Science & Mathematics - 28 July 2007

2007-07-28 11:20:17 · 14 answers · asked by eeyoree rocks2003 7 in Astronomy & Space

According to the Bronsted-Lowry definition,
an acid is a proton acceptor.
an acid acts as the solvent.
a base is a proton donor.
a base is a proton acceptor.
a base produces H+ ions in aqueous solutions.

2007-07-28 11:19:03 · 5 answers · asked by hanaayr 1 in Chemistry

-2/3x + 4

2007-07-28 11:18:30 · 2 answers · asked by Anonymous in Mathematics

It seems to me that unless an answer is ALREADY known (by whomever has the answer the way THEY DID IT) the order of operations are arbitrary. There certainly are times when the rules make sense, and other times they seem completely whatever some jackass 3000 years ago made up. Switch the order of operations around in an expression (not equation) and you can get all sorts of answers or simplifications. Math is only a perfect language insofar as long as everyone follows the rules! Or am I crazy??

2007-07-28 11:17:55 · 6 answers · asked by hammond_eggor 2 in Mathematics

-2/3x +4

2007-07-28 11:17:43 · 3 answers · asked by Anonymous in Mathematics

Also regarding Apopyllite can pure form of
Fluorapolphyllite and Hydroxyapophyllite be found in nature?
I realise that Olivine (Forsterite/Fayalite) and Apopyllite (Fluorapolphyllite/ Hydroxyapophyllite) are solid solutions but in theory at least can all four exist as seperate minerals?
Any help would be appreciated.

2007-07-28 11:16:56 · 2 answers · asked by Gideon 1 in Chemistry

x2 -6x -40

2007-07-28 11:16:46 · 2 answers · asked by Anonymous in Mathematics

Find two factors of 36, 54, and 180

Business and finance. Al purchased a new refrigerator that cost $736.12 with
interest included. He paid $100 as a down payment and agreed to pay the remainder
in 18 monthly payments. What amount will he be paying per month?


Evaluate each of the following expressions

[25 / (2 to the third power -3)] times 2

[(2+3)to second power-4 x5] +7




Insert grouping symbols in the proper place so that the given value of the expression is
obtained.

5-3x2+8x5-2; 28

l4l+l-3l

2007-07-28 11:15:34 · 1 answers · asked by bigchadmark 2 in Mathematics

2007-07-28 11:05:47 · 3 answers · asked by Anonymous in Mathematics

2007-07-28 11:03:11 · 10 answers · asked by Anonymous in Physics

2007-07-28 11:00:21 · 8 answers · asked by Anonymous in Physics

2007-07-28 10:56:17 · 6 answers · asked by Morgan 1 in Mathematics

i.e from a hurricane in the gulf of mexico to arizona

2007-07-28 10:54:25 · 4 answers · asked by TYROTH 1 in Weather

2007-07-28 10:53:32 · 13 answers · asked by lala 16 5 in Weather

ò ò cos q dA
R

where R is the third quadrant area inside the circle given by r = 4 and outside the circle given by r = 2 .


a. -12
b. -6
c. -3
d. -1
e. 0
f. 1
g. 2
h. 3
i. 6
j. 12

or is it none of these?

2007-07-28 10:51:32 · 1 answers · asked by Olivia 4 in Mathematics

2007-07-28 10:49:40 · 7 answers · asked by Laurie 5 in Engineering

2 (4 - x^2)^1/2
ò ò _ _ (x^2 + y^2 )^11/4 dy dx
0 0

I think you need to try changing to polar coordinates.


a. p(4/5)(2^1/2)
b. p(8/7)(2^1/2)
c. p(16/9)(2^1/2)
d. p(32/11)(2^1/2)
e. p(64/13)(2^1/2)
f. p(128/15)(2^1/2)

or is it none of these?

2007-07-28 10:48:57 · 2 answers · asked by Olivia 4 in Mathematics

i need to no

2007-07-28 10:42:00 · 19 answers · asked by isis[RAWR] 1 in Geography

How do you calculate the molarities of the original HCl solutions,

18.00 mL of 0.555 M NaOH solution is titrated with 24.65 mL of HCl solution

-thnx

2007-07-28 10:38:05 · 2 answers · asked by LYF 1 in Chemistry

2007-07-28 10:36:29 · 11 answers · asked by Super Rad 1 in Other - Science

possible solutions...

a. 3
b. 4
c. 6
d. 8
e. 12
f. 18
or none of these

2007-07-28 10:29:05 · 2 answers · asked by chris 2 in Mathematics

2007-07-28 10:20:13 · 12 answers · asked by ROBERTO D 1 in Astronomy & Space

2007-07-28 10:05:54 · 6 answers · asked by lord_andys_new_id 1 in Mathematics

2007-07-28 10:04:27 · 6 answers · asked by Bronco 1 in Zoology

2007-07-28 09:50:50 · 6 answers · asked by willow 6 in Zoology

2007-07-28 09:41:40 · 4 answers · asked by Anonymous in Zoology

How many colors does each raindrop contribute to a rainbow?

2007-07-28 09:33:52 · 3 answers · asked by Anonymous in Weather

I have heard a rumor that in countries where it doesn't always rain, that there is this thing in the sky, called 'the sun', that shines down on you and makes it 'warm'.

Is this just a myth, or does this thing exist? If it does, do you think we will ever see it here in the uk?

If anyone who has seen this is reading it, what more can you tell me about it?

2007-07-28 09:28:51 · 22 answers · asked by footynutguy 4 in Weather

2007-07-28 09:25:05 · 18 answers · asked by txflower62 2 in Mathematics

I imagine we'd have less wrinkles as we age.

2007-07-28 09:24:01 · 5 answers · asked by Anonymous in Physics