Science & Mathematics - 18 January 2007

How do you find the mass of an object when you only have it's density and length? I know that density is mass/volume. But' I can't figure out a way to get the volume with only the length. Please help! The question is a piece of rope has a density of 6.1g/cm. What is the mass of 10.7 cm of the wire? Answer needs to be in grams.

2007-01-18 14:20:43 · 3 answers · asked by candy525 1 in Physics

the calculaters for patty's store are packaged in 15 to a box, and batteries are 144 to a box. Each calculater requires 4 batteries. What is the least number of boxes of calculaters she will need if she wants no calculaters or batteries left over?
Possibilities(choices)
A. 4 boxes
B. 6 boxes
C.12 boxes
D. 180 boxes

2007-01-18 14:20:06 · 2 answers · asked by ~VICKY~ online talk ta me 1 in Mathematics

describe the conditions necessary for 6.02 x 10 to the 23 power gas particles to occupy a volume of 22.4 dm3.

2007-01-18 14:19:02 · 3 answers · asked by Anonymous in Chemistry

1) How do you find the polarity of molecule w/ 3 different elements? ex- CCl2S

2)How is SiCl4 nonpolar? when computing the electronegativity difference, it should be, but apparently it's not...so idk why??

2007-01-18 14:18:52 · 3 answers · asked by bree 3 in Chemistry

NONE

2007-01-18 14:18:11 · 27 answers · asked by Anonymous in Weather

why is avogadro's number important?

2007-01-18 14:16:50 · 2 answers · asked by Anonymous in Chemistry

2007-01-18 14:16:42 · 9 answers · asked by saul_dlrs 1 in Chemistry

Is it just because the air is a lot dryer? And if so, what causes the air to be so much dryer?

2007-01-18 14:16:36 · 2 answers · asked by ilovesubasketball 4 in Weather

This is crazy, I am trying to learn whether Anode is the positive side of the battery or the negative Side. So far, I got 15 people telling me its positive and 15 telling me its negative. So, please could anyone here clear this up? Anode is positive or Negative, and what about Cathode?

2007-01-18 14:16:12 · 3 answers · asked by Blue Jay Z 4 in Physics

how is the atomic mass of a monatomic element related to its molar mass?

2007-01-18 14:15:12 · 2 answers · asked by Anonymous in Chemistry

2007-01-18 14:15:11 · 2 answers · asked by GwenFals 1 in Biology

2007-01-18 14:14:40 · 5 answers · asked by Orlando D 1 in Astronomy & Space

What happens to the wax that is burned when a candle is lit. The wax gets incorporated into the air..?? Does anyone know the chemistry to this...and also, is it a health hazard to breathe this in?

Thanks!

2007-01-18 14:13:21 · 6 answers · asked by ๑The Goddess๑ 3 in Other - Science

p= momentum (Js/m)
h is Planck's constant =6.62*10^-34 (Js)
c is speed of light =3*10^8 m/s

2007-01-18 14:11:53 · 2 answers · asked by Ha P 2 in Physics

2007-01-18 14:11:03 · 4 answers · asked by saving_for_college 2 in Biology

2007-01-18 14:09:27 · 5 answers · asked by ANDREW H 4 in Astronomy & Space

why is zero to the power of zero not one?

2007-01-18 14:06:21 · 11 answers · asked by sexypimpett 1 in Mathematics

I was home sick at the end of last week from school and I was watching this show on the Discovery Channel about this guy who had surgeons put a bionic ear in his arm. I know it sounds weird but I'm not making it up. He was one of those guys who put steel hooks through their backs and then are suspended. They also said that he was Australian. If you know his name or know a website where I can find out more about his surgery post here.

2007-01-18 14:05:42 · 3 answers · asked by nikkigurl232004 2 in Medicine

a molecular formula is the simplest wholenumber ratio of atoms in a compound.

2007-01-18 14:03:34 · 10 answers · asked by Anonymous in Chemistry

2007-01-18 14:03:13 · 9 answers · asked by itaylior 3 in Mathematics

2007-01-18 14:01:02 · 1 answers · asked by Jim E 1 in Astronomy & Space

3x/6 + 4 = 6x/6 - 6

I used a equation calculator to solve this but it didn't show the process

the answer it gave was x=20

This is the last problem of 50 and the only one I'm not sure of
If 20 is the answer how do I get it?

Again thanks for the help with this one and the two story problems from earlier

2007-01-18 14:00:15 · 6 answers · asked by bkm_71csi 3 in Mathematics

A)24g Mg
B)80.g Ar
C)4.0g He
D)10.g Ne

i put d but that was wrong....??? help?!?!?

2007-01-18 13:58:56 · 2 answers · asked by um yea hi 4 in Chemistry

one mole of any gas occupies a volume of 22.4 L at STP.

2007-01-18 13:57:49 · 19 answers · asked by Anonymous in Chemistry

The oscillation period of a pendulum varies as the square root of its length and inversely as the square root of the acceleration due to gravity. Given that the moon has 1/6 the earth's gravity, how much shorter should a pendulum on the moon be in order to have a period that is twice as long as a pendulums period on earth?

2007-01-18 13:57:44 · 2 answers · asked by Becca 1 in Physics

I have a calculater so don't lie.

2007-01-18 13:56:40 · 16 answers · asked by Anonymous in Mathematics

Plz help me find the G.C.F. and L.C.M. of:

8 and 12,

5 and 7,

9 and 15,

30 and 40,

32 and 48,

52 and 78,

27 and 36,

16 and 13,

4, 6 and 18,

12, 18 and 24,

30, 48, and 120,

11, 44 and 10,

6, 15, 30, and 42.

If you don't want to solve them, please give me a website where I can type in the question and it gives me the answer.
Thank-you so much! (Will pick best answer) =]

2007-01-18 13:55:48 · 4 answers · asked by Anonymous in Mathematics

I have a trig problem that is going to go into a burning man project. It's a very important calculation so I need a second person to confirm my answer.

Have a 30 60 90 triangle. 2.6m side is adjacent to 30 deg and 90 deg angle. Need to find hyp. Thanks!

2007-01-18 13:55:41 · 3 answers · asked by Vic 1 in Mathematics

Find all possible rational zeros

2007-01-18 13:55:07 · 2 answers · asked by Princess685 1 in Mathematics

A) NH[subscript 4, superscript +]
B)N[subscript 2]
C)NaHCO[subscript 3]
D)Na

im kinda confused as to why i got this wrong on my chem test. please also give me a reason why the right answer is right

also, i put A and it was wrong

2007-01-18 13:54:56 · 2 answers · asked by um yea hi 4 in Chemistry