Chemistry - February 2007

I have a question which asks me to do just that, but I can't quite figure out how?

2007-02-21 13:05:40 · 1 answers · asked by Random G 3

I need to know the name of the molecule at this URL. I assume that both molecules pictured are the same, but I don't know for sure. If they are different, can you please name both of them?:

http://photos.hi5.com/0000/309/478/3GEX8E309478-02.bmp

10 points to whoever gets this first.

Thanks.

2007-02-21 13:03:44 · 2 answers · asked by Think. 3

Which of the following are true statements ?



a) Reactants are generally favored in an exothermic reaction


b) At low temperatures, product-favored reactions are usually exothermic


c) In general, thorougly mixed reactants will result in a fast reaction rate


d) The reaction 2SO3(g) → 2SO2(g) + O2(g) is product-favored. We
would expect that reaction is exothermic with a value of Kp greater than one


can be more than one answer

2007-02-21 13:02:01 · 1 answers · asked by Anonymous

2007-02-21 13:00:27 · 2 answers · asked by Jordan P 1

Na2 C2O4 + AgNO3 ---> AgC2O4 + NaNO3

2007-02-21 12:58:31 · 1 answers · asked by qwerty123 1

but not back agan? So, one side allows the water to pass, but it cant go back through once its on the other side. non organic osmossis.

2007-02-21 12:52:57 · 2 answers · asked by tjcsonofallnations 3

2007-02-21 12:51:45 · 2 answers · asked by andy x 1

How many liters of hydrogen gas are collected over water at 22°C and 725 mmHg when 0.73 g lithium reacts with water? Aqueous lithium hydroxide also forms.

2007-02-21 12:42:03 · 1 answers · asked by pinay804 2

2007-02-21 12:41:30 · 3 answers · asked by alexn1018 2

it says to think about their chemical structures.. *confused*

2007-02-21 12:36:16 · 1 answers · asked by simply.me 2

Chloroacetic acid, HC2H2ClO2, is a stronger monoprotic acid than acetic acid. In a 0.10 M solution, the pH is 1.96.


The Ka for chloroacetic acid is ???

2007-02-21 12:34:13 · 1 answers · asked by Anonymous

2007-02-21 12:21:11 · 5 answers · asked by DGR 1

How should i set this up? i need help?

2007-02-21 12:09:47 · 4 answers · asked by Anonymous

Question 1:
If 50 liters of nitrogen (N2) weigh 56g and and 50 liters of hydrogen (H2) weigh 4.0g, how much would 50 liters of ammonia (NH3) weigh?

Question 2:
How many liters of hydrogen chloride (HCl) may be produced from 100 liters of H2?

Question 3:
How many cubic feet of oxygen (O2) are needed to convert 100 cubic feet (100cf) of carbon monoxide (CO) to carbon dioxide (CO2)?

Question 4:
How many liters of oxygen (O2) must react with sulfur dioxide (SO2) to produce 50 liters of sulfur trioxide (SO3)?

Question 5:
How many liters of hydrogen (H2) are needed to produce 100 liters of ammonia (NH3) by direct combination with nitrogen?


Question 6:
How many milliliters of carbon dioxide (CO2) can be formed when carbon (C) is burned in 1 liter of oxygen (O2)?

Question 7:
If 10 liters of hydrogen (H2) weigh 1.0g and 10 liters of oxygen (O2) weigh 16g, how much would 10 liters of water vapor (H2O) weigh

its really important..so if anyone can help please do

2007-02-21 12:00:05 · 2 answers · asked by Anonymous

to change chlorine to a gas
to add an electrom to the chlorine atom
to remove an electron from the sodium atom
to bring together the sodium and the chloride ions

2007-02-21 11:41:13 · 1 answers · asked by elegant_disaster 1

A) Al 3+

B) N 3-

C) Na+

D) F-

2007-02-21 11:38:24 · 4 answers · asked by Anonymous

The question says:

Chloroform is an organic liquid commonly found in a chemistry laboratory, and is fairly volatile. The density of the vapor at a pressure of 220 mmHg and 25C is 1.42 g/L. Calculate the molar mass of chloroform.

Do I use the ideal gas law for this: PV=nRT?
Then P=220mmHg, T=(25C+273), and R=0.0821. But what is thre volume? Is there a way to figure out the volume using density?

Also, what exactly is molar mass? I know that if you use the formula above, n=the number of moles. Is the question asking how many grams of chloroform there are?

2007-02-21 11:37:29 · 1 answers · asked by Anonymous

How many reactants are in a synthesis reaction?

2007-02-21 11:28:33 · 4 answers · asked by JIMMYISAHOTTIEWITHABODY!1!!ONE!! 2

2007-02-21 11:25:51 · 1 answers · asked by Anonymous

2007-02-21 11:02:58 · 2 answers · asked by D0z 1

1. An atom is electrically neutral.

2. The mass of an atom is uniformly distributed throught the atom.

3.Metal foil experiments led to the concept that an atom has a nucleus.

4. An oxygen-16 atom has the same number of protons as an oxygen-17 atom.

5.All atoms of a specific element have the same number of protons.

2007-02-21 11:00:17 · 3 answers · asked by Anonymous

2007-02-21 10:51:17 · 2 answers · asked by Heell yeaah! 3

Please demonstrate stepwise the mechanism for the formation of anthraquinone from
2-benzoylbenzoic acid, clearly indicating the role of the sulfuric acid. I know this is a cyclodehydration reaction, but I can't demostrate the steps. Thanks!!

2007-02-21 10:47:46 · 2 answers · asked by webogirl 2

This is for 12th grade level chemistry.

How does the Bohr model of the atom differ from the Rutherford model?

I'm supposed to ask a bunch of people and see which answers are most common and then have some answers that aren't so common at all.

And: Which element are the Rutherford and bohr models attempting to represent?

2007-02-21 10:33:31 · 5 answers · asked by Anonymous

can someone please help me with combinding ionic compounds and valence electrons etc.
im in Physical science 100 and im totally lost and my teacher won't do any ofter school help. so like
how do i make ionic compounds?
can you also tell me how to be able to know how many valance electrons an atom has?
another thing would be being able to find the ionic change of ions.
this is probably really confusing to what i just said, but if you could explain it and/or give me an easy-to-follow website that would help me out.
thanks a lot

2007-02-21 10:01:15 · 3 answers · asked by . 1

Can someo ne exsplain to me how to do this?? some exsamples of what i want to solve is!

carbon tetrachoride
----
copper(II)choride
---
mercury(II)iodide

2007-02-21 09:56:39 · 4 answers · asked by ♥ 2

Which of the following compounds can exist as cis and trans isomers ?

a) CHCl=CHCl
b) CH2=CH-CHCl2
c) ClBrCHCl
d) CHCl=CH-CH2Br
e) 3-hexene

2007-02-21 09:53:39 · 1 answers · asked by Anonymous

K2OAl2O36SiO2+(x)H2O --> Al2O32SiO22H2O

2007-02-21 09:51:16 · 1 answers · asked by Anonymous

please helppp

2007-02-21 09:27:34 · 2 answers · asked by this is me 2

2007-02-21 09:24:09 · 4 answers · asked by frickenawesomekoreanandyouknowit 2