Chemistry - March 2007

What gas is released

2007-03-15 17:50:38 · 2 answers · asked by chizee 1

2007-03-15 17:45:50 · 1 answers · asked by needhelpn 2

okay, i have a chemistry project:
i have to make a brochure on a chemistry related career, which is forensic chemist...i need to know:
general info
required college and high school courses
brief overview of other closely related areas of study
average salary
colleges and universities that have majors related to it...
and contact info for a professional organizaton related to this career
PLZ HELP IF U KNOW ANYTHING!!

2007-03-15 17:38:27 · 3 answers · asked by sweetchoko09 1

2007-03-15 17:17:41 · 3 answers · asked by amigo 2

2007-03-15 17:16:59 · 1 answers · asked by amigo 2

I am doing an experiment where I dissolve aspirin in water and I heat it so it turns into salycilic acid.

2007-03-15 16:57:52 · 1 answers · asked by jsav 2

2007-03-15 16:14:40 · 7 answers · asked by Metal 4

Which is more cost effective?

Which is produces the most energy?

2007-03-15 15:58:29 · 4 answers · asked by Orlando J 1

What is the formula for butane (C4H10) combusted in air?

2007-03-15 15:47:44 · 5 answers · asked by Ham Wallet 1

"Oxygen molecules have an average speed of 480 m/s at 25 degrees Celsius. What is the average speed of HI speed molecules at that temperature?"

If you understand this question could you please tell me what formula you used to get it? Thanks

2007-03-15 15:38:39 · 2 answers · asked by Bunny Slippers 1

2007-03-15 15:37:59 · 1 answers · asked by Nguyen M 2

Chemistry Question!

2007-03-15 15:37:47 · 5 answers · asked by keeleong11 1

2007-03-15 15:30:38 · 1 answers · asked by Atticus 1

A compound with formula RuCl3•5 H2O is dissolved in water, forming a solution that is apx the same color as the solid. Immediatly after forming the solution, the addition of excess AgNO3 (aq) forms 2 mol of solid AgCl per mole of complex. Write the formula for the likely compound, showing which ligands are likely to be present in the coordination sphere.


2) afer a solution of RuCl3•5 H2O has stood for about a year, addition of AgNO3 (aq) precipitates 3 mol of AgCl per mole of complex. What has happened in the ensuing time?



Could you please show me the steps, too? (pretend i dont know anything about chem, because for some reason, these questions arent getting along with me.)

2007-03-15 15:28:53 · 1 answers · asked by crazeberry11 1

Please show me all the calculations so that I can understand how to solve this problem. Thanks!

2007-03-15 15:27:52 · 3 answers · asked by mhscheer004 1

HNO3?
I dunno another name for nitric acid.
I found aqua fortis, and spirit of nitre,
but it doesn't fit in my crossword puzzle! :(

it needs.. 11 letters

please help!! thanks!!

2007-03-15 15:26:40 · 6 answers · asked by Anonymous

(CoCl2 + NaOH = CoOH + Cl2Na)

(CuCl2 + NaOH = CuOH + Cl2Na)

(FeCl3 + NaOH = FeOH + Cl3Na)

(NiCl2 + NaOH = NiOH + Cl2Na)

2007-03-15 15:18:18 · 6 answers · asked by Anonymous

2007-03-15 15:17:15 · 9 answers · asked by Atticus 1

Hydration of an alkyne, C6H10, gave two ketones in approximately equal amounts. Which of the following alkynes would be expected to give these results? (A) 1 -hexyne, (B) 2-hexyne, (C) 3-hexyne, (D) 3,3-dimethyl-1-butyne. Please explain your answer.

2007-03-15 15:16:50 · 2 answers · asked by TheAnswerIsNo 1

point using 88.43 ml of .102 M NaOH(aq). Assumming that the acid has only 1 ionizable hydrogen, calculate the molar mass of the acid.

2007-03-15 15:03:27 · 1 answers · asked by Anonymous

why does pulse increase with stress or exercise.....its a question for homework but i just kind find it anywhere and parents have no clue like in 8th grade so dont have it as a high school answer

2007-03-15 14:34:13 · 5 answers · asked by bball_plyr_11 2

Step 1: What substance is reduced?

Step 2: What substance is oxidized?

Step 3: What is the half reaction for oxidation?

Step 4: What is the half reaction for reduction?

Step 5: What is the net balanced equation?
Step 6: What is the reduced equation?




2. When first learning to balance equations, we learned that the number of atoms of each element in the products and reactants must be equivalent. What are some additional factors that must be taken into account when balancing equations for redox reactions?

3. What are half reactions?

4. What two aspects of the half-reaction equations must be balanced?

2007-03-15 14:33:20 · 2 answers · asked by megan c 1

Here's the question:

"An unknown gas effuses at one half the speed of oxygen. What is the molar mass of the unknown? It is either HBr or HI. Which gas is it?"

If you know it, could you please show me how you got it, and what formula you used? Thanks.

2007-03-15 14:30:30 · 1 answers · asked by Sam-I-Am 3

2007-03-15 14:26:04 · 4 answers · asked by Debra H 1

2007-03-15 14:21:23 · 6 answers · asked by oscar o 1

Crystallization of sodum acetate from a supersaturated solution occurs spontaneously. What can you deduce about the signs of DeltaS and DeltaH?

2007-03-15 14:09:27 · 2 answers · asked by Ashley 2

If the gross amount of energy produced in the glycolysis pathway is 4 ATP and the net amount of energy produced in the glycolysis pathway is 2 ATP, why are these different?

2007-03-15 14:07:58 · 2 answers · asked by kd0284 2

so... My mom made some pork chops and some how a piece of papery/platicy thing (probably a wrapper from the pork chops) ended up in the oven.

Well, obviously, it made the house smell terrible and what not, but could it be harmful to us?

OH! And my mom ate one of the porkchops!!

How concerned should I be? I Have two little dogs here, can they get sick?

2007-03-15 13:52:15 · 3 answers · asked by Tiff 5

2007-03-15 13:51:58 · 1 answers · asked by bollocks 2

If steel wool (iron) is heated until it glows and is placed in a bottle containing pure oxygen, the iron reacts spectacularly to produce iron(III) oxide.
Fe(s) + O2(g) Fe2O3(s)

If 1.15 g of iron is heated and placed in a bottle containing 0.0211 mol of oxygen gas, what mass of iron(III) oxide is produced?

2007-03-15 13:46:33 · 1 answers · asked by cookee456 1