Chemistry - June 2007

and how dangerous is it when used as a rooting hormone?

2007-06-21 13:56:00 · 1 answers · asked by Anonymous

2007-06-21 11:53:49 · 4 answers · asked by Anonymous

2007-06-21 11:35:39 · 3 answers · asked by big mike 2

2007-06-21 11:25:19 · 2 answers · asked by Anonymous

Please help.

2007-06-21 11:21:34 · 2 answers · asked by sillysalamander101 2

Can anyone tell me which of these substances are polar and which are nonpolar???

SOLVENTS:
water
ethanol (C2H5OH)
acetone ((CH3)2CO)
hexane (C6H14)
vegetable oil (CH3(CH2)7CH= CH(CH2)7COOH)
isopropyl alcohol (C3H7OH)


SOLUTES
citric acid (CH2(COOH)- COH(COOH)- CH2(COOH))
gelatin (protein)
glycerine (C3H5(OH)3)
glycine (NH2CH2COOH)
iodine (I2)
oleic acid (CH3(CH2)7CH= CH(CH2)7COOH)
sodium chloride
sucrose (C12H22O11)
Vaseline petroleum jelly (hydrocarbon mixture)
sodium bicarbonate (NaHCO3)
corn starch

2007-06-21 10:16:36 · 2 answers · asked by sillysalamander101 2

Which name is incorrect?
BBr- boron tribromide
CO2- carbon dioxide
Na2S- disodium sulfude
PCl5- phosphorus pentachloride
KCl- potassium chloride

The correct answer is Na2S, but I dont understand why it's the right answer. When I looked at this question it seemed like all of the answers were correct.

2007-06-21 09:58:12 · 3 answers · asked by JMEB 2

A student paid little attention to the size of his burner flame while heating a 0.979 g sample of CaC2O4*H2O. The final mass of the cooled solid was 0.670g.

A) was the reaction product anhydrous calcium oxalate? Briefly Explain

B) Assuming that the final product was pure, what was the final product? Explain.

2007-06-21 09:47:55 · 3 answers · asked by Anonymous

2007-06-21 08:46:02 · 2 answers · asked by Sweet_b-yatch 1

age for these rocks?

scientists can date rocks by measuring the amount of argon inside the rock grains. The argon is formed when patssium atoms decay.

2007-06-21 08:36:28 · 2 answers · asked by helen 1

Determination of water hardness

2007-06-21 08:28:24 · 1 answers · asked by Anonymous

I cleaned my windows and part of the wall with rubbing alcohol + windex after being attacked by many flies... So when the rubbing alcohol evaporates. Will the surface be flamable after everything has dried?

2007-06-21 08:19:00 · 6 answers · asked by Anonymous

MnO2+ 4H3O+ -----> Mn2+ + Cl2 + 6H2O

In the reaction of Manganese (IV) oxide with chloride ion, determine which species is the oxidizing agent and which is the reducing agent.

Please give a short explanation as though you were talking to a 5 year old.

Thanks

2007-06-21 08:00:02 · 6 answers · asked by gym guy 2

Al + O2 -------------------->
Ca + Cl2 -------------------->

2007-06-21 07:59:32 · 2 answers · asked by wonderwoman 1

2007-06-21 07:59:15 · 3 answers · asked by bob b 2

2007-06-21 07:54:43 · 2 answers · asked by Anonymous

2
1 x 10^2
12
-2

2007-06-21 07:51:17 · 2 answers · asked by Trent J 1

OH- and OH+
H30+ and H20
OH- and H+
OH+ and H-

2007-06-21 07:50:01 · 2 answers · asked by Trent J 1

My Chemistry worksheet looks like this...

Al + Fe2O3 -------------------->
Zn + NaBr -------------------->
Cs + H2SO4 -------------------->
Al + SiC -------------------->
Fe + Na2SO4 -------------------->
Ca + HNO3 -------------------->

Does anyone know what my instructor is wanting me to do with this? The beginning of the worsksheet was balancing reactions, but there are no instructions for this.

2007-06-21 07:45:25 · 4 answers · asked by wonderwoman 1

i need it for maths but i need it in the simplest form

2007-06-21 06:40:36 · 13 answers · asked by Pinkforeva 1

2007-06-21 06:15:28 · 6 answers · asked by Anonymous

2007-06-21 05:53:42 · 18 answers · asked by Anonymous

how much energy would it take to remove a single electron from the surface of the metal?

a) 7.25 X 10^ -19 J
b) 1.45 X 10^ -18 J
c) 6.90 X 10^ 17 J
d) 3.53 X 10^ -18 J
e)1.45 X 10^ -21 J

2007-06-21 05:46:54 · 4 answers · asked by Anonymous

something to do with explosive levels of gases

2007-06-21 05:35:47 · 4 answers · asked by becky b 1

2007-06-21 05:33:24 · 2 answers · asked by Anonymous

A) Chloride ion
B) Chlorite ion
C) Chlorate ion
D) Perchlorate ion
E) Hypochlorite ion

2007-06-21 05:22:22 · 7 answers · asked by SICK MY DUCK! 1

A) B2H6
B) CH3OH
C) LiNO3
D) Sc2O3
E) CsBr
F) NOCl
G) NF3
H) Ag2SO4

2007-06-21 05:20:21 · 6 answers · asked by SICK MY DUCK! 1

Which of the following quantum number sets, {n, l, ml}, could describe a two lobed dumb-bell shaped orbital?

a. {1,0,0}
b. {5,1,1}
c. {3,0,1}
d. {3,2,-1}
e. {4,3,-1}

2007-06-21 05:16:05 · 5 answers · asked by Anonymous

Balance

(a) C2H4 (g) + (b) O2(g) --> (c) CO2 (g) + (d) H2O (l)

2007-06-21 05:14:58 · 2 answers · asked by Anonymous

H-O
H-N
H-Cl

Please simplify it, this is all new to me.
Thank you

2007-06-21 05:14:37 · 2 answers · asked by Kerri L B 1