Science & Mathematics - 2 February 2007

how do you balance the following:
___HNO3 + ___CaCO3 ----> ___CO2 + ___H2O +___ CaNO3

2007-02-02 06:45:57 · 3 answers · asked by alison m 1 in Chemistry

1 that I know of is on the sea wall on the Sandon Tidal Dock on the river mersey Liverpool UK

2007-02-02 06:41:59 · 4 answers · asked by Roy M 1 in Earth Sciences & Geology

2007-02-02 06:41:19 · 19 answers · asked by valkyrie_missile_uk 1 in Astronomy & Space

2007-02-02 06:41:09 · 4 answers · asked by Cheryl H 2 in Biology

If later in life she has a baby will it inherit the immunity for that virus? How about to a bacteria?
Would this also be considered evolution?

2007-02-02 06:39:17 · 2 answers · asked by Anonymous in Biology

A diagonal walk through a small rectangular garden 9 meters by 12 meters can be built at $10 per linear meter. How much will the walk cost.

How do I set this up and solve it?

2007-02-02 06:36:59 · 6 answers · asked by Anonymous in Mathematics

I need to learn this stuff. But I am so lost. If you can solve it, I'd appreciate it if you can provide the steps also.

2007-02-02 06:35:52 · 3 answers · asked by Anonymous in Mathematics

The charge on a capacitor increases by 15 µC when the voltage across it increases from 81 V to 121 V. What is the capacitance of the capacitor?
The answer shoul be Farad (F)

2007-02-02 06:33:43 · 3 answers · asked by ZG786 1 in Physics

I have to complete this problem for math and Im very confued by it, could someone please figure it out and explain it?

2007-02-02 06:32:54 · 7 answers · asked by Anonymous in Mathematics

i dont understand:
draw dot diagrams for one Li and one Cl atom.
write the symbols for these ions that show their overall charge.
write the formula for the compound formed.

if you know the answer, please explain it so, i can do the other problems as well

2007-02-02 06:32:06 · 2 answers · asked by globalpinaygirl 2 in Physics

Was it the courage and determination of the Wright Brothers in collaboration with Alcock and Brown that led to the dawn of powered flight, and our window to the Cosmos!? Well, more or less, anyway!

2007-02-02 06:28:56 · 2 answers · asked by Anonymous in Astronomy & Space

Question about a certain Fruit

2007-02-02 06:28:31 · 13 answers · asked by ASHERS 1 in Other - Science

I am given side AB = 20 and side BC = 16
Side AB is the hypotenuse
I need to find side AC which forms the right angle

The questions are What is the length of side AC
then find the perimeter and the area of the right triangle.

Help please

2007-02-02 06:27:53 · 7 answers · asked by Anonymous in Mathematics

2007-02-02 06:27:10 · 4 answers · asked by Esmaeil H 2 in Mathematics

1) when solving equations with absoulte value, why do we need to consider two equations?
2) A compound inequality uses one of the words and or. How can we determine whether to use intersections or union when graphing the solution set?

2007-02-02 06:25:12 · 2 answers · asked by sw_joey 2 in Mathematics

i did an experiment where my partners and i tried growing mold on apple juice, koolaid, and diet pepsi. it worked and the apple juice had the most mold. i was just wondering what mold grows on liquids. i tried looking online but because im at school, they dont let us go to a lot of them. i just need general information on mold that grows on liquids, how it forms, and what kind of mold it is....if you could help i would love you forever. lol. thanks!

2007-02-02 06:24:24 · 1 answers · asked by crazyskeeterboo 2 in Botany

2007-02-02 06:24:02 · 5 answers · asked by Anonymous in Astronomy & Space

Okay....I'm tired of all these silly questions in this forum...time for some serious sh*t!!! I'm looking forward to some good old fashioned humor here.....*wink*

2007-02-02 06:21:45 · 4 answers · asked by Anonymous in Other - Science

2007-02-02 06:20:45 · 1 answers · asked by Anonymous in Botany

2007-02-02 06:19:13 · 8 answers · asked by woodchip1960 2 in Earth Sciences & Geology

I was reading something a college professor (who is also a paleontologist) posted on his website. He said, "Evolution is an observable and testable fact whose predictions have been repeatedly corroborated." If you will, please help me understand this better. According to my understanding of evolution, it takes many, many years for changes to occur, so how can anything be observed?

Please only answer this question if you can keep your emotions under control. I say this because many people seem to get very upset or otherwise excited when they talk about this subject. Notice I have placed this question in the Science category and not the Religion and Spirituality one. I am purposefully trying to avoid a debate. If you are a creationist, please do not respond to my question to tell me what you believe in. I am fairly well versed in creationist viewpoints, so there isn't any need for your responses, thanks.

2007-02-02 06:18:59 · 10 answers · asked by Unorthodox 3 in Other - Science

I have been looking at maps but can't see the height. Any ideas?

2007-02-02 06:18:57 · 2 answers · asked by paranoidsteve 1 in Geography

Isn't on supposed to be on the other side of the world?

2007-02-02 06:18:29 · 7 answers · asked by Ashleigh 1 in Astronomy & Space

a)It is the best angular resolution the telescope could achieve with perfect optical quality and in the absence of atmospheric distortion.
b)It is the maximum size to which any telescope can be built.
c)It describes the maximum exposure time for images captured with the telescope.
d)It describes the farthest distance to which the telescope can see.

2007-02-02 06:18:12 · 2 answers · asked by Goodtimes 2 in Astronomy & Space

Its a mathematical & logical question.

2007-02-02 06:16:33 · 7 answers · asked by sharbadeb 2 in Mathematics

2007-02-02 06:16:16 · 13 answers · asked by fasica 1 in Astronomy & Space

2007-02-02 06:15:17 · 13 answers · asked by Anonymous in Medicine

When would a small car have the same momentum as a large truck?
(a) when the velocity of the truck is much greater than the velocity of the car?
(b) when the velocity of the car and truck are wequal
(c) never
(d) when the velocity of the car is much greater than the velocity of the truck
(e) none of the above

2007-02-02 06:14:50 · 4 answers · asked by Hey ;) 3 in Physics

If black color doesnt reflect any light and white is combination of all colors (someone even told me these colors dont theoretically exist) than what is grey color and how it is possible we can see it? If it reflected only half of the spectrum than white+black should create color that is in the middle of a spectrum... can you explain this?

2007-02-02 06:14:14 · 7 answers · asked by eldridan 3 in Physics

If the salt(NaCl) is dissolved in water do you expect to find ionic bonds in it.....

2007-02-02 06:13:44 · 5 answers · asked by Anonymous in Mathematics