Science & Mathematics - 17 December 2006

stomach acid is HCl. 5. A sample of gastric juice having a volume of 5.00 mL required 11.00 mL of 0.0100 M KOH solution for neutralization in a titration. what was the molar concentration of HCl in this fluid? If we assume a density of 1.00 g mL^-1 for the fluid, what was the percentage by weight of HCl?

I get how to find the molar concentration of HCl but i didn't get the 2nd part of the question about the percentage by weight. i am confused by the 1.00 g mL^-1. does anyone know how to solve it? the answer is supposed to be 0.0803%

2006-12-17 05:46:14 · 3 answers · asked by E.T.01 5 in Chemistry

also if a number is increased 100 times, what happens to the square root.

2006-12-17 05:43:32 · 7 answers · asked by Anonymous in Mathematics

2006-12-17 05:41:50 · 8 answers · asked by Anonymous in Weather

The Andes and Rockies are lying on a great circle. The moon pulls the oceans up 5 to 15 ft. as it passes around. The only logical explanation for the crust upheaval of the mt chain is a passby of a body bigger that the moon and smaller than the earth.

2006-12-17 05:39:50 · 4 answers · asked by Anonymous in Earth Sciences & Geology

2006-12-17 05:36:49 · 8 answers · asked by Anonymous in Physics

2006-12-17 05:36:30 · 1 answers · asked by kiran 1 in Chemistry

2006-12-17 05:34:36 · 14 answers · asked by Anonymous in Chemistry

I based that assumption when compare to other countries.
Any intelligent comment on this issue would be nice.

2006-12-17 05:31:17 · 11 answers · asked by Anonymous in Mathematics

2006-12-17 05:28:09 · 2 answers · asked by marievergamini 1 in Biology

Since this is the day that the northern hemisphere gets the least amount of sunlight why are the weeks surrounding the Winter Solstice the coldest? January and February are colder than December. Why?

2006-12-17 05:22:58 · 7 answers · asked by Jace 4 in Weather

I thought that the negative between the parentheses changed the symbol that’s being subtracted to a positive. Wouldn’t this then be 10M + 6M? Then -n + -2n? The answer is 4m-3n can someone please spell it out for me. =)

2006-12-17 05:22:15 · 8 answers · asked by grem 3 in Mathematics

2006-12-17 05:19:58 · 16 answers · asked by area52 6 in Zoology

2006-12-17 05:19:19 · 2 answers · asked by janu 1 in Chemistry

I'm probably going to need an explanation since I'll have to do other problems like this in the near future. Thanks in advance.

2006-12-17 05:19:13 · 7 answers · asked by Anonymous in Mathematics

2006-12-17 05:18:14 · 2 answers · asked by Anonymous in Engineering

in archetecture-beams above broad openings such as shop windows - give name

2006-12-17 05:15:41 · 1 answers · asked by billh 1 in Engineering

Is it true?

2006-12-17 05:15:04 · 9 answers · asked by neecee85 1 in Zoology

2006-12-17 05:14:16 · 13 answers · asked by Anonymous in Earth Sciences & Geology

A parabola in the form y=ax^2+bx+c passes through the point (2,5). The line y=-8x+29 is also tangent to the parabola at the point (4,-3). Find the equation of the parabola algebraicly.

I have tried but can't do it please help.

2006-12-17 05:11:57 · 2 answers · asked by Memory Controller 1 in Mathematics

If we could inject ourselves with single-cell sized robots that could be programmed to do anything, wouldn't that make all medication obsolete? All the theory, and most of the technology is there. It's just a matter of putting in the cash. By the way, this would cure AIDS also. Your thoughts?

2006-12-17 05:10:31 · 2 answers · asked by martin h 6 in Engineering

2006-12-17 05:10:05 · 10 answers · asked by love and peace 1 in Astronomy & Space

I read this on the internet.

The Earth is closest to the Sun (this is called perihelion) around January 2 each year (91.4 million miles = 147.1 million km); it is farthest away from the Sun (this is called aphelion) around July 2 each year (94.8 million miles = 152.6 million km).

so how come it's freezing cold on jan and superhot on july?

2006-12-17 05:07:12 · 10 answers · asked by chapped lips 5 in Astronomy & Space

When the nanotech age is in full swing about 60 to 100 years from now we will have billions of nanobots inside us (or our great grandkids I guess) which will keep you from aging, and basically do anything you can imagine. Kind of like the liquid thing in Terminator 2. So the question is statistics: how many people die from accidents. Take the average life expentancy today, and divide the percentage of people who die from accidents and homicide. Let's say it's 15%. So the average life expectancy would be about 800 years. Does that math sound about right?

2006-12-17 05:07:08 · 7 answers · asked by martin h 6 in Engineering

I was born in 1993 but...why when i was three years old i starting remembering everything?!?! and still do...like scents...objects my old house every detail...is this weird or ...

2006-12-17 05:07:07 · 20 answers · asked by cassandra b 1 in Other - Alternative

I'm not quite sure, I found some acetic acid that was 6% but this seems like a bit much. Perhaps you could tell me the percentage of AA that should make up the solution, and give me the chemical composition.

2006-12-17 05:06:17 · 1 answers · asked by Anonymous in Chemistry

Anyone with a TI-89 check this derivative for me?
i tried to download a program to find derivatives on a TI-83 plus but my calc doesnt connect.
someone iwth a TI-89 check this for me?
f(x)= ((x-sqrt(x))/(x+sqrt(x)))^2

evaluate at x=1
is it 0 at f '(1)?

2006-12-17 05:06:03 · 3 answers · asked by Anonymous in Mathematics

Find the shaded area?
I have a rectangle 5x+2 by 3x-1 with another inside it 4from top 2 from left 2 from right 1 from top
how do i find the shded area outside the inner box

2006-12-17 05:04:29 · 5 answers · asked by spacehawkuk 1 in Mathematics

You can tell me im right and you can tell me im wrong but,,,does anyone beleive "mermaids" exist i do...just need to know your guy's opinions.thanks -cass =)

2006-12-17 05:03:39 · 19 answers · asked by cassandra b 1 in Paranormal Phenomena

2006-12-17 05:02:21 · 4 answers · asked by marievergamini 1 in Biology

A 2.20 103 kg car rounds a circular turn of radius 14.0 m. If the road is flat and the coefficient of static friction between the tires and the road is 0.7, how fast can the car go without skidding?
m/s

2006-12-17 05:01:51 · 2 answers · asked by ckielblock18 1 in Physics