Chemistry - March 2007

2007-03-24 08:56:25 · 1 answers · asked by eldeebminex 2

If you mix 5.24 L of hydrogen sulfide gas (H2S; MM = 34.08 g/mol) and 2.94 L of oxygen gas (O2, MM = 32.00 g/mol), what volume of sulfur dioxide (SO2, MM = 64.06 g/mol) gas can you make?

2H2S(g) + 3O2(g) --> 2SO2(g) + 2H2O(g)

Best answer to first correct!!!
THANK YOU!

2007-03-24 08:56:23 · 1 answers · asked by invu4uraqt868 1

I am going to take chemistry in 11th grade (right now i am in 10th grade) I heard chemistry is really hard, and I wanted to know if there are any websites, places, books, or anything that teaches the basics so I can be prepared. Yes, I probably will go to extra help and maybe get a tutor when I am taking chemistry, but is there anything that would be useful before taking chemistry? Thanks =)

2007-03-24 08:31:07 · 5 answers · asked by Anonymous

2007-03-24 08:24:47 · 7 answers · asked by Anonymous

what is mean life of radium if its half life is 3 min?

2007-03-24 08:24:23 · 2 answers · asked by Anonymous

I've read that natural gas will not ignite unless the fuel/air ratio is between about 5 and 15%. Why does the ratio need to be so near the stoichiometric ratio for combustion to occur? Why can't there be limited combustion of the gas in the presence of any oxygen?

2007-03-24 08:03:31 · 2 answers · asked by Anonymous

2007-03-24 07:55:26 · 2 answers · asked by Talos 1

Starting with 14.8 ml of 3.30 × 10−2 M BaI2. So again, how many grams of MgSO4 can be added to the solution before BaSO4 begins to precipitate ?

2007-03-24 07:39:52 · 3 answers · asked by .§aqua§. 1

Scientific pleez!!

2007-03-24 07:26:34 · 1 answers · asked by tennisluver101 2

(rest of question) dishwasher rather than cold water.

2007-03-24 07:22:52 · 7 answers · asked by Anonymous

4 NH3 + 5 O2 > 2 NO2 + 6 H2O

How many grams of NO2 will form along with 1.55x10^4 L of water vapor at STP?

2007-03-24 07:13:11 · 2 answers · asked by Serenity 2

Why would the manufacturers of Diet Pepsi produce and bottle the soda at very cold temperatures?


thanks

2007-03-24 07:11:51 · 3 answers · asked by Anonymous

specific heat of ice: 2.10 J/(g deg C)
specific heat if water: 4.18 J/(g deg C)
heat of fusion: 333 J/g
heat of vaporization: 2258 J/g

2007-03-24 06:52:11 · 3 answers · asked by Kayla H 1

Is the stuff that makes neon lights a plasma. Or, is it a gas. Or is plasma a special kind of gas. Answer all of these.

2007-03-24 06:46:27 · 3 answers · asked by charley c 1

Considering that the following reaction occurs at room temp and pressure:

2Cl (g) ------> Cl2 (g) Delta H= -243.4kJ

Would 2Cl (g) or Cl2 (g) have a higher enthalpy? Please explain.

2007-03-24 06:38:30 · 1 answers · asked by The monkey did it! 1

assume the control mass is the room, and all inanimate objects within it.

2007-03-24 06:37:58 · 8 answers · asked by Anonymous

1) CH4 2) CH4 3) HF 4) CH4

2007-03-24 06:12:16 · 2 answers · asked by Kayla H 1

im going to try it and before i do i want to know if it explodes or something.

2007-03-24 06:04:15 · 21 answers · asked by Collin S 1

state of iodine. what is the oxidation state of iodine in the product?


Reaction under Andrews’ conditions
In the next titration you will see that the same oxidant, IO3-, and reductant, I-, can undergo a different reaction by altering the conditions. The reaction will again be done in acidic solution, but this time will contain a large concentration of Cl- (obtained by adding concentrated hydrochloric acid to the reaction vessel). This titration will also illustrate yet another visual means of detecting the end-point.

Weigh accurately about 2.0 g of potassium iodide and make it up to 250 ml of aqueous solution in a volumetric flask. Transfer 25 ml of this solution by pipette to a 250 ml stoppered bottle, then add 25 ml of water, 60 ml concentrated hydrochloric acid (CARE – CORROSIVE - do this procedure at the sink), and about 5 ml of CH2Cl2 (TAKE CARE - do this procedure in the fume hood). Cool the bottle to room temperature, then add, from a burette, a standard 0.

2007-03-24 06:01:40 · 1 answers · asked by cat_ren_03 1

sodium + water ---> sodium hydroxide + water??

2007-03-24 05:42:06 · 7 answers · asked by tia 1

2007-03-24 05:27:37 · 4 answers · asked by nonya 1

to the circuit is weakly illuminated, showing that a weak current is passing through it. How can the conductivity of the solution be increased?
a)by doubling the amount of water in the solution
b)by adding calcium chloride (CaCl2) to the solution
c)by bubbling oxygen gas (O2) through the solution
d)by increasing the quantity of the solution

2007-03-24 05:25:32 · 2 answers · asked by Anonymous

Suppose a bacterium has a diameter of 0.6 micron. What is the lowest frequency of light that could be used to resolve it? (1 micron = 1 × 10^—6 m)
a)2 × 10^2 s—1
b)5 × 10^2 s—1
c)5 × 10^14 s—1
d)2 × 10^—15 s—1

2007-03-24 05:24:01 · 1 answers · asked by Anonymous

before AgBr begins to precipitate ?

2007-03-24 04:59:12 · 4 answers · asked by Paul C 1

Ksp = 8.10 x 10−12 (Neglect the basic properties of CO3−2).

2007-03-24 04:54:02 · 5 answers · asked by Paul C 1

2007-03-24 04:46:41 · 4 answers · asked by nini n 1

What's the full form of M.ch. in medical degree?

2007-03-24 04:28:26 · 6 answers · asked by manas b 1

A SMALL AMOUNT OF BASE IS ADDED TO THE SYSTEM

2007-03-24 04:01:09 · 3 answers · asked by madison t 1

how can two minerals have the same chemical composition but different physical properties?

2007-03-24 04:01:04 · 2 answers · asked by ♥♫_jasmine_♫♥ 2

2007-03-24 03:57:40 · 4 answers · asked by Anonymous