Science & Mathematics - 9 February 2007

(1) What is the effect of decreased HCl concentration on the equilibrium?

(2) Why did the color of the Na2CrO4 solution change when 6M NH4OH was added?


Thank you very much.

2007-02-09 12:32:33 · 2 answers · asked by -three31one- 1 in Chemistry

2007-02-09 12:28:50 · 1 answers · asked by jay 1 in Biology

I already know that hydrogen is converted to helium by fusion. That still doesn;t answer the question for me. What is fueling the sun? Why doesnt it run out. How can it stay burning without being consumed. How does it not run out of fuel. What keeps that fireball from exploding. How can it keep burining for thousands and millions of years. I have already read the usual explanation of fusion. I still want to know exactly how it can burn so long without running out of whatever is burning.

2007-02-09 12:27:30 · 7 answers · asked by m k 1 in Astronomy & Space

2007-02-09 12:25:57 · 4 answers · asked by goring 6 in Astronomy & Space

4x + 6y - 8z = 1
-6x - 9y + 12z = 0
x - 2y- 2z = 3

2007-02-09 12:23:15 · 2 answers · asked by melissa a 1 in Mathematics

be creative!! :)

2007-02-09 12:21:18 · 8 answers · asked by Frostie 1 in Engineering

2007-02-09 12:18:16 · 2 answers · asked by brooklyntrail 1 in Botany

2007-02-09 12:17:58 · 16 answers · asked by Vapin 1 in Astronomy & Space

2007-02-09 12:17:49 · 1 answers · asked by new to flooring 1 in Chemistry

Copper is a very close second.

2007-02-09 12:17:10 · 21 answers · asked by fresh2 4 in Chemistry

help me puh-lez!

2007-02-09 12:16:26 · 2 answers · asked by Anonymous in Earth Sciences & Geology

Please help, I have a science test in a few days and all the information i've been reading is incredibly complicated. I need it broken down

2007-02-09 12:12:11 · 4 answers · asked by GCTA 4 in Biology

please post the sources... specially if it's from the net...

2007-02-09 12:09:23 · 1 answers · asked by red_0rient 1 in Chemistry

2007-02-09 12:07:47 · 8 answers · asked by Anonymous in Zoology

Which of the following is the equation of a line with slope –1 passing through the point (5, –1)?

A y = -x + 4

B y = -x -1

C -y = 5x

D y = x -6

is A correct?

2007-02-09 12:07:45 · 6 answers · asked by .::Princess::. 1 in Mathematics

I was looking at the calculations on an old midterm and it goes from sqaureroot(1/4(e^2x+2+e^-2x)) to 1/2(e^x-e^-x) ... could someone please make this clearer for me ..

thanx

2007-02-09 12:06:06 · 4 answers · asked by moooona1987 2 in Mathematics

2007-02-09 11:59:34 · 5 answers · asked by kimzzz 1 in Biology

2007-02-09 11:58:41 · 6 answers · asked by kimzzz 1 in Biology

What is the normal dosage for amoxicillin 500mg? I was told to take two 500mg tablets twice a day. That seems like too much to me. I took the dosage and became sick. Vomiting, urine turned almost brown. I felt worse after the two dosages then before I went to the Dr.

Is this too much of the meds?

2007-02-09 11:58:23 · 11 answers · asked by tddfleming 3 in Medicine

2007-02-09 11:58:09 · 4 answers · asked by Anonymous in Physics

2007-02-09 11:58:05 · 3 answers · asked by jay 1 in Biology

2007-02-09 11:55:08 · 14 answers · asked by jay 1 in Biology

find the number of positive divisor and the number of even positive divisors of 6966

2007-02-09 11:53:19 · 3 answers · asked by Anonymous in Mathematics

before you try to be sarcastic remember that the sun IS A STAR just like the ones that you see in the dark night sky

2007-02-09 11:50:05 · 30 answers · asked by insenergy 5 in Astronomy & Space

2007-02-09 11:49:07 · 19 answers · asked by jay 1 in Biology

they give like 5 clues, and you have to figure out the 5 people's last name, first name, and where they live and stuff like that?
i LOVE them

2007-02-09 11:47:24 · 3 answers · asked by Anonymous in Mathematics

The apparent visual magnitude of a star is 7.3. This tekks us that the star is.
a) One of the brightest stars in the sky
b) bright enough that it would be visible even during the day
c) not visual with the unaided eye
d) very far from the Earth
e) Very close to Earth

2007-02-09 11:44:59 · 3 answers · asked by Helen 1 in Astronomy & Space

just a regular circle

2007-02-09 11:44:38 · 20 answers · asked by Anonymous in Mathematics

2007-02-09 11:43:23 · 4 answers · asked by kimzzz 1 in Biology

I remember reading about them, but I forget what one is. Isn't it like a pulsar...some kind of highly energetic star?

2007-02-09 11:43:15 · 2 answers · asked by Anonymous in Astronomy & Space