Chemistry - October 2006

school

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

none

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

2006-10-03 10:20:49 · 6 answers · asked by anonymous 2

I am doing a chemistry research paper and I need some sort of answer asap because it is due in two days. The paper is on oncology.

2006-10-03 10:14:25 · 4 answers · asked by Anonymous

A sample of a compound containing C,O, and silver (Ag) weighed 1.372g. On analysis it was found to contain 0.288g O and 0.974g Ag. The molar mass of the compound is 308.8g/mol.

2006-10-03 09:50:00 · 4 answers · asked by Anonymous

I just thought about that in class. What's smaller than an atom? Please try not to use big words! Take it easy on my tiny 9th grade brain! Please, and thanx!

2006-10-03 09:28:19 · 9 answers · asked by Read the nametag, Duh! 4

A sample of a compound containing C,O and silver (Ag) weighed 1.372g. On analysis it was found to contain 0.288g O and 0.974g Ag. The molar mass of the compound is 308.8 g/mol. from this data how can I determine the empirical and the molecular formulas of the compound.

2006-10-03 09:19:15 · 1 answers · asked by hetrp 1

11.15 grams of pure iron are allowed to react with oxygen to form an oxide, FexOy. If the product weighs 14.3g, what would be the simplest formula of the compound?

2006-10-03 09:09:33 · 1 answers · asked by hetrp 1

2006-10-03 09:03:42 · 6 answers · asked by red_red_downcast 1

2006-10-03 09:02:25 · 2 answers · asked by red_red_downcast 1

..compared to other materials such as titanium, diamond, quartz, etc? Does it have a high melting point?

2006-10-03 09:02:16 · 6 answers · asked by bit_slicer 2

2006-10-03 09:00:42 · 2 answers · asked by red_red_downcast 1

2006-10-03 08:57:57 · 7 answers · asked by red_red_downcast 1

2006-10-03 08:56:53 · 12 answers · asked by red_red_downcast 1

OK, I know that salt water boıls at a higher temperature than fresh water, so therefore fresh water boils quicker. What I want to know is, do they both increase in temperature at the same rate? If given the same heat and conditions, do they both increase in temperature at the same rate but then salt water raches its boiling point later? Or does one of them heat up faster before boiling? and why? why are the solutes changing the properties of the water? thanks

2006-10-03 08:43:01 · 4 answers · asked by mr_machin1973 1

A. Zinc is the reducing agent
B. Zinc is more reactive thatn nickel
C. Zinc has been oxidized
D. All of the above

2006-10-03 08:03:25 · 4 answers · asked by cetinnovations 1

2006-10-03 07:52:07 · 3 answers · asked by redheadsushi86 1

2006-10-03 07:34:15 · 2 answers · asked by sophie 1

2006-10-03 07:30:34 · 13 answers · asked by Anonymous

Substance W contains 15.2% by mass of sodium and 53% by mass of bromine the rest is O2. When W is thermally decomposed, a white solid, X and oxygen are the only products. An aqueous solution of X gave a cream precipitate, Y, when aqueous silver nitrate and nitric acid are added.
a)Calculate empirical formula of W
b)Name X and Y
c)Work out the balanced equation for the thermal decomposition of W.

2006-10-03 07:12:20 · 2 answers · asked by Anonymous

Thought I would try a different approach to getting at least TWO units of feedback for my question.
Can anyone balance these 3 redox equations for me? Since I have no way to type the charges I have put them in parentheses. Hey if you can balance these I will consider you a genius of the highest level.

Sn (2+) + IO3 (1-) --------> Sn (4+) + I (1-)

NO3 (1-) + H2S -----------> NO + S

Mn (2+) + BiO3 (1-) --------> MnO4 (1-) + Bi (3+)

I need to see if I am on the right track, but I am kind of having problems with balancing the charges. THANKS!

2006-10-03 06:31:48 · 2 answers · asked by flies_on_a_wall 1

2006-10-03 06:23:05 · 4 answers · asked by Leonard 1

Can you balance these 3 redox equations for me? Since I have no way to type the charges I have put them in parentheses.

Sn (2+) + IO3 (1-) --------> Sn (4+) + I (1-)

NO3 (1-) + H2S -----------> NO + S

Mn (2+) + BiO3 (1-) --------> MnO4 (1-) + Bi (3+)

I need to see if I am on the right track, but I am kind of having problems with balancing the charges because I am a beginner chemistry student. I am a step away from having if completely click for me. THANKS!

2006-10-03 06:08:49 · 3 answers · asked by flies_on_a_wall 1

2006-10-03 05:37:42 · 2 answers · asked by hetrp 1

should i employ titration?spectroscopy?

2006-10-03 05:37:27 · 2 answers · asked by anserina 2

2006-10-03 05:28:00 · 2 answers · asked by Anonymous

Calculate the number of mg of Mn2+ left unprecipitated in 100 mL of a 0.1000 M solution of MnSO4 to which enough Na2S has been added to make the final sulfide ion (S2-) concentration equal to 0.0394 M. Assume no change in volume due to the addition of Na2S. The pKsp of MnS is 14.960

2006-10-03 05:12:03 · 4 answers · asked by vem1225 1

2006-10-03 05:09:15 · 3 answers · asked by prempsi 1

2006-10-03 04:57:56 · 5 answers · asked by Covers 1

2006-10-03 04:37:51 · 2 answers · asked by Abdullah 1