Science & Mathematics - 7 October 2006

2006-10-07 09:51:22 · 5 answers · asked by Denise C 1 in Engineering

2006-10-07 09:51:04 · 2 answers · asked by shawntaelsey123 1 in Other - Science

2006-10-07 09:48:13 · 11 answers · asked by Lori Gail 1 in Earth Sciences & Geology

2 HCOONa + H2SO4 => 2 CO + 2 H2O + Na2SO4
A 0.964 gram sample of a mixture of sodium formate [HCOONa] and sodium cholride is analyzed by adding sulfuric acid. The equation for the reaction for sodium formate with sulfuric acid is shown above. The carbon monoxide formed measures 242 mL when collected over water at 752 torr and 22.0°C. Calculate the percentage of sodium formate in the original mixture.

also... another quick question [btw, this is another problem]:

Volume of sample: 90.0 mL
Temp: 25°C
Atmospheric pressure: 745 mmHg
Equilibrium Vapor Pressure of H2O [25°C]: 23.8 mmHg

A. Calculate the number of moles of hydrogen gas collected.
B. Calculate # of molecules of water vapor in the sample.
C. Calculate the ratio of the average speed of the H molecules to the average speed of the water vapor molecules in the sample.
D. Which of the two gases, H2 or H2O, deviates more from ideal behavior? Explain your answer.

i did parts A and B, but C and D just lost me there.
thanks! :D

2006-10-07 09:47:40 · 1 answers · asked by sooper mouse! 2 in Chemistry

2006-10-07 09:47:09 · 4 answers · asked by Anonymous in Chemistry

2006-10-07 09:45:35 · 12 answers · asked by Anonymous in Weather

i have two coins in my hand.their value is = to 55¢ and one of them is not a nickle. what are the two coins. explain

2006-10-07 09:41:54 · 5 answers · asked by ░▒▓█▓▒░ 2 in Mathematics

It has always been in the back of my mind.

2006-10-07 09:40:58 · 23 answers · asked by bananaaaaassss!!! 3 in Geography

2006-10-07 09:40:03 · 6 answers · asked by shawntaelsey123 1 in Other - Science

2006-10-07 09:38:15 · 3 answers · asked by joeklum04 1 in Biology

If so (out of the following four subtances), would dish soap would sit at the bottom, with water next, then the alcohol, and then the oil because of their densities?

2006-10-07 09:38:05 · 3 answers · asked by xscarredapplex 1 in Chemistry

2006-10-07 09:37:25 · 1 answers · asked by shawntaelsey123 1 in Earth Sciences & Geology

a - a physical property
b - a chemical property
c - mass
d - none of these

2006-10-07 09:32:30 · 6 answers · asked by cantfindem 1 in Chemistry

a - 100,000 kg x m/s
b - 100kg x m/s
c - 10kg x m/s
d - .001 kg x m/s

2006-10-07 09:30:21 · 7 answers · asked by cantfindem 1 in Physics

and how can you tell them apart in jewelry?

2006-10-07 09:28:38 · 5 answers · asked by Jazz 2 in Earth Sciences & Geology

The rovers have gone to Mars, but why not people?

2006-10-07 09:28:29 · 22 answers · asked by tweety7892345 1 in Astronomy & Space

With all these fast-food chicken places, i was thinking a week

2006-10-07 09:27:45 · 13 answers · asked by what's up 1 in Zoology

a - highest frequency and shortest wavelength
b - lowest frequency and longest wavelength
c - highest frequency and longest wavelength

2006-10-07 09:27:25 · 5 answers · asked by cantfindem 1 in Physics

I understand that generally they have analogies with Scandium and Yttrium--but how about with each other--and within the Long Series themselves, are there ordinal analogies--for example are there analogies specifically between, say, Promethium and Neptunium or, say Cerium and Thorium--that other, ordinally different Long Series elements might not share? Or are there such intra-Long Series analogies where the kossel shell counts are also more analagous?

2006-10-07 09:26:49 · 1 answers · asked by Zodos 1 in Chemistry

If there is a semiconducting shell with negatively charged electrons and a material inside the shell with positively charged holes, the material has a radius no greater than the inner radius of the shell, how can i find the current in a semiconductor given that i know the electron current density and the hole current density?

2006-10-07 09:26:14 · 3 answers · asked by thomthum2000 2 in Physics

2006-10-07 09:25:04 · 4 answers · asked by cantfindem 1 in Chemistry

2006-10-07 09:25:04 · 1 answers · asked by shawntaelsey123 1 in Earth Sciences & Geology

2006-10-07 09:22:54 · 2 answers · asked by shawntaelsey123 1 in Earth Sciences & Geology

solve 3x - 2y = -6. if the domain is ( -2, -1 ,0 ,2 ,3 )..i dont understand h0w to do this can someone please explain to me or something..thanx to the people that answer my question!!
= ]

2006-10-07 09:21:27 · 5 answers · asked by Anonymous in Mathematics

When 2 people fart at the same time, the world will explode.

I heard this around 4th grade, and I just remembered it.
Anyways, is it true?

2006-10-07 09:09:54 · 25 answers · asked by Anonymous in Earth Sciences & Geology

a- they do not need a medium to transfer energy
b- they travel faster
c-they are transverse waves
d- all of these
e- none of these

2006-10-07 09:09:27 · 8 answers · asked by Somanyquestions 1 in Physics

2006-10-07 09:07:00 · 4 answers · asked by dave 1 in Earth Sciences & Geology

a- diffraction
b- refraction
c- reflection
d- convection

2006-10-07 09:06:26 · 3 answers · asked by Somanyquestions 1 in Engineering

2006-10-07 09:05:14 · 12 answers · asked by M Jay 1 in Medicine

I saw it very closely - from 3 feet for 5 seconds in an isolated patch of tall grass.

I was clearing it of summer stuff & I'd lifted something out. It was standing in a bare spot where what I removed had prevented the grass from growing.

The dogs were standing nearby, but before I could get them tracking on it, I looked back down and it was gone.

I didn't have a camera on me & I'd left my gun at the last spot, so that's best desciption I can give.

The front 1/2 of (the part with the head), was red and the back was black or very dark brown.

The body shape was almost cylindrical except for the head and tail (both medium). I'd say it was 2" in diameter and 6" in length (excluding tail).

I've lived here 7 years and, also 45 miles away for 24 years (starting @ age 0), and I've never seen anything like it before.

This is a argricultural & hunting area with crops, ponds, pasture, woods, & small river. I was the only resident around yesterday within about 300 acres.

2006-10-07 09:03:25 · 10 answers · asked by Jon W 5 in Zoology