Chemistry - March 2007

2007-03-19 04:29:32 · 6 answers · asked by JOK3R 1

1: Which of the following is not important when considering reaction rate?
a- Molecular geometry
b- Organic nature
c- Concentration
d- Temperature

2: Which equation accurately represents how its rate will proceed?
a- H + O→H2O
b- H2 + 2O2 →H2O
c- CH4 + O2 →CO2+ 2H2O
d- CH4 + 2O2 →CO2+ 2H2O

3: Rate = k [A]2 This reaction is a ____ ____ reaction.
a- 1st order
b- 2nd order
c- 1st generation
d- 2nd generation

4: Solve the following: ln e
10
-10
1
e

5: Solve the following: ln e0.36598
a-0.73196
b-0.36598
c-1
d-e

6: The form of the Arrhenius equation that allows chemists to understand how reactions are effected by temperature graphically is:
K = A e-Ea/RT
Y = mx + b
A = k / e-Ea/RT
ln k = ln A – Ea / R (1/T)

2007-03-19 04:10:26 · 5 answers · asked by coiledsnail 1

Can someone please tell me some properties of the element UUP? Namely chemical properties, and probable uses. I need it for a school project, thanks.

2007-03-19 04:07:38 · 3 answers · asked by BOO! 2

2007-03-19 03:41:08 · 4 answers · asked by thina a 1

2007-03-19 03:40:14 · 10 answers · asked by free lancer 3

if so or not please explain why.

2007-03-19 03:27:47 · 5 answers · asked by physicfreshman 1

My younger sister is in XI. She asks how to study it.
Please answer well. If you dont know please keep quiet. DONT ANSWER RUBBISH.

2007-03-19 03:13:41 · 6 answers · asked by Abi 1

2007-03-19 03:08:03 · 3 answers · asked by Anonymous

Number of moles = mass/mr
I remember something about this.

2007-03-19 02:53:37 · 1 answers · asked by David L 1

Well the AP exam is coming, and I would appreciate it if someone could help walk me through this question. I have an answer, but I ma not sure if it is correct.

A certain gas in a 2.75L container has a pressure of 875mm Hg at 25 degrees C. What will be the final temp of the sample if it is placed in a 750 mL container under 1.50 atm pressure?

2007-03-19 02:50:57 · 3 answers · asked by bosox1989 1

here are some examples:

HEXENE C6H12
CH2=CH-CH2-CH2-CH2-CH3
1 - HEXENE

CH3-CH=CH-CH2-CH2-CH3
2 - HEXENE

CH3-CH2-CH=CH-CH2-CH3
3 - HEXENE


CH2=C-CH2-CH2-CH3
-CH3
2 METHYL 2 PENTENE

HOW DO YOU NAME THESE ALKENES?
SURE I HAVE THEIR NAMES BUT HOW DID MY TEACHER GET THESE NAME?
WHAT ARE THE RULES,STEPS TO GET THE NAMES OF THE ALKENES?

2007-03-19 02:22:06 · 4 answers · asked by numbah1 1

what happens when you place electrodes into copper sulphate and connect it to a power supply ??
what is the pink deposti that forms on the anode ????

x x x

2007-03-19 02:10:19 · 2 answers · asked by i-duno bout-much-stuf!-xcept-dis 2

I know this sound abit lame...
you see NaOH = Sodium hydroxide by looking this formant and the element table can you tell the if this is a acid or basic? I'm not very sure?

it is basic solution.
If you really don't know the NaOH solution?

other then that how can we determine H+ Cl−
acid or basic solution abort the + & -?

2 more question
why basic solution eat glass and it doesn't eat plastic?
Why Acid solution eat plastic/rubber and it doesn't eat glass?

2007-03-19 01:42:52 · 2 answers · asked by Hua Cu P 1

2007-03-19 01:25:47 · 1 answers · asked by SNIKT. 3

i asked a similar quesiton to this....i tried solving it on my own but im not sure if its right
i got 6.130 as the answer.

2007-03-19 01:07:07 · 1 answers · asked by Anonymous

2007-03-19 00:58:11 · 3 answers · asked by Anonymous

I wanted to do this as a science experiemnt with my students and could not find it as an experiement anywhere.

2007-03-19 00:22:16 · 6 answers · asked by teach 1

...for determining the relative density or specific GRAVITY OF LIQUIDS? What is this scientific instrument?

2007-03-19 00:17:50 · 5 answers · asked by shanekeavy 5

2007-03-19 00:15:14 · 9 answers · asked by kingagard 1

2007-03-19 00:09:56 · 9 answers · asked by kingagard 1

2007-03-19 00:07:53 · 2 answers · asked by Anonymous

2007-03-19 00:07:50 · 11 answers · asked by Anonymous

2007-03-19 00:06:35 · 8 answers · asked by Anonymous

2007-03-19 00:03:34 · 4 answers · asked by Devona T 1

2007-03-18 23:47:08 · 3 answers · asked by amano_jaku05 1

How exactly does a flame work in its chemical composition and its reacting with the surrounding air (probably oxygen) and its creating light energy and heat energy etc.? Its just something i've been curious about but haven't ever really investigated.

2007-03-18 23:30:35 · 2 answers · asked by aleesha j 2

2007-03-18 23:27:50 · 4 answers · asked by Hari K 2

When temperature increases, the energy of electrons increases. The molecules' energy also increases too. So during heating, heat energy is used to increase eletrons' movement and to increase molecules' collision. Is that what I say right?

And where does the energy of electrons come from?

2007-03-18 23:20:50 · 3 answers · asked by Anonymous

Your answer will be yes or no

2007-03-18 23:12:11 · 4 answers · asked by amano_jaku05 1

On a bunsen burner does a blue or yellow flame make a noise if one is which one?? thx

2007-03-18 23:06:23 · 3 answers · asked by Anonymous