Science & Mathematics - 3 October 2006

How would i figure what the max molar yiled of H2 is when 1.46 g Mg is added to 500 mL of 0.2M CuSO4?
the equation is
2Mg+2CuSO4+H2O--->2MgSO4+Cu2O+H2

i got 0.1M but im not sure if this is correct??
and what is the limiting reactant? i got the Mg to be it, is that right?
THANKSSSSS!!!! :)
10 points are yours if you can explainit the best! :)

2006-10-03 11:10:12 · 3 answers · asked by Anonymous in Chemistry

...I know I already asked this but the answer I chose (-1/6) was wrong. I'm pretty sure the correct answer is -6. Please help and show me how to solve

solve for p: 1/2 (1/3 - 1/p) = 1/4

2006-10-03 11:07:12 · 10 answers · asked by clara 1 in Mathematics

2006-10-03 11:07:11 · 4 answers · asked by Lindsey R 1 in Biology

we got this question in physics and i was wondering if you could explain to me how to do it. i started(work below) but not sure if i'm doing it right.

A 438kg car is accelerating at 2.55 m/s^2. if the coefficient of friction felt by the car is .0500, what is the total force acting east on the car? (hint: 4 calculations needed)

1st i did F=ma
438kg*2.55m/s^2 and got 1120 N

then i did Fsubf=uFsubn
.0500*1120N=56N

then i did 1120N -56 N=1064N
i thought this was the net force. but it says i need 4 calculations and i only have 4.

Could you explain what i'm doing wrong?

Thank you so much

2006-10-03 11:06:42 · 2 answers · asked by Anonymous in Physics

I've had no recent surgeries. Hemoglobin is 12.0

2006-10-03 11:06:42 · 8 answers · asked by JS 2 in Medicine

2006-10-03 11:06:33 · 5 answers · asked by sophie_beautiful2000 1 in Biology

if u throw a frozen bean of the empire state building how fast would it b going when it hits the deck

2006-10-03 11:06:10 · 8 answers · asked by simon s 1 in Physics

seriously how do we know that? how do we know they're not just trying to make a baby?

2006-10-03 11:04:41 · 6 answers · asked by Future Mrs. Beuerlein 2 in Zoology

2006-10-03 11:03:57 · 8 answers · asked by Anonymous in Mathematics

2006-10-03 11:03:33 · 3 answers · asked by Anonymous in Chemistry

2006-10-03 11:01:11 · 1 answers · asked by Anonymous in Chemistry

I've heard several answers to this question, like bio, chem, zoology. and agricultural sci. Which is best?

2006-10-03 10:58:56 · 7 answers · asked by sunny skies 2 in Other - Science

I looked into dictionnaries, I searched in the internet but I could not find any answers.
Help me plz.

2006-10-03 10:58:46 · 1 answers · asked by hotty 3 in Other - Science

i need it for my bio paper. please help!!

2006-10-03 10:56:10 · 1 answers · asked by yankeeskid247 2 in Biology

2006-10-03 10:54:07 · 10 answers · asked by comuter1_0_1 4 in Mathematics

And don't say because the air is thinner the higher you go up, i already know that. I need to know why it's DENSITY decreases or i'm going to get a C on my homework grade.

2006-10-03 10:53:20 · 6 answers · asked by Bubbles 2 in Weather

Density in water is determine based on the amount of salt added in the water. What's the relevance of density of liquids to our daily lives?

2006-10-03 10:51:39 · 3 answers · asked by Oscar A 1 in Chemistry

2006-10-03 10:51:20 · 10 answers · asked by nati c 1 in Geography

2006-10-03 10:50:05 · 10 answers · asked by gary a 1 in Biology

I was thinking it was the the study of living things but i might be wrong.

2006-10-03 10:49:54 · 6 answers · asked by sophie_beautiful2000 1 in Biology

school

2006-10-03 10:49:04 · 4 answers · asked by brittany torres 1 in Chemistry

none

2006-10-03 10:46:42 · 4 answers · asked by erika f 1 in Chemistry

I have tried looking everywhere on the internet and can't find on. Please help me. Does anyone know where I can get one?

2006-10-03 10:42:20 · 7 answers · asked by Megan D 1 in Mathematics

and fahrenheit ti celsius


examples-48 Fahrenheit to Celsius
18 Celsius to Fahrenheit

2006-10-03 10:38:26 · 10 answers · asked by christine [♥] 2 in Weather

how much electricity do i need to supply a 10 bedroom house?

2006-10-03 10:38:07 · 3 answers · asked by kizito k 1 in Physics

that the cord makes a constant angle of 37degrees with the vertical. Find (a) the push magnitude and (b) the tension in the cord.

2006-10-03 10:34:35 · 1 answers · asked by gods1princesschanel 1 in Physics

2006-10-03 10:34:06 · 6 answers · asked by OPALEWSKI D 1 in Other - Science

2006-10-03 10:34:01 · 12 answers · asked by Anonymous in Other - Science

by how much will the Earth radius increase?

10 points for the first correct answer

(you should be a bit suprised.. as how much it will increase by because of one meter..)

2006-10-03 10:30:40 · 7 answers · asked by Desert 4 in Earth Sciences & Geology

2006-10-03 10:29:44 · 30 answers · asked by Bubbles 2 in Weather