Chemistry - October 2006

Determine the number of water molecules necessary to balance the reduction half reaction of MnO4 ---> MnO2 that occurs in acidic solution.

2006-10-30 16:42:50 · 2 answers · asked by Erin H 1

the corrected pressure of H2 gas?

2006-10-30 16:22:50 · 1 answers · asked by Ria 1

The water in pool or lake are non conductive materials to electricity.

2006-10-30 15:39:38 · 9 answers · asked by Faris A 1

2006-10-30 15:31:59 · 3 answers · asked by srinivas r 1

2006-10-30 15:31:16 · 5 answers · asked by Carmen F 1

2006-10-30 15:12:50 · 2 answers · asked by Anonymous

how to calculate the order and rate constant of saponification of ethylacetate

2006-10-30 15:09:46 · 1 answers · asked by SURESH K 1

It is a word used in our book but not fully defined and I need to know. Thanks for any help!!

2006-10-30 15:07:32 · 0 answers · asked by ladynamedjane 5

name of inventor and what time period

2006-10-30 14:58:25 · 3 answers · asked by pam m 1

what are the rules for finding which direction the equalibrium lies in a chemical equation

2006-10-30 14:34:04 · 1 answers · asked by Tina the llama 2

a)SiCl4
b)SO3
c)F2
d)BBrF2

2006-10-30 14:18:32 · 1 answers · asked by Anonymous

2006-10-30 14:10:05 · 4 answers · asked by pete 1

Explain why terminal alkenes and alkynes (ie. 1-pentene and 1-pentyne) are easier to synthesize in high yield via elimination reactions than internal alkenes and alkynes (ie. 2-pentene and 2-pentyne)

2006-10-30 14:07:34 · 1 answers · asked by afchica101 1

If the nucleus of an atom has only positively charged protons and neutral neutrons, and like charges repel.... what holds the atom together?

Sue

2006-10-30 13:57:20 · 5 answers · asked by newbiegranny 5

2006-10-30 13:56:40 · 2 answers · asked by htt_erick 1

2006-10-30 13:42:02 · 1 answers · asked by hundredaire 4

Lithium forms a gaseous molecule with hydrogen, LiH. The bond length is 159 pm and the dipole moment is 5.884 D. What is the extent of electron transfer from Li to H in LiH? Compare the answer to that for LiF (µ = 3.326 D, bond length= 156 pm).
LiH

LiF

2006-10-30 13:34:47 · 1 answers · asked by Anonymous

2006-10-30 13:26:33 · 8 answers · asked by sunoje2000 2

2006-10-30 13:21:02 · 4 answers · asked by she_ra371602004 1

Find the pH and volume (mL) of 0.0372 M NaOH needed to reach the equivalence point(s) in titrations of the following.

(a) 47.2 mL of 0.0526 M CH3COOH

(b) 17.6 mL of 0.0858 M H2SO3 (two equivalence points)

2006-10-30 13:19:17 · 1 answers · asked by buttrefly007 1

2006-10-30 13:14:59 · 7 answers · asked by ilovemydogcuddles 1

I know the answer but don't know how to work it... here goes...

Gaseous argon has a density of 1.40 g/L at standard conditions. How many argon atoms are in 1.00 L of argon at standard conditions?

Should the answer be 2.1*10 to the 22nd power?

2006-10-30 13:10:55 · 3 answers · asked by ink_spell_020 1

For example I need to figure the rest of these equations out:

Na2CO3(aq) + HCl(aq) --->

Na2SO4(aq) + BaCl2(aq)

NaCl(aq)+ AgNO3(aq)

NH4Cl(aq) + NaOH(aq)

Ag+(aq) + Cl-

2006-10-30 13:04:14 · 3 answers · asked by Brittany W 1

2006-10-30 13:00:27 · 1 answers · asked by ... 1

2006-10-30 12:59:29 · 13 answers · asked by chet4pizza 1

I am doing PJAS. I need to research yeast. Problem is, none of all of the books in the science room have anything about yeast. I need to know how exactly it reproduces, what (natrual) conditions are the most favorable for yeast to flourish, and what sugar it reacts the best to (in making it grow.)

All and (most) any answers are appreciated.

2006-10-30 12:50:15 · 5 answers · asked by Anonymous

itz science related

2006-10-30 12:47:27 · 3 answers · asked by kintz2010 1

I need to know this for a chemistry project, please reply as soon as possible!!!

2006-10-30 12:38:43 · 2 answers · asked by Anonymous

This is for my Biochemistry of Macromolecules Lab.....
For determining enzyme concentration (umole/min) for M1, P1, P2, and S2 using the fact that 9OD=1 umole, does these calculations seem reasonable.
The OD's are: M1=.888, P1=.352, P2=.473, and S2= .034
I divided the OD's by nine to yield the umole units and then multiplied by the dilution factor 50 (20:1000) and .020 ml (amount of enzyme used)
To calculate the total units I multiplied the enzyme units by the volume in ml's from the protein assay from the previous week (it is total volume of the M1-S2).
To calculate the specific activity I divided the enzyme concentration by the protein concentration.
To calculate the purification factor, I divided the final specific activity by the initial specific activity and for the % yield of protein and enzyme I simply divided the final total units by the initial total units and multiplied by 100.......
HAS ANYONE DONE THIS BEFORE.....DOES THE CALCULATIONS SOUND RIGHT?????

2006-10-30 12:29:47 · 3 answers · asked by Anonymous

2006-10-30 12:25:03 · 1 answers · asked by anonymous91 1