Chemistry - April 2007

Will fe(OH)3 precipitate from a buffer solution that is 0.60M CH3COOH and 0.10M CH3COONa, if the solution is also made to be 0.001 M in Fe3+? (Ksp of Fe(OH)3 = 6.8x10^-36

2007-04-22 06:11:21 · 3 answers · asked by Heavy-Metal123 3

the proble says, a battery is set up with copper and lead electrodes in contact with CuSO4 and Pb(NO3)2 respectively. if Pb2+ and Cu2+ concentrations are 1 M, what is the overall cell potential ??? i found the E' = .42V. is that enough??

2007-04-22 05:51:47 · 2 answers · asked by Heavy-Metal123 3

Can anyone help me? The volume of 400 mL of chlorine gas at 400 mm is decreased to 200 mL at constant temperature. What is the new gas pressure?

Why is the answer 800 mm Hg?

2007-04-22 05:42:57 · 5 answers · asked by sweetiepuppy10194 3

2007-04-22 05:38:26 · 6 answers · asked by emspence2000 1

The problem gives me: NH4NO2(s) --->N2(g) + ____(l)

2007-04-22 05:03:10 · 1 answers · asked by Kathryn S 1

What is the pH when 30.0 mL of base have been added?

0.85 mol acid
Ka = 2.24×10^-6?

2007-04-22 04:59:12 · 1 answers · asked by tralala1237 1

Thanks for your help everybody, I think I have it. I just want to check your answers on mine with this last one for sure. You guys rock!

2007-04-22 04:57:17 · 3 answers · asked by Kayla C 1

1. Sulfur
2. Salad Oil
3.Newspaper
4.Orange

2007-04-22 04:24:54 · 7 answers · asked by jadoredior33 2

this is a question in my a level chemistry homework, and i cant decided whether it would be neutral or have a more alkali pH...

2007-04-22 04:23:33 · 4 answers · asked by Anonymous

For some reason I am having a lot of difficulty getting this concept into my head ... does anyone have a simple definition or explanation? Thank you!

2007-04-22 04:20:48 · 5 answers · asked by veggie_fta 2

2007-04-22 04:17:30 · 4 answers · asked by jadoredior33 2

I'm usually pretty good in my chemistry lab but this stuff confuses me. I would appreciate if someone could show me how to do it, not just give answers, that way I'll know how to do my next pre-lab, because they build on each other. I'll give you best answer if I understand, thanks! What is:

1.) the mass of potassium hydrogen phthalate for 10mL of 0.2M NaOH

2.) the volume of pure HOAc to make 50mL of 0.05M HOAc.

Any help will be appreciated....thanks again.

2007-04-22 04:16:27 · 3 answers · asked by Kayla C 1

2007-04-22 04:15:34 · 4 answers · asked by Chelsea 1

1. how vigorously it reacts with other molecules
2. how completely it dissociates in aqueous solution
3. the strength of its attraction to water molecules

2007-04-22 04:14:14 · 7 answers · asked by cbz 1

2007-04-22 04:11:59 · 5 answers · asked by jadoredior33 2

How much Na2CO3 is needed to neutralize 200 mL of .05 M Hcl according to the reaction

2HCl + Na2CO3 > 2NaCl + H2O + CO2

the molar mass of Na2Co3 is 106 g/mol, the molar mass of HCl is 36.5 g/mol and the density of the solution is 1.23 g/mL

2007-04-22 04:03:29 · 4 answers · asked by cbz 1

2007-04-22 04:00:21 · 3 answers · asked by cbz 1

2007-04-22 03:45:53 · 2 answers · asked by Anonymous

i have a test soon so i gotta know more about them......also the elements and compounds......... thanks.....

2007-04-22 03:38:18 · 5 answers · asked by loser_anonymous_me haha......... 1

i have a test soon so i gotta know more about them......also the elements and compounds......... thanks.....

2007-04-22 03:37:31 · 3 answers · asked by loser_anonymous_me haha......... 1

2007-04-22 03:30:24 · 5 answers · asked by Matt R 1

IF a 19.1 of the vapor of a volatile liquid is able to fill a 480-mL flask at 100 C and 765 mm Hg what is the molar mass of the liquid? What is the density of the vapor under these conditions?

2007-04-22 02:58:32 · 2 answers · asked by Queen N 1

Is there a mole in every gram of solution? or is there another way of weighing how many moles in a solution/liquid?
I need 0.083 moles of water, how much is that in centimeters or grams?

2007-04-22 02:54:30 · 6 answers · asked by Anonymus 2

16,1 grams crystallized sodium sulphate ( the amount of water molecules are 10) is solved in water and diluted to 1,0 liter in a volumetric flask.

Explain the answer please

2007-04-22 02:47:49 · 2 answers · asked by Anonymous

I'm taking an intro to chemistry class and we are supposed to know what Nitrates and Acetates. One example given in class is CH3CO2. How would I know what is a nitrate and what is an acetate just by looking at a formula?

2007-04-22 02:27:06 · 3 answers · asked by Toothie 2

what is the difference between them?
and what is a binary compound?

2007-04-22 01:50:17 · 5 answers · asked by blubbablub 1

urea is (NH2CONH2),MOL.WT.=60)
-GIVE WHOLE CALCULATION PROCESS

2007-04-22 01:30:18 · 3 answers · asked by Ram Latit P 1

In a balloon, how many grams mass will 1 cubic meter of hydrogen molecules lift?

2007-04-22 01:24:06 · 2 answers · asked by Maximillian 1

I'm in 11th grade so please keep the explanations understandable. Thanks!

2007-04-22 01:22:30 · 6 answers · asked by Sweety01 1

give whole process involved

2007-04-22 01:18:41 · 3 answers · asked by Ram Latit P 1