Chemistry - July 2007

The solubility product constant for Sr(IO3)2 is 1.14 * 10^-7. What volume of 0.0250 M S2O3^2- would be required to tirate a 10.00 mL sample of a saturated solution of Sr(IO3)2?

I got this far: 1 mol of S2O3^2- * 1 mol IO3-/ 6 mol S2O3^2- = mol IO3-

2007-07-03 14:19:42 · 3 answers · asked by Alan l 1

How many grams of Potassium Sulfate must be added to 6.00 x 10^-2 mL of water to form a 2.50m<-----molal solution

2007-07-03 12:54:48 · 4 answers · asked by Anonymous

(or sodium carbonate).
what is it exactly?
in the kitchen of course.
is washing soda the stuff that you put in the washing machine?
or the stuff you put in cakes?
or what!!!!!???/

2007-07-03 12:41:44 · 4 answers · asked by Anonymous

2007-07-03 11:56:53 · 4 answers · asked by Anonymous

2007-07-03 11:49:22 · 3 answers · asked by Anonymous

2007-07-03 11:49:17 · 2 answers · asked by talarknhansum 4

I heard in the news that some kids stole a 150lb canister of compressed chlorine gas.

Is this 150lb nett or gross?

2007-07-03 11:31:12 · 3 answers · asked by Dharma Nature 7

all 0.1M?

a. C12H22O11 with i=1
b. NaCLwith i=2
c.CaCl2with i=3
d.Ba(CLO3)2 with i=3

2007-07-03 11:27:17 · 1 answers · asked by Tommy D 1

a.the vapor pressure is lowerd
b. the freezing point is increased
c.the osmotic pressure is increasd.
d. teh boiling point is increased.

2007-07-03 11:22:47 · 1 answers · asked by Tommy D 1

2007-07-03 08:46:12 · 2 answers · asked by Ryan O 2

"The patients are your textbook, the sickbed is your study"

2007-07-03 08:34:02 · 2 answers · asked by Anonymous

2007-07-03 06:43:00 · 5 answers · asked by Anonymous

2007-07-03 06:42:36 · 3 answers · asked by Anonymous

2007-07-03 06:08:47 · 7 answers · asked by DJ 2

2007-07-03 05:05:43 · 22 answers · asked by Anonymous

A 2.0 g Samples of C2H2 (g) is burned in a bomb calorimeter at 25%. 23.8 kcal of heat energy are evolved. for the combustion of 1.0 mole of C2H2 (g) at 25 degrees C. Calculate the Delta E and Delta H.
I already know the answer just need to know how to set it up.

2007-07-03 04:22:43 · 2 answers · asked by Anonymous

it is found when running a DHA ( Detailed Hydrocarbon Analysis)

2007-07-03 04:22:14 · 3 answers · asked by Berto731 1

(a) zinc carbonate
(b) zinc hydroxide
(c) zinc nitrate
(d) zinc oxide

2007-07-03 04:20:19 · 3 answers · asked by yuk 2

2007-07-03 04:12:38 · 2 answers · asked by rhea 1

2007-07-03 04:01:59 · 5 answers · asked by Anonymous

A 112.6g mass of unknown material is submersed in 102mL of water to yield a final volume of 126mL. The apparent density of the material is....?

I don't want to know the answer, just a brief explanation on how to solve this

2007-07-03 03:48:38 · 10 answers · asked by Liz 4

I was taught that there are equal number of electrons that spin clockwise as counterclockwise.This dosen't make sense.If you have one electron that spins CW next to one that spins CCW,all you would have to do is turn one upsidedown and they would both spin in the same direction.What do you think?

2007-07-03 03:29:33 · 8 answers · asked by just thinking 6

2007-07-03 03:29:08 · 12 answers · asked by nia j 1

ethyl eter.

2007-07-03 03:05:50 · 2 answers · asked by Anonymous

??

2007-07-03 02:57:37 · 4 answers · asked by Anonymous

Materials:
phosphoric acid (H3PO4)
5.0g solid potassium nitrate
5.0g solid potassium carbonate
potassium chloride
potassium hydroxide
phenolphthalein

apparatus:
evaporating dish
glass rod
watch glass
250ml beaker
electronic balance
filter paper and funnel
bunsen burner
usual volumetric measurement apparatus

2007-07-03 02:36:49 · 2 answers · asked by kamisen05 1

Consider the system 4NH3(g) + 3O2(g) = 2N2(g) + 6H2O(g) + heat
How will the amount of N2 be affected by decreasing the temperature?

2007-07-03 02:25:06 · 1 answers · asked by Anonymous

According to Le Chatelier’s principle, which direction will the equilibrium shift if the concentration of the H2C2O4 is increased according to this reaction at equilibrium:
2Ce(IO3)4(aq) + 24 H2C2O4(aq) —> Ce2(C2O4)3(aq) + 4I2(aq) + 42 CO2(g) + 24 H2O(l)

2007-07-03 02:24:34 · 4 answers · asked by Anonymous

I waqs doing some homework involving glue and well..after reading so much about Global WArming, i wanted to find out. Which is more harmful to the environment, staples or glue?
Are they biodegradable or non-biodegradable?
Just curious...

2007-07-02 22:41:40 · 4 answers · asked by Yuppy kid! =P Roxzzz.... 2

2007-07-02 21:07:26 · 2 answers · asked by mallikarjuna D 1