Chemistry - November 2007

Types of Reactions

Write a balanced equation for each of the following reactions. Then classify each as: synthesis (S), decomposition (D), combustion (C), single displacement (SD), or double displacement (DD).

_______ 1. ____ Na(s) +____ H2O(l) → ____ NaOH(aq) + ____ H2(g)
_______ 2. ____ CO(g) + ____ O2(g) → ____ CO2(g)
_______ 3. ____ FeS(s) + ____ HCl(aq) → ____ FeCl2(aq) + ____ H2S(g)
_______ 4. ____ NaNO3(s) → ____ NaNO2(s) + ____ O2(g)
_______ 5. ____ CH4(g) +____ O2(g) → ____ CO2 + ____ H2O
_______ 6. ____ Fe(s) + ____ CuNO3(aq) → ____ Fe(NO3)2(aq) + ____ Cu(s)
_______ 7. ____ KI(aq) + ____ Cl2(g) → ____ KCl(aq) + ____ I2(aq)
_______ 8. ____ Al(s) + ____ S(s) → ____ Al2S3(s)
Decompostion? 9. __2__ KClO3(s) → _2__ KCl(s) + _3__ O2(g)
_______10. _2__ C4H10(g) + __18_ O2(g) → _8__ CO2(g) + _10__ H2O(g)
11. Zinc metal reacts with aqueous silver nitrate to produce solid silver and an aqueous solution of zinc nitrate.

Balanced Equation:

2007-11-28 13:36:32 · 1 answers · asked by pegasus_puck 4

2 NaCl(s) + H2SO4(aq) ----> 2 HCl (g) + NaSO4(aq)

2007-11-28 13:34:13 · 1 answers · asked by Anonymous

2007-11-28 13:33:08 · 3 answers · asked by Anonymous

I belive my plutonium is oxidizing. what should i do?

2007-11-28 13:25:26 · 11 answers · asked by Sam 3

How can I make sure I do well and succeed in my Chemistry class?

this is Chemistry in college.

What advice can you give me on tips and tricks

2007-11-28 12:32:32 · 1 answers · asked by Smiley 2

1) Na or Na+
2) F or F-
3) Fe, Fe^2 or Fe3+
4)H,H+,H-

My answers 1) Na, 2) F- 3)Fe 4) H-
Am i right

2007-11-28 12:09:50 · 4 answers · asked by nothinbutnet2009 4

a method of removing CO2 from a spacecraft is to allow the Co2 to react with sodium hydroxide.(THE PRODUCTS OF THE REACTION ARE SODIUM CARBONATE AND WATER)
What volume carbon dioxide at 25 degree celcius and 749 mmHg can be moved per kilogram of sodium hydroxide that reacts?
A.301 L
B. 284l
c. 276L
D.310 L
e.620l

2007-11-28 12:09:04 · 1 answers · asked by magdala j 1

2007-11-28 12:04:11 · 1 answers · asked by Anonymous

Please help! The only help the instructions offer is to try writing out the equation for the ionization of aluminum sulfate. It doesn't help. I've tried everything I could think of involving the molar ratio of aluminum sulfate. I can't begin solve this with so little info.

2007-11-28 12:02:51 · 1 answers · asked by Haifa Z 1

Suppose your favourite AM radio stattion broadcasts at a frequency of 1150 kHz. What is the wavelengh, in centimeters, of the radiation from the station?

Please make it clear so I am able to understand.

Thanks

2007-11-28 11:56:54 · 2 answers · asked by Sina 2

What things do we generally see everday that have alloys in them?

2007-11-28 10:45:59 · 2 answers · asked by Julie 2

I know how many moles KHP I used and I know how many moles of base I have. I also have the mass.....or was it volume? I can't remember. Anyway, how do I find the molarity of my base solution?

2007-11-28 10:11:15 · 3 answers · asked by Nacho DeGarvo 3

they dissolve? That is, Does dissolution always mean ions or does it simply mean breaking down into smaller particles?

2007-11-28 10:01:16 · 2 answers · asked by wonderer 1

2007-11-28 09:59:34 · 7 answers · asked by Anonymous

2007-11-28 09:51:47 · 3 answers · asked by Meek Meek 1

a. Ca
b. Fe
c. Br
d. K

2007-11-28 09:49:36 · 3 answers · asked by bigfish444490 2

iron (III) ions in water reacting to potassium thiocyanate.

if the reaction is large then does that mean that there is a lot of iron in the water? and if a small reaction occurs then there is a small amount of iron in the water? why?
if you have a website so i can site it from it would be helpful but if you don't then it's fine.

2007-11-28 09:36:28 · 1 answers · asked by Yuki 2

thanks x

2007-11-28 09:33:57 · 5 answers · asked by Rachel 6

Why are ions charged particles?

2007-11-28 09:25:51 · 4 answers · asked by sar2698 2

What is the empirical formula?What is the answer and how please

2007-11-28 09:13:26 · 3 answers · asked by Dont Disturb 2

burn? How easy/difficult will it be to ignite with the flint?

Yes, I KNOW that there are other ways and other things I could use, but please answer this question before you start asking why I didn't ask where to buy a butane lighter.

On a related topic, (optional question for extra credit) I've seen liquid fuel lighters with flint igniters and gas fuel lighters with piezoelectric igniters, but I've never seen liquid fuel lighters with piezo igniters or gas fuel lighters with flint igniters. I've even asked Zippo representatives at tobacco shops and they're clueless. Anybody know of a reason why the alternative variants wouldn't work? I'd love to have a lighter where I never needed to replace the flint, just fill it with fluid every so often.

2007-11-28 09:07:15 · 1 answers · asked by cdf-rom 7

when 0.100 mol of C6H12O6 is dissolved in 200 mL of water, what is the mole fraction of each component in the solution?

2007-11-28 08:52:27 · 4 answers · asked by confusedkid 3

18. Calculate the pH of 100 ml of 0.100 M formic acid (HCHO2) Ka = 1.8 x 10-4 (10 points)
19. Calculate the pH of a solution containing 100 ml of 0.200 M formic acid (HCHO2) and 100 ml of 0.180 M sodium formate (NaCHO2) (10 points)

20. Calculate the pH of the solution in Question 20 if 100ml of 0.100 M NaOH are added. (15 points)

2007-11-28 08:28:37 · 1 answers · asked by marinebiologystudier 1

Iodine-131 is a beta emitter with a half-life of 8.070 days that is used to treat thydroid cancer. How many days are required to rid the body of 71.0% of any ingested I-131?

2007-11-28 07:33:44 · 1 answers · asked by Nick P 1

2007-11-28 06:50:57 · 9 answers · asked by Anonymous

ZnS + HCl ======> ?
Na2CO3 + HCl ======>?
ZnS is Zinc Sulfide and Na2CO3 is sodium carbonate and HCl is hydrochloric acid...and i need these balanced and completed.

2007-11-28 06:48:38 · 4 answers · asked by naknoi 5

Would this be correct?

H+ + HCN + NaCN --------> H2CN + NaCN

Thanks!

2007-11-28 06:47:44 · 3 answers · asked by Anonymous

1. Has a mass slightly greater than that of a proton.
2. Can also be called a nucleon.
3. Has a positive charge.
4. More than one of the above are correct.
5. None of the above are correct.

2007-11-28 05:47:49 · 6 answers · asked by Anonymous

Consider the lattice energy of any ionic compound. What combination of ions and charges will produce the largest lattice energies?

a. small ions small charges
b.large ions large charges
c. small ions large charges
d. large ions small charges

2007-11-28 05:38:33 · 1 answers · asked by mandymanooche 1

How much heat is released when 9.16 grams of solid calcium hydroxide is added to 293 mL of 7.5 M HNO3?

2007-11-28 05:08:12 · 3 answers · asked by io 1