Science & Mathematics - 15 November 2006

A mixture of cyclopropane gas and oxygen is used as an anesthetic. Cyclopropane contains 85.7% C and 14.3% H by mass. At 50.0 degrees C and 0.984 atm pressure, 1.56 g cyclopropane has a volume of 1.00 L. What is the molecular formula of cyclopropane?

I don't know what formula to use that would give me a molecular formula...does anyone know what to use in this case?

2006-11-15 08:43:52 · 2 answers · asked by Anonymous in Mathematics

like this
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2006-11-15 08:42:36 · 5 answers · asked by Anonymous in Mathematics

What country where you own land is it all the way to the center of the earth. Which means no tunnels or anything can be built under your land?

2006-11-15 08:39:22 · 1 answers · asked by Deens 2 in Geography

why are chalk and talc insoluble?
another question: why does table salt, sugar, baking soda, and different substances dissolve in different amounts for the same set of condtions (same volume and temp.)? thank you so much i really need help

2006-11-15 08:37:38 · 2 answers · asked by anonymous 2 in Chemistry

2006-11-15 08:35:38 · 2 answers · asked by Denise M 1 in Chemistry

2006-11-15 08:34:58 · 5 answers · asked by Scottie M 2 in Astronomy & Space

Solid CO2 (dry ice) sublimes at 195 K and its heat of sublimation (DHsubl) = 25.2 kJ/mol. A block of dry ice with a mass of 40.6 g sublimes. What is the entropy change (DS) of the CO2? (Enter your answer in J/K).

2006-11-15 08:34:26 · 1 answers · asked by Anonymous in Chemistry

2006-11-15 08:31:22 · 3 answers · asked by John S 3 in Weather

What is this liquid that is emitted? and why does this happen?

2006-11-15 08:31:16 · 3 answers · asked by MrBombastic 2 in Engineering

Is an inequality the name of the symbol < or >, or is it the name of the complete figure i.e. 23<25?
Im teaching a place value lesson tomorrow so just want to be clear on this.

2006-11-15 08:30:00 · 9 answers · asked by apple84 3 in Mathematics

I know that it does! But noone can tell me WHY! Also, this is technically two questions- is e-coli capable of taking up a linear plasmid? As in one that has been restricted by an endonuclease and not reannealed. Please help!

2006-11-15 08:29:35 · 2 answers · asked by MiniMed 3 in Biology

have you lost a few hours opr gained any and not known how? any weird clouds of energy affecting car etc......
would love to know.

2006-11-15 08:28:35 · 14 answers · asked by jayne beal 3 in Physics

please dont say dog.hurry please!

2006-11-15 08:28:31 · 7 answers · asked by fabulous 2 in Zoology

Do lights of Red, orange and yellow have higher energy than green blue and violet?
how would you compare the energy of green light to orange light?
does the green light have less energy than orange light?

2006-11-15 08:28:00 · 2 answers · asked by Anonymous in Physics

2006-11-15 08:26:31 · 6 answers · asked by Jenny L 2 in Chemistry

2006-11-15 08:26:04 · 10 answers · asked by naturegirl 1 in Botany

2006-11-15 08:25:47 · 6 answers · asked by Anonymous in Chemistry

Help me to solve these three problems:

1.If a car goes from 0 to 80mph in six seconds with constant
acceleration, what is that acceleration?
2.An Acura NSX going at 70mph stops in 157 feet. Find the
acceleration, assuming it is constant.
3.A car going 80ft/sec (about 55 mph) brakes to stop in five
seconds. Assume the deceleration is constant. Find the total
distance traveled using antidifferentiation.

2006-11-15 08:25:03 · 2 answers · asked by ? 1 in Mathematics

If the frequency of a wave is 50 Hz, and the wavelength is 5 meters, what is its velocity?

2006-11-15 08:24:53 · 3 answers · asked by cetinnovations 1 in Chemistry

these beautiful islands are approximately an hour from Miami and near ( ish) to Jamaica

2006-11-15 08:21:13 · 1 answers · asked by Latin Techie 7 in Geography

I heard Andrew Wiles got close, did he solve it

2006-11-15 08:19:31 · 6 answers · asked by Glenn M 4 in Physics

It's for human phys, I have gone brain dead and im struggling to get quick answers. I know there are blood cells and sperm cells, can you think of anymore off the top of your head that I can list?

2006-11-15 08:19:07 · 11 answers · asked by LadyDeville 3 in Biology

2006-11-15 08:16:25 · 4 answers · asked by KK 2 in Geography

I think the test is called a Null Balace Test, although i don't know how far to put the spikes apart. Also if in tarmac/pavement i can't just drive in spikes.

2006-11-15 08:15:05 · 1 answers · asked by marslarky 2 in Engineering

2006-11-15 08:14:19 · 8 answers · asked by Anonymous in Medicine

2006-11-15 08:07:06 · 4 answers · asked by elaine g 2 in Astronomy & Space

Why don't we fall off the earth since it's round. Pictures of the earth show the lands to be verticle and yet we are surely flat. If the atmosphere was gone and we would to be a rock like the moon, and if possible, we can walk all around will we fall off? Wondering what you all have to say.

2006-11-15 08:06:35 · 4 answers · asked by Arkane Steelblade 4 in Astronomy & Space

Hey all. I live near the city of York in north- east England. It's popular with tourists and I'm forever hearing them call the UK 'England'. So i just wanna clear some things up:

Our country is called 'The United Kingdom of Great Britain and Northern Ireland' or the UK for shor,t although many of us also say 'Great Britain'.

Okay so what does that mean? Well it is a unification of two countries with Great Britain being a unification of three countries itself. These three countries are England, Scotland and Wales. In the early 1900's they joined with Northern Ireland to form the United Kingdom.

It's easy to understand so why do you Yanks get it wrong?

2006-11-15 08:05:44 · 37 answers · asked by MaccyD 1 in Geography

2006-11-15 08:04:45 · 2 answers · asked by sayer n 1 in Botany

2006-11-15 08:03:21 · 12 answers · asked by wisdom 3 in Weather