Chemistry - December 2007

i conducted this experment for my science project. between. tap water, orange juice, and sprite soda which dissolve a pill (motrin 1b) fatest....tap water won...the problem is i dont know why does anybody know so i can do my conclusion?

2007-12-11 13:28:56 · 1 answers · asked by love* 1

see the image at this link:
http://i68.photobucket.com/albums/i11/forealms/chem.png

2007-12-11 13:03:15 · 4 answers · asked by Jared W 2

I am doing a report on Potassium and inorder to get an A i need some really weird and interesting facts on Potassium. I appreciate the help.

2007-12-11 12:45:28 · 15 answers · asked by Anonymous

how does acetic acid affect plant growth. if acetic acid can damage plants... what makes acetic acid damage plants and how?

2007-12-11 12:40:26 · 2 answers · asked by Anonymous

The specific heat of aluminum is .902 J/g Celsius. how much heat is absorbed by an aluminum pie tin with a mass of 473 g to raise its temperature from 23.00 Celsius to 191 Celsius?

Strontium carbonate can be produced by combining strontium metal, graphite (C) and oxygen gas. the formation of one mole of SRCO3 releases 1.220x10^3 kJ of energy
write a balanced thermochemical equation for the reaction,
what is delta H when 10.00 L of oxygen at 25 Celsius and 1.00 atm is used by the reaction?

2007-12-11 12:14:40 · 1 answers · asked by Anonymous

2007-12-11 11:57:34 · 4 answers · asked by cheyenne b 1

2007-12-11 11:19:51 · 4 answers · asked by Anonymous

I need help on this problems. 10 grams of lead 2 nitrate is dropped into a solution made from .25 moles potassium iodide. Keeping in mind all nitrates are soluable how many grams of the precipitate will be made?
Hint: solve for each reactant # of grams of precipitate first!


What does this all means and how do I do it. Thanks for helping me

2007-12-11 11:12:32 · 2 answers · asked by Anonymous

Calculate the PH?
[H+] = 4.78 x 10^-2M
pOH = 4.56
[OH-] = 9.74 x 10^-3M
[H+] = 1.24 x 10^-8M

can you show me step by step for them be cause i do not understand correctly how to do it.

2007-12-11 11:10:26 · 2 answers · asked by Bradley H 1

1. Calculate the average atomic mass for gallium if 60.00% of its atoms have a mass of 68.926 amu and 40.00% have a mass of 70.925 amu.

2007-12-11 11:06:34 · 3 answers · asked by Chelsey 5

Also i couldn't get this one to work out either.
What mass of air is contained in 5.36x10^5 L volume at .98 atm and 3.0x10^1 degree Celcius? The molar mass of air is 29.0 g/mol.
thanks

2007-12-11 10:55:27 · 2 answers · asked by flo_town02 1

1. molar mass
2. percent composition
3. volume at STP
4. number of particles per mole

2007-12-11 10:52:25 · 2 answers · asked by tipmdavis216 1

Example: calcium sulfate, potassium chloride, calcium carbonate, etc.

2007-12-11 10:49:02 · 2 answers · asked by Anonymous

Can you please help me find the following: what familys does the element platinum belong to? What are the number of electrons, protons, and nutrons in the element platinum?
ANd the elements characteristic properties including, but not limited to, its density boiling and melting point s

2007-12-11 09:59:02 · 4 answers · asked by Bambi'sbff 2

why or why not?

2007-12-11 09:48:26 · 7 answers · asked by Anonymous

What is dry ice, because i need some fun my own reasons, and i know i can use it but i want to know why its so special

2007-12-11 09:42:57 · 16 answers · asked by Anonymous

Please help, I am doing my own homework. It's just that one question that I can't seem to find the answer to.

Also
is only possible use of spectral analysis to be able to distinguish elements from one another?

2007-12-11 09:37:02 · 2 answers · asked by * citizen . erased * 5

For example, in DNA, would the C-G bonds take longer to break down than the A-T bonds, since the C-G have 3 hydrogen bonds each and the A-T only have 2. Thanks!

2007-12-11 09:30:37 · 2 answers · asked by ¿ /\/ 馬 ? 7

The balanced equation is

2C4H10 + 13O2 --> 8CO2 + 10H2O

What are the molar ratios for:

a) C4H10 / O2

b) O2 / CO2

2007-12-11 09:27:14 · 2 answers · asked by Anonymous

I think it was sodium hydroxide (NaOH) and I got some on a cut. I washed it out with soap and cold water like my teacher told me to. It's now like 3 hours after the fact and it still hurts. Is this bad or is it completely normal after something like this happened?

2007-12-11 09:22:15 · 5 answers · asked by B 5

2007-12-11 09:13:32 · 1 answers · asked by sweet113509 1

Is there different grades of this?

2007-12-11 09:03:14 · 2 answers · asked by Anonymous

I need balanced equations for: (#)=subscript
1. HCl
2. H(2)O(2)---->H(2)O+O(2)
3. Mg+HCl---->H(2)+ MgCl(2)
4. N(2)+3H(2)---->2NH(3)

2007-12-11 08:59:28 · 4 answers · asked by rocknroll_dragon 1

I am looking for something that is gentle on concrete, yet will still work in sub-zero temperatures, possibly down to -20. What chemical/chemical blend will best have those properties? Thank you!

2007-12-11 08:58:09 · 2 answers · asked by Bec P 2

Here it is:
When Carbon-containing compounds are burned in a limited amount of air, some CO as well as some CO2 is produced. A gaseous product mixture is 35.0 mass % CO and 65.0 mass % CO2. What is mass % of C in the mixture?

Now, for the mass of CO2 I got 46g and for CO I got 30g. Now, I have the formula, but whenever I use it I seem to get a weird answer. The formula was:
(Moles of X in formula x Molar Mass of X (g/mol)/mass (g) of 1 mol of compound) x 100

I plugged in 3 x 16/76g x 100 and got somewhere around 63%, but where does the 65 and 35% tie in!?!

If you can sort this out I would be much obliged. Thanks guys.

Merry Christmas!

2007-12-11 08:30:37 · 3 answers · asked by Anonymous

To what final volume should 100 mL of 4N H2SO4 be diluted to produce a 1M solution?

I got 200 mL H2SO4. Is this correct?

2007-12-11 08:29:50 · 3 answers · asked by katnap20 2

I have a reaction between potassium iodate and hydrochloric acid to form [ICl4]-. I need to work out a balanced equation for this.

All i know so far is this:

K[IO3] + HCl = [ICI4]- + ???

Also I believe the K is with the [ICl4]- so it could be that it is K[ICl4]- instead.

any help would greatly be apreciated.

2007-12-11 07:25:37 · 1 answers · asked by JAGDEEP S 1

2007-12-11 07:21:40 · 5 answers · asked by Lasagna delivery guy 5

I am trying to help my husband with his Hazmat Chemistry. Can you please explain to me how to cross-valence compounds to determine their formula? Thanks in advance!!!

2007-12-11 07:15:05 · 1 answers · asked by jenjennlea 1

We did an experiment where we melted and acid and then left it cool and we measured the temperature it dropped fast but then it stayed on 55 degrees for over five minutes and then it dropped again, I understand that they are the correct results - but why?
thanks for answering
xx

2007-12-11 06:56:57 · 2 answers · asked by poshpanda:-) 4