanced chemical equation of the reaction between tetramminecopper (II) sulfate monohydrate and hydrochloric acid? I think it should produce a salt and water, but don't know which salt it makes. Thanks!

2007-03-16 14:33:55 · 2 answers · asked by watercurves 6

by none mechanical means.
For use in a campervan.

2007-03-16 14:29:07 · 9 answers · asked by Ray S 1

2007-03-16 14:27:31 · 1 answers · asked by Industrial.Training.Center/SINDE 1

I saw this video on youtube, this guy turns a bottle of beer into frozen ice in a matter of seconds,here's the link http://youtube.com/watch?v=SfkHS_58yvs
i also saw someone did that to a water bottle before.
can someone tell me how to do this?

2007-03-16 14:09:28 · 1 answers · asked by invisibleeffect 1

Using the Ideal Gas Law (PV=nRT) can someone explain to me why the wind blows?

See, I know wind has something to do with the PGF, Coriolis Force and Friction...but I'm not precisely sure how the Ideal Gas Law explains it.

2007-03-16 14:05:12 · 6 answers · asked by Katie M 1

How many grams of salt, sodium chloride, are contained in 1000.0 mL of ocean water, if the concentration is 0.60M?

2007-03-16 13:50:04 · 3 answers · asked by moonbaby29_us 1

such as chromate is red, zinc is blue in powder form i think where else can i go?

2007-03-16 13:47:23 · 3 answers · asked by lisa m 2

a) 0.100 L of 0.250 M CH3COOH + 0.050 L of 0.250 M NaOH


b) 0.100 L of 0.250 M CH3COOH + 0.050 L of 0.250 M HCl


c) 0.050 L of 0.250 M CH3COONa + 0.100 L of 0.250 M HCl


d) 0.100 L of 0.250 M CH3COONa + 0.050 L of 0.250 M HCl

Thanks in advance.

2007-03-16 13:46:47 · 1 answers · asked by Saint L 2

Gold can be separated from sand by panning or by a sluice box. In panning, water is mixed with the sand and the resulting slurry is swirled in a shallow, saucer-shaped metal pan. In the sluice box technique, running water is passed over an agitated sand gold mixture. What physical technique make this separation possible.

2007-03-16 13:44:21 · 2 answers · asked by Jessica 3

its hilarious!

2007-03-16 13:39:39 · 5 answers · asked by Anonymous

i have to find out 5 properties of aluminum five jobs that requiure you to practise metal work and 5 uses for aluminum no links please

2007-03-16 12:58:26 · 3 answers · asked by elpruprulesnoone 3

1. A gas occupies a volume of 0.500L at a pressure of 730 mmHg and 25 degree Celsius. What will be its volume when the pressure is increased by 10% and the temperature is lowered by 5 degree celsius??

2. A mixture of 0.200g of Helium and 0.200g of H2 is confined in a vessel of volume 225 mL at 27 degree celsius. What is the partial pressure of each gas? What is teh total pressure of teh gaseous mixture?

3. 2KClO3(s)-> 2KCl(s)+3O2 (g) Calculate the volume of O2 produced at 25 degress celcius and 630mmHg when 50/0g of KCl)3 undergoes decomposition.

2007-03-16 12:51:06 · 4 answers · asked by Preeya 5

2007-03-16 12:32:42 · 8 answers · asked by ibid 3

When an elctirc beater or a hand beater whips a product, air is incorporated into the product. Whipping egg white causes it to become foamy. If you leave whipped egg white untouched, over time it will lose its foaminess and return to liquid state. Explain this please...someone...anyone...
i just need to know the chemistry behind this.

2007-03-16 12:24:19 · 3 answers · asked by Tharma 2

this is for my science homework and i really need help on it!!

2007-03-16 12:09:58 · 7 answers · asked by Anonymous

At saturation, 5.5 x 10-4 moles of PbI2 have dissolved in 1 liter of water. What is Ksp for PbI2 at this temperature?

someone tried to explain it but it doesnt make any sense? so help please

2007-03-16 11:51:52 · 1 answers · asked by MEB 2

I am wondering if there are any standardized colors for atoms used in molecular models.

I need the colors for: chlorine, nitrogen, phosphorous, fluorine and sulfur.

2007-03-16 11:37:41 · 2 answers · asked by Zero 3

2007-03-16 11:33:53 · 17 answers · asked by dave j 2

2007-03-16 11:32:14 · 2 answers · asked by Anonymous

2. what is the characteristic odor of the ester produced?

Preparation of ethyl ethanoate, an ester

2007-03-16 11:21:48 · 5 answers · asked by jarock nikeebwoy 1

2007-03-16 11:18:46 · 4 answers · asked by Neicy 1

My friend shocked me today and said he got it from inside a lighter, is this true? if so what lighter is it from?

2007-03-16 11:12:12 · 2 answers · asked by ♣Kermit the Frog♣ 4

im doing a report on chemical reactions but my teacher said that the subject was to broad to fit it into one essay. so how do i squeeze it into one report?

thanks

dreamer

2007-03-16 11:08:29 · 2 answers · asked by that one girl from that one band 3

I need help or a good website to go to learn more about hybridization, knowing the size of ions and resonance structure.

2007-03-16 11:04:01 · 1 answers · asked by Anonymous