Science & Mathematics - 22 December 2007

2007-12-22 09:16:55 · 7 answers · asked by Anonymous in Astronomy & Space

2007-12-22 09:15:24 · 3 answers · asked by HM 3 in Medicine

can they sting a person like me,can a venomous animal kill me

2007-12-22 09:06:47 · 4 answers · asked by Anonymous in Zoology

2007-12-22 09:06:02 · 5 answers · asked by Anonymous in Zoology

then why do they label PRE-Ad years as B.C.????
what do u think abou tthat scientists?

2007-12-22 09:01:54 · 10 answers · asked by Lott 1 in Other - Science

our car is strucked in snow

2007-12-22 08:59:28 · 16 answers · asked by M & A 2 in Weather

Find (A) the GCF and (B) the LCM of the following monomials.
1) 28, 35, 42
2) 9x^2y and 36xy^3

Solve the following equation.
x(x-2)(x+3)=0

MERCI BEAUCOUP!

2007-12-22 08:55:29 · 4 answers · asked by acetone33432 1 in Mathematics

What is the dkg of this bag.

1 pound of this item = $35.00
You bought $7.18 of this item

What is the weight in dkg?

2007-12-22 08:54:06 · 4 answers · asked by gecko11o6 1 in Mathematics

P4O10 + 6H2O → 4H3PO4
a) 1
b) 3
c) 6
d) 9

2007-12-22 08:40:30 · 4 answers · asked by Anonymous in Chemistry

Solve the equation: 3n = 42
Show all your work

2007-12-22 08:39:09 · 3 answers · asked by MiSs MoM 2 in Mathematics

For my project (im in 9th grade) I am seeing how different insolators affect the temperature of a solar oven. Only problem is, its winter (i live in NY) and we dont get many sunny days. I've read that you can use solar ovens in winter but im afraid that we dont get enough sun. I was thinking that i could use a infrared or UV bulb to act like the sun and do it indoors just to test my project even though this would not make sense to do this if you were using it to cook food..... the only problem is i dont think that infrared light can go through the glass of my solar oven and im not sure about UV. So please i need some project suggestions and if this will work, or if i should hope for sunny days. If you have any advice on construction that would be so great... im really afraid my project wont work ****10 points best answer****

thanks!!

2007-12-22 08:36:23 · 3 answers · asked by Anonymous in Weather

2007-12-22 08:32:38 · 5 answers · asked by David M 1 in Engineering

2007-12-22 08:32:06 · 6 answers · asked by mom 1 in Mathematics

2007-12-22 08:28:22 · 2 answers · asked by ERO F 1 in Physics

2007-12-22 08:27:40 · 6 answers · asked by jazzman 1 in Zoology

2007-12-22 08:22:04 · 13 answers · asked by Claire 2 in Astronomy & Space

3 MEN GO INTO A MOTEL. THE MAN BEHIND THE DESK SAID THE ROOM IS $30 SO EACH
MAN PAID $10 AND WENT TO THE ROOM.

A WHILE LATER THE MAN BEHIND THE DESK REALIZED THE ROOM WAS ONLY $25,
SO HE SENT THE BELLBOY TO THE 3 GUYS' ROOM WITH $5.

ON THE WAY THE BELLBOY COULDN'T FIGURE OUT HOW TO SPLIT $5 EVENLY BETWEEN 3 MEN, SO HE GAVE EACH MAN A $1 AND KEPT THE OTHER $2 FOR HIMSELF.

THIS MEANT THAT THE 3 MEN EACH PAID $9 FOR THE ROOM, WHICH IS A TOTAL OF
$27, ADD THE $2 THAT THE BELLBOY KEPT = $29.

WHERE IS THE OTHER DOLLAR?

2007-12-22 08:13:08 · 11 answers · asked by Justin N 2 in Mathematics

2007-12-22 08:09:25 · 8 answers · asked by TOOCOOL187 1 in Physics

Solid Zinc reacts with aqueous HCL to produce Zinc chloride and Hydrogen gas. In a rcent experiment, 20 grams of Zn reacted to produce H2 at 30 degreed C and at a pressure of 700 mm Hg.

1. Determine the volume of H2 collected at STP.
2. Calculate the pressure of the dry hydrogen gas.
3. calculate the volume of H2 collected at the conditions it was collected.
4. Determine the mass of hydrogen gas collected.
5. calculate the experimental density of H2 from the lab data.
6. calculate the accepted value for density of hydrogen gas
7. calculate the percent error.

PLEASE SHOW WORK!!!! thank you and for answers... best answer + 5 stars!!!! thanks again!

2007-12-22 08:09:15 · 2 answers · asked by papi 5 in Chemistry

2007-12-22 08:07:38 · 6 answers · asked by zaa 1 in Astronomy & Space

how current varying from 4 to 20 mA although there is a constant voltage 24Vdc on the 2 wires...

2007-12-22 08:06:26 · 3 answers · asked by MaxTempo 1 in Engineering

2007-12-22 08:03:02 · 6 answers · asked by rogue 5 in Biology

2007-12-22 08:02:46 · 15 answers · asked by zaa 1 in Botany

Write the equations of all tangents to the curve y= -2x^2+12x-12 that pass thru (3,8)

2007-12-22 08:02:15 · 6 answers · asked by DJS 2 in Mathematics

I have few questions on these...are they sublimation, condensation, solation, fusion, or freezing? (answer choices can be used more than once) 1. if a temp increases from 10 C to 60 C at a constant pressure of .4 atm...
2. if the temp decreases from 110 to 40 C at a constant pressure of 1.1 atm...
3.if the pressure increases from .5 to 1.5 atm at a constant temp. of 50 C.

I also don't know if my answer is correct for this:
1. samples of F2 gas and Xe gas are mixed in a fixed vol. container. the initial pressure of the F2 gas is 8 atm and the Xe is 1.7 atm... when all the Xe gas reacted forming a solid compound, the pressure of the unreacted F2 was 4.6 atm. the temp remained constant. what is the formula?

my answer I got was XeF4....is that correct?

2007-12-22 07:59:09 · 1 answers · asked by Anonymous in Chemistry

7√x + 13 = 6

a. √7
b. 49
c. 1
d. no solution

2007-12-22 07:57:12 · 8 answers · asked by mommawe'regoingtohell 1 in Mathematics

Serious answers please.

Medically.

2007-12-22 07:49:11 · 6 answers · asked by Anonymous in Medicine

2007-12-22 07:42:31 · 8 answers · asked by coasterrider1 5 in Astronomy & Space

2007-12-22 07:34:06 · 16 answers · asked by Anonymous in Physics

f '(x)= ((4x)/(x^2+3))-1

2007-12-22 07:34:00 · 2 answers · asked by hello. 1 in Mathematics