Chemistry - November 2006

Are there any pure elements in the body? and if so what are they?

2006-11-26 11:26:35 · 5 answers · asked by Anonymous

acid. What is the concentration of the base?

a) 0.00170 N
b) 0.150 N
c) 0.148 N
d) 0.0702 N

2006-11-26 11:26:21 · 1 answers · asked by Chasity 1

C O

C H2 Cl2

2006-11-26 11:14:34 · 4 answers · asked by The Question Man 2

What is the balanced equation for Hexane burning completely in Oxygen?

2006-11-26 11:11:07 · 6 answers · asked by Stevie B 2

If we ran out of oxygen, what element would be the closest to the same thing?

2006-11-26 11:10:33 · 4 answers · asked by Knee 6

2006-11-26 11:05:15 · 2 answers · asked by lovely_antionette 1

Silver has two isotopes 107/47Ag has a mass of 106.905amu (52.00%), and 109/47Ag has a mass of 108.905amu (48.00%). What is the mass of silver

2006-11-26 11:02:51 · 5 answers · asked by lovejessyloot 1

2006-11-26 11:02:14 · 1 answers · asked by t-man foshizzle 2

2006-11-26 10:25:49 · 7 answers · asked by balwinder s 1

2006-11-26 10:22:17 · 5 answers · asked by balwinder s 1

2006-11-26 09:59:12 · 4 answers · asked by STAN 3

2006-11-26 09:54:06 · 5 answers · asked by Anonymous

a) galactose
b) fructose
c) ribose
d) glucose

2006-11-26 09:52:04 · 3 answers · asked by Betty 1

2006-11-26 09:37:46 · 5 answers · asked by coyoteugly60914 1

explain why a syatematic method of naming chemical compounds is necessary?

2006-11-26 09:29:44 · 3 answers · asked by Anonymous

a are either alpha hydroxy ketones or alpha hyrdoxy aldehydes
b can react in their cyclic or closed ring forms with Tollen's reagent
c are used in weight reduction plans
d none of these

2006-11-26 09:28:20 · 2 answers · asked by Betty 1

im trying to fine the number of formula units there are in X grams of barium hydroxide

2006-11-26 09:20:29 · 1 answers · asked by Strong Safety # 18 1

A) H3 N(^+) CH2 CO2 H
B) H2 NCH2 CO2-
C) H3 N(^+) CH2 CO2-
D) H2 N CH2 CO2 H



94

2006-11-26 09:17:09 · 4 answers · asked by Michael 1

A) NH2 CH2 COO-
B) +NH3 CH2 COO-
C) +NH3 CH2 COOH
D) NH2 CH2 COOH


93

2006-11-26 09:09:43 · 7 answers · asked by Michael 1

this homework deals with additions to alkynes. provided are the links to the homework problems plus my answers. please be so kind as to check my answers. i appreciate it very much.

homework page 1:
http://img.villagephotos.com/p/2006-10/1223233/ochemhw10p1.JPG

page 2:
http://img.villagephotos.com/p/2006-10/1223233/ochemhw10p2.JPG

my answers:
1-D
2-B
3-A
4-C
5-B
6-D
7-D
8-C
9-A

2006-11-26 09:07:18 · 1 answers · asked by pilatesfreak 2

this is college chemistry. The molecules of PF5 and AsF5 exist, but the analogous molecule NF5 does not. Why not?
thanks for the help!

2006-11-26 09:07:14 · 7 answers · asked by Richard N 1

During action potential it's written in the text that potassium channels open and also the fast na+ channels i wnat to know if there are opened k+ channels opened in the resting potential or not>>>>>

2006-11-26 09:02:22 · 1 answers · asked by Mostafa O 2

i'm really stressed out about all this science fair hoo-blah and i need to know the chemical formula for thionin( if there is one). can anyone please help??!!

2006-11-26 09:00:02 · 1 answers · asked by musical_genius 3

2006-11-26 08:47:56 · 1 answers · asked by Un Known 1

2006-11-26 08:40:28 · 3 answers · asked by Anonymous

I am doing a science fair project on thionin, and i am in dire need of it. i would like to know if it can be store bought so that i can finish already.

2006-11-26 08:39:25 · 2 answers · asked by musical_genius 3

2006-11-26 08:33:25 · 7 answers · asked by bster_93 1

2006-11-26 08:30:41 · 5 answers · asked by bernardettek 2

2006-11-26 08:29:50 · 6 answers · asked by Anonymous

2006-11-26 08:16:32 · 3 answers · asked by Anonymous