Chemistry - November 2006

I need steps on how to do it and the actual answer because I am a beginner to chemistry . I know the balanced formula, I just dont know how to take it farther and find the grams of oxygen.

2C812 + 25O2 ---> 16CO2 + 18H2O is the balanced equation.

Thank you very much!!

2006-11-10 10:49:48 · 2 answers · asked by Andrew\ 1

a) AlOH
b)Al (OH) 2
c) Al (OH) 3
d) Al3OH

2006-11-10 10:49:07 · 6 answers · asked by Lindsay A 1

2006-11-10 10:43:44 · 9 answers · asked by Anonymous

So for all you chemisty majors out there, I really need help on how you would do this. If you could also try and write the formula out too that would be awesome. Also, one pound of gas is 454 grams.

Thanks!

2006-11-10 09:05:37 · 2 answers · asked by Andrew\ 1

2006-11-10 08:58:53 · 4 answers · asked by James 2

An unknown diatomic gas effuses at a rate that is 0.250 times the rate of N2 at the same temperature. What is the Molar mass and identity of the gas?

2006-11-10 08:57:49 · 3 answers · asked by uf2006mvp 1

oxidation numbers for a problem like
H2SO4

and just oxidation numbers in general

2006-11-10 08:56:41 · 2 answers · asked by sarah anne 1

Electron Configuration. I need it for help with my HW please.

2006-11-10 08:50:54 · 2 answers · asked by Rosella DeAlva 1

we need to understand:

oxidation numbers
how to combine acids


PLEASE help us and explain as much as you can!!!

2006-11-10 08:45:08 · 2 answers · asked by sarah anne 1

10.0 liters of oxygen are contained in a diver's tank at 20.0C and 2.0 atm pressure. What is the pressure when the tank is left exposed to the sun and it is heated to 45C?

Ok--I know that [(Pressure1*Volume1)/Temperature1] = [(Pressure2*Volume2)/Temperature2]

but how would I solve this? I don't know what the volume increases to, so is this solvable?

2006-11-10 08:20:02 · 4 answers · asked by Josh 5

2006-11-10 07:58:38 · 2 answers · asked by heatwave 1

2006-11-10 07:47:04 · 4 answers · asked by mask 1

2006-11-10 07:43:23 · 3 answers · asked by mask 1

The below reaction results in two moles of a single ionic compound as a product.

4V + O2 -->

2006-11-10 07:35:26 · 4 answers · asked by mimi 1

If you know what the peoperties of salt are, can you please tell me, and can you tell me where you found/got theproperties of salt?

2006-11-10 07:16:37 · 4 answers · asked by blondiee 1

i have to do a project Adopt-An-Element
my element is ZINC # 30
here what we need to have
COST:........ for
Element belong to an.......family
Origin of Name:.........
Interesting Info: may include important uses, interesting fatz, common compounds, etc.
Discovery & Date:..........

If you guys have any website about the element ZINC please tell me
THANK YOU VERY MUCH

2006-11-10 06:56:47 · 1 answers · asked by Anonymous

2006-11-10 06:49:22 · 3 answers · asked by Diana 1

In our chemistry lab we've been observing this eraser inside a bottle hanging from a pencil. (decription of the model) There is water inside the bottle and the eraser is tied with a rope hangin from a pencil. The more we observed everyday .. the more salts we see at the bottom of the bottle and also more on the rope and pencil. however there is no salt on the eraser that's been in water for almost 11 weeks now. Why is there more salt at the bottom of the bottle, rope, and pencil but none on the eraser?

2006-11-10 06:43:27 · 2 answers · asked by mizz ADOHRable 1

2006-11-10 06:41:27 · 1 answers · asked by His 5

The mass of water needed to fill a different flask is 183.07 g. The density of water at 0.99754. If the temperature is 23.0 deg. C, what is the volume of the flask in liters?
please explain

2006-11-10 06:34:09 · 2 answers · asked by smile 1

please.. please... nobody experiment before answering!

Question is based on a scene I saw in a movie. Guy drops a cig in a car's gas tank and it explodes. I started thinking Nahhhh... needs a spark or an open flame to make that happen

2006-11-10 06:32:33 · 19 answers · asked by Anonymous

The air is 78.0% nitrogen and 22.0% oxygen (by number of moles).
Pressure = 1.030 atm
Temp = 21.8 deg. C
Volume = 1.020 L

R = 0.0821 L*atm/mol*K
N = 14.01 g/mol
O = 16.00 g/mol
How many moles of gas are there in the flask?
How many moles of nitrogen gas are there?
How many moles of oxygen gas are there?
What is the overall density of the air?
What is the mass of air in the flask?
please explain

2006-11-10 06:31:01 · 1 answers · asked by smile 1

Oxidation numbers!?
Hi i just need someone to write down and explain what the oxidation number is of H2SO4 - how would you work out Hydrogen's number, Sulphurs number and oxygen's number?

Please explain as thoroughly as possible!

Thanks

Harry

2006-11-10 06:28:25 · 2 answers · asked by Anonymous

What are the stabilizing factors in the hydrate of ninhydrin which causes the hydration to be attached to the center carbonyl group rather than one of the other two outside carbonyls?

2006-11-10 06:18:06 · 2 answers · asked by DanD 1

2006-11-10 06:03:52 · 3 answers · asked by bug_ugui 1

Take for example this reaction: 2NaCl + 2H2O --> 2NaOH + Cl2 + H2

Do the reactants

weigh more because Cl2 and H2 are gases
weigh the same as the products
weigh more than the products because the reaction isn't perfect

2006-11-10 06:00:38 · 11 answers · asked by Anonymous

2006-11-10 05:54:32 · 3 answers · asked by coolpuffin 2

Which of the following 2 substances will react to form an ester?
A. sulfuric adic and sodium hydroxide
B. ethyl alcohol and soium hydroxide
C. acetic acid and sodium chloride
D. acetic acid and ethyl alcohol

Which of the following chaacteristics is not shared by both detergents and soaps?
A. a long carbon chain basic structure
B. Formationof insoluble substances when reacting with minerals
C. being classified as organic salts

A fer drops of phenolphthalein are placed in an acid of unkown concentration. When this acid is titrated with a standard base solution, the endpoint will be signaled by which of the following color changes?
A. red to blue
B. blue to pink
C. colorless
D. pink to colorless

Which of the following statements is not true about acid rain?
A. it can destroy necessary parts of aquatic food chains
B. ItspH is below 5.6
C. It can damage crops and forests.
D. It is composed entirely of carbonic acid and water

as allways thank you for every thing

2006-11-10 05:53:09 · 4 answers · asked by cetinnovations 1

they are:
1. Molecular structures are called ________
2. _______ is a force that binds atoms together.
3. ________ are combinations of atoms.
4. _________ is made from petroleum.

Crossword:
positively charged part of the atom (8 letter word)((proton does not work!))

an electron (6 letter word)

2006-11-10 05:38:51 · 2 answers · asked by i_heart_jonathan<3 1

2006-11-10 05:32:52 · 9 answers · asked by Anonymous