Science & Mathematics - 28 October 2007

A 30.6 g sample of gas occupies 22.4 L at STP. What is the molecular weight of this gas? Please include sig figs, and thank you!

2007-10-28 08:25:49 · 2 answers · asked by Anonymous in Chemistry

if i said "i am to books what ostriches are to sand" would you know what i meant?

2007-10-28 08:24:57 · 3 answers · asked by Anonymous in Zoology

Ok. It is fact an absolute fact that petroleum is a non renewable resource?

2007-10-28 08:24:05 · 4 answers · asked by Anonymous in Earth Sciences & Geology

2007-10-28 08:23:33 · 4 answers · asked by Anonymous in Geography

I've tried to get this answer, like, 20 times, and I do NOT get it. My dad's preoccupied w/ 2 or 3 football games and a race, so no help there, and so i really need your help.

In Exercises 64-66, you are running in a marathon. You either run 8 miles per hour or walk 4 miles per hour.

64. Write an equation to show the relationship between time run and time walked during the 26.2-mile course.

65. Graph the equation from Exercies 64. What are some possible running and walking times if you complete the 26.2-mile course?

66. If you walk for a total of 1 hour during the course, how long will you have spent running when you cross the finish line of the marathon?

Please help me. I'm ready to shred my math book and flush it in the toilet. I REEEEEEEEALLLY need help. Thanks.

2007-10-28 08:23:13 · 4 answers · asked by I LIKE CHOCOLATE MILK!!! 3 in Mathematics

one
two
three
four
five

2007-10-28 08:20:16 · 6 answers · asked by Anonymous in Biology

How many types of numbers' system rather?

2007-10-28 08:19:53 · 2 answers · asked by Rock 2 in Earth Sciences & Geology

2007-10-28 08:18:52 · 4 answers · asked by brilliantwash 4 in Engineering

have you heard of the bloody mary?
ive heard lots of weird things abt
her but i cantell you what happened to
me-
i had finished 8th grade and in
the summer i had the idea to try
it out. We (3 friends of mine &
me) went into a bathroom
with no windows closed the
door and chanted her name
12 times or so and held our hands
but nothing happened.
just when we got out of the bath
my mum came and told us that
mick-our cat- had been run over by a car.
im still feeling guilty-dont try to do that
bmarry thing- sth could happen.

2007-10-28 08:18:30 · 13 answers · asked by Anonymous in Paranormal Phenomena

What is the balanced net ionic equation for concentrated hydrochloric acid (HCl (is it aqueous????)) that is added to a solution of sodium carbonate (Na2CO3)?

2007-10-28 08:18:08 · 3 answers · asked by Anonymous in Chemistry

self explanitory please give your answers with working and try and keep it as simple as possible

2007-10-28 08:17:44 · 2 answers · asked by zush 1 in Mathematics

please help if u know biology!! give good details please

2007-10-28 08:17:28 · 2 answers · asked by Hannah L 1 in Chemistry

2007-10-28 08:17:07 · 7 answers · asked by Anonymous in Mathematics

i'm that tall but i don't know how tall i am in feet

2007-10-28 08:15:40 · 5 answers · asked by dromaister 2 in Mathematics

2007-10-28 08:14:07 · 1 answers · asked by Breezee 2 in Botany

factor f(x)= f(x)= 2x^2 +4x+7

i need to find the vertex, steps, x/y interceptd n the max/min value

2007-10-28 08:13:55 · 1 answers · asked by Anonymous in Mathematics

Ie. could a mag lev be made powerful enough to accelerate a satelite to escape velocity thus "throw" it into orbit without the use of thrusters.

2007-10-28 08:13:07 · 7 answers · asked by Steven P 1 in Astronomy & Space

2007-10-28 08:12:11 · 5 answers · asked by Breezee 2 in Botany

2007-10-28 08:10:55 · 7 answers · asked by Breezee 2 in Botany

2007-10-28 08:10:45 · 6 answers · asked by m s 1 in Astronomy & Space

a) a mating between an individual of unknown genotype and an individual homozygous recessive for the trait of interest
b) a mating between an individual of unknown genotype and an individual heterozygous for the trait of interest
c) a mating between an individual of unknown genotype and an individual homozygous dominant for the trait of interest
d) a mating between two individuals heterozygous for the trait of interest
e) None of the choices are correct.

2007-10-28 08:10:15 · 2 answers · asked by Anonymous in Botany

What is a full moon? What happens when there is one? How does it all occur?

2007-10-28 08:08:19 · 7 answers · asked by Morie Jay 2 in Astronomy & Space

It`s an antidepressant. Is One 20mg tablet the normal dose or is this a low dose. What`s the usual?

2007-10-28 08:05:36 · 5 answers · asked by Anonymous in Medicine

What different features of the natural environment need to be considered at the planning stage of a construction project and why?

2007-10-28 08:04:21 · 3 answers · asked by rose 3 in Earth Sciences & Geology

2007-10-28 08:04:09 · 5 answers · asked by Konamauri L 1 in Chemistry

I need this for a short thesis, but I have no time to find the appropriate literature. Thanks for the help. :)

2007-10-28 08:04:01 · 2 answers · asked by Aurora 4 in Physics

if you have links for more information,it will be better.thanks

2007-10-28 08:02:12 · 2 answers · asked by anis l 1 in Engineering

My daughter came home from school and said her teacher said there was a distant star way out in the universe getting ready to explode. "Super Nova" I know if this is true it did millions of years ago, we are just able to finally see it now. But was wondering if anyone else has heard about this?

2007-10-28 08:00:52 · 7 answers · asked by Lorah 2 in Astronomy & Space

2007-10-28 08:00:34 · 2 answers · asked by Racheal B 2 in Earth Sciences & Geology

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2007-10-28 07:59:52 · 3 answers · asked by Chuby 3 in Chemistry