Chemistry (Science & Mathematics) - October 2006

someone please help me. i don't understand this to this extent. x.x

There are five balloons: CO2, O2, He, N2, CH4
Each are filled to the same volume at 25°C and 1.0 atmosphere pressure wit hthe pure gas indicated.
A. Which balloon contains the greatest mass of gas? explain.
B. Compare the average kinetic energies of the gas molecules in the balloons. Explain.
C. Which balloon contains the gas that would be expected to deviate most from the behavior of an ideal gas? Explain.
D. Twelve hours after being filled, all the balloons have decreased in size. Predict which balloon will be the smallest. Explain your reasoning.

i think i know how to do a little bit of it and i started to, but can i compare answers with someone on this? >.<
thanks to anyone who can help. :]

here are more gas doozies for those who like gases A LOT:
http://answers.yahoo.com/question/?qid=20061007134740AAoN4c6
AND
http://answers.yahoo.com/question/index;_ylt=AvOqVYuR7AfTqazikYw6ET3sy6IX?qid=20061007141425AAlPir

2006-10-07 10:21:18 · 4 answers · asked by sooper mouse! 2

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Elements in the same family have?

a- the same number of protons in their nuclei
b- the same number of electrons in their outer energy levels
c-the same number of neutrons in their nuclei
d- all the above

2006-10-07 10:18:33 · 4 answers · asked by Anonymous

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a few more gases problems?

Observations about real gases can be explained at the molecular level according to the kinetic molecular theory of gases and ideas about intermolecular forces. Explain how each of the following observations can be interpreted according to these concepts, including how the observation supports the correctness of these theories.
A. When a gas-filled balloon is cooled, it shrinks in volume; this occrus no matter what gas is originally placed in the balloon.
B. When the balloon described in [A] is cooled further, the colume does not become zero, rather, the gas becomes a liquid or solid.
C. When NH3 gas is introduced at one end of a long tube while HCl gas is introduced simultaneously at the other end, a ring of white ammonium chloride is observed to form in the tube after a few minutes. This ring is closer to the HCl end of the tube than the NH3 end.
D. A flag waves in the wind.

i just don't understand the wording of what they're looking for. :/
thanks in advance to anyone who can help!

2006-10-07 10:14:25 · 3 answers · asked by sooper mouse! 2

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gases problem?

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

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Are molecules held together by ionic bonds or covalent bonds?

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

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Is rubbing alcohol denser than soy bean oil?

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

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The shape of a substance is an example of ?

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

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Do the Lanthanides and Actinides share the same kind of analagous traits that Groups generally share?

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

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In a chemical equation what does the symbol (cr) stand for?

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

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What mass of methane is needed to produce 180tons of CCl4 ?

With the reaction:
CH4 + 4Cl2 --> CCl4 +4HCl
If 72% of the methane is converted to CCl4, what mass of methane is needed to produce 180tons of CCl4 ?

How is this problem done? thanks

2006-10-07 08:39:51 · 3 answers · asked by foxtrot 3

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calculate the volume of 6 M NaOH required to react completely with 10mmol of methyl salicylate.?

synthesis of salicylic acid from wintergreen oil laboratory exercises

2006-10-07 08:31:53 · 2 answers · asked by guest 2

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Is total acidity of a solution equal to actual acidity(pH)? Or is total acidity equal to the [H+]?

the total acidity is what u can find after titrating a solution. Now, this anwer is in moles/litre (M). I understand that [H+] is also in M. If [H+] is found then the actual acidity (pH, which is found using the pH meter) should be the same thing as the pH calculated using the [H+], rite? Now, is total acidity equal to the actual acidity or is it equal to the [H+]? Pls respond as soon as possible.

2006-10-07 08:26:27 · 4 answers · asked by EriseDesire 2

3 ⤊

what is fire made of?

2006-10-07 08:25:48 · 25 answers · asked by lunchontheroof 1

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chemistry help for project?

i need to do a poster presentation on a molecule that was mentioned recently in a magazine article. i need some good ideas, other ppl are doing gasoline, zoloft, and alcohol. help me get some ideas??

2006-10-07 07:30:05 · 3 answers · asked by Amanda R 2

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