Chemistry - March 2007

My friend asked me this and I know that there's gotta be a simple answer.

He said that there's no trick, no change in pressure, temp, etc.

2007-03-02 08:00:01 · 1 answers · asked by Anonymous

2007-03-02 07:58:51 · 3 answers · asked by softiesrule 2

What would be the energy (in J) required to break a proton into its fundamental constituents (quarks)?

Would the following be a legitimate calculation?

According to the wiki article on QCD matter (quark gluon plasma),
http://en.wikipedia.org/wiki/QCD_matter , the temperature required to maintain the plasma is in the order of 10^12 K. Would this be a correct assumption, given the full quote below?

"At ordinary temperatures or densities this force just confines the quarks into composite particles (hadrons) of size around 1 fm and its effects are not noticeable at longer distances. However, when the temperature reaches the QCD energy scale (T of order 10^12K) or the density rises to the point where the average inter-quark separation is less than 1 fm, the hadrons are melted into their constituent quarks"

So, using Hydrogen, as it most closely resembles a lone proton., could I use the following equation, or am i WAY OFF:

(mass of hydrogen sample)(specific heat of hydrogen)(delta T)=E

2007-03-02 07:56:56 · 2 answers · asked by other_user 2

The Ka for formic acid (HCO2H) is 1.8 × 10-4. What is the pH of a 0.35 M aqueous solution of sodium formate (NaHCO2)?

2007-03-02 07:52:56 · 1 answers · asked by Anonymous

Yes I need to find out how to remove battery acid from toys.
Thanks

2007-03-02 07:51:36 · 8 answers · asked by carla e 3

I've read that polycarbonate is unsafe and I am unsure if acrylic is the same or not. I read that San Francisco has banned polycarbonate for baby bottles.

2007-03-02 07:34:57 · 3 answers · asked by casrifkin 1

This question has been asked before but wasn't answered very well. I'd appreciate working, reasons etc.

Thanks!

2007-03-02 07:32:33 · 5 answers · asked by Anonymous

2007-03-02 07:29:45 · 1 answers · asked by Jackie G 1

2007-03-02 07:23:55 · 5 answers · asked by shortydidi03 2

im a STUCK science teacher plese help

2007-03-02 07:17:19 · 1 answers · asked by bestscienceteacherever 1

2007-03-02 07:11:53 · 2 answers · asked by Anonymous

Does the type of candle affect the burning process of a scented or unscented candle affect burning process and how fast it burns?

2007-03-02 07:06:23 · 5 answers · asked by loulou ! 3

2007-03-02 07:02:28 · 4 answers · asked by xxxEDxxxx 1

2007-03-02 06:54:10 · 8 answers · asked by xxxEDxxxx 1

Ok here is the chemical reaction! ( Cl2 + 2Br- --> 2Cl- + Br2 )

a. Cl2
b. Br2
c. Cl-
d. Br-

please help me figure out which is oxidized!

2007-03-02 06:49:22 · 2 answers · asked by xJessa Gurlx 1

2007-03-02 06:44:21 · 4 answers · asked by lenok_03 1

Calculate the enthalpy change of the following reaction between nitrogen gas and oxygen gas, given thermochemical equations 1, 2 ,and 3 .

2N(2) + 5 0(2) ----->2H(2)0(5) AH = ?

1. 2H(2) + 0(2) ------>2H(2)0 AH = -572 kj/mol
2. N(2)0(5) + H(2)0 ---> 2HNO(3) AH = -77 kj/mol
3. 1/2 N(2) + 3/2 0(2) + 1/2 H(2) ---->HNO(3) AH = -174 kj/mol

2007-03-02 06:35:44 · 1 answers · asked by Anonymous

2007-03-02 05:52:11 · 9 answers · asked by james b 1

its a volume question:

How many liters of oxygen (O2) are needed to convert 100 liters of hydrogen (H2) to water (H2O)?

2007-03-02 05:39:03 · 6 answers · asked by frickenawesomekoreanandyouknowit 2

2007-03-02 05:37:37 · 6 answers · asked by Lallitha C 1

2007-03-02 05:37:15 · 6 answers · asked by balaji n 1

i know the cation is the oxonium ion, so what is the opposite called?

2007-03-02 05:30:51 · 5 answers · asked by Anonymous

Anything would be useful.

2007-03-02 05:05:03 · 1 answers · asked by Hard Rocker 3

2007-03-02 04:59:58 · 8 answers · asked by dodge 1

I am having a hard time with this homework question. The answer bank is:

a. alpha particles
b.beta particles
c.gamma rays
d.visible light
e.All of these have the same energy

Thanks

2007-03-02 04:57:55 · 7 answers · asked by Anonymous

2007-03-02 04:32:23 · 2 answers · asked by mnaveen_1881 2

I had an upper GI xray done recently, and apparently barium sulfate is quite insoluble in water. This sort of presents a problem, as I can't flush the toilet of the barium now! The water is sort of cloudy, like the barium is hanging in suspension. Are there any household products that will cause a reaction that produces water soluble chemicals that will flush properly? I've tried bleach and that didn't really work.

2007-03-02 04:30:24 · 5 answers · asked by Anonymous

a)transparent sol
b)translucent sol
c)egg white floats
d)egg white settles


Q2.when zinc is added to sulphuric acid:
a)zinc granules change to powder
b)color ofzinc changes from grey to white
c)size of zinc is reduced
d)zinc surface becomes bright

2007-03-02 04:29:46 · 5 answers · asked by SWETA 2

question #1)
If 50 liters of nitrogen (N2) weighs 56g and 50 liters of hydrogen (H2) weighs 4.0g, how much would 50 liters of ammonia (NH3) weigh?


question #2)
Let's say 22.4 liters of helium (He) weighs 4.0g. At the same temperature and pressure, 22.4 liters of oxygen (O2) weighs 32.0g. How much would 22.4 liters of hydrogen (H2) weigh? Hint: look carefully at a periodic table.

2007-03-02 04:04:30 · 1 answers · asked by frickenawesomekoreanandyouknowit 2

2007-03-02 04:01:09 · 4 answers · asked by frickenawesomekoreanandyouknowit 2