Science & Mathematics - 15 December 2007

1. Circle
2. Ellipse
3. Hyperbola
4. None of these

2007-12-15 10:07:44 · 2 answers · asked by chriskel8706 1 in Mathematics

2What is the molarity of 5.00g of NaOH mixed with 550.0 mL of solution?

3How many Moles of NaCl are contained in 10L of a 2M solution?

4What mass of NaCl would be contained in the previous problem?

5Howmany moles of HCl do you have if you have 76 grams?

6Howmany liters of space does one mole of gas occupy at STP?

7How many grams of NaOH are needed to make 500mL of 2.5 M solution?

8How many mL of 6 M HCl is needed to contain 2 moles of HCl

9What are the formula's for the diatomic molecules?

10How many atoms are in one mole of Chlorine at STP?

2007-12-15 10:06:59 · 2 answers · asked by Aaron C 3 in Chemistry

1. Circle
2. Ellipse
3. Hyperbola
4. None of these

2007-12-15 10:06:21 · 2 answers · asked by Anonymous in Mathematics

Its for a project. and i need videos of the sun. ty.

2007-12-15 10:06:18 · 11 answers · asked by Anonymous in Astronomy & Space

Determine, WITHOUT GRAPHING, if the given quadratic functions have a maximum or minimum value and then find the value.

(1) f(x) = -2x^2 + 12x

(2) f(x) = 4x^2 - 8x + 3

2007-12-15 10:05:20 · 7 answers · asked by journey 1 in Mathematics

x^3 + 5x^2 + 2x-8

Thanks!

2007-12-15 10:02:25 · 2 answers · asked by Eyepatch 2 in Mathematics

My math: what are the factors of 568?

2007-12-15 10:01:20 · 2 answers · asked by Cowboys And Longhorns 5 in Mathematics

If f(x)= -x^(3)+6x^(2)-9x-2, how do you find the relative minim value?

but really...i'm stuck here..how do you solve this equal to 0?

-3x^(2)+12x-9=0?

2007-12-15 09:59:17 · 2 answers · asked by remote control 1 in Mathematics

What's 3 -i/1 + 2i?

2007-12-15 09:57:48 · 4 answers · asked by Anonymous in Mathematics

Is the concentration of DNA constant for different body cells of the same species?

2007-12-15 09:55:46 · 3 answers · asked by HBK 2 in Biology

i just want to know

2007-12-15 09:55:29 · 5 answers · asked by Jordan W 1 in Earth Sciences & Geology

2 -3 -5
1 2 2
5 3 -1

2007-12-15 09:52:24 · 3 answers · asked by jared r 1 in Mathematics

A plant sealed in an air tight jar will die in about a week. An animal placed in a similar jar will die in a matter of hours.

What is the cause of the plant’s death? The animal’s death? Would the survival times for these organisms change if they were placed in the same sealed jar?
What caused the animal and plants deat?
What experimental conditions could exist?

2007-12-15 09:51:21 · 1 answers · asked by Anonymous in Biology

for any two numbers a and b proove abs(ab) = abs(a)*abs(b)

2007-12-15 09:50:34 · 5 answers · asked by Anonymous in Mathematics

2007-12-15 09:49:19 · 12 answers · asked by Burt Navarro 1 in Medicine

using the additional formula

2007-12-15 09:48:48 · 8 answers · asked by Anonymous in Mathematics

OK, Facts from Wikipedia:
Located at a distance of about 6,300 light years (2 kpc) from Earth, the nebula has a diameter of 11 ly (3.4 pc) and is expanding at a rate of about 1,500 kilometers per second.

Considering that 1500 kilometers per second is 3300 miles per second in a day that would mean that the nebula expanding 285,120,000 miles a day.

In a month that would be 59,875,200,000 billion miles.

Why doesn't this nebula look massive in the sky? How can it be so consistent with it's appearance?

2007-12-15 09:46:44 · 6 answers · asked by Jansen J 4 in Astronomy & Space

1) crystal face
2) crystal form
3) the differences between 1) & 2)
4) twin and twinning. Please include some examples and how they relate to 1) and 2)

2007-12-15 09:40:19 · 2 answers · asked by Gideon 1 in Earth Sciences & Geology

Which of the following discoveries provides the best evidence for the belief that DNA carries genetic information?
a) the DNA content of cells from the different tissues of an organism is the same
b) the adenine to thymine and guanine to cytosine ratios in DNA are equal to 1
c)heritable transformations of bacterial cells is brought about by DNA
d) DNA is present in the chromosomes
e) DNA is present in all cells that divide

2007-12-15 09:38:01 · 3 answers · asked by marlin661 1 in Biology

I understand the process when there are percentages given, but to just have two elements alone, how do you do it? Mg and N?

2007-12-15 09:36:08 · 4 answers · asked by Anonymous in Chemistry

Can anyone tell me what sort of polyamide is used in a household carpet and what else makes up a carpet besides the polyamide.

2007-12-15 09:35:31 · 3 answers · asked by Anonymous in Chemistry

during august?

2007-12-15 09:34:55 · 5 answers · asked by Anonymous in Weather

nothing should i believe them or not please help me please...

2007-12-15 09:34:03 · 11 answers · asked by Anonymous in Medicine

what are polar, nonpolar, ionic bond, polarity, and intermolecular force?

dont give me dictionary definitions
pls give me in yur words in easy words since im not a native speaker. thank you

2007-12-15 09:32:52 · 3 answers · asked by Hoq Q 1 in Chemistry

2007-12-15 09:30:42 · 5 answers · asked by Anonymous in Chemistry

the last time people walked on the moon was in 1972.

2007-12-15 09:28:13 · 8 answers · asked by Anonymous in Astronomy & Space

2007-12-15 09:27:46 · 3 answers · asked by Andy 4 in Geography

The purpose of this experiment was to determine the effect of liquid densities on the height of the propulsion of a water rocket

I became interested in this idea when I was watching the launch of NASA’s rocket ship, and wondered if the density of the air and objects on-board affected the velocity of the takeoff.

The information gained from this experiment could help aerodynamic engineers because ________


I NEED HELP

PLEASEE :(

Does my purpose make sense? ^^

2007-12-15 09:27:28 · 3 answers · asked by Anonymous in Engineering

Does water have a lower density compared to milk?
Does that mean..that if I put water in Rocket A, and milk in Rocket B, Rocket A will go higher because water has a lower density than milk...

does that make sense^^?

2007-12-15 09:25:16 · 6 answers · asked by Anonymous in Chemistry

Does that mean..that if I put water in Rocket A, and milk in Rocket B, Rocket A will go higher because water has a lower density than milk...

does that make sense^^?

2007-12-15 09:24:29 · 8 answers · asked by Anonymous in Physics