Chemistry - February 2007

what is the formula for finding volume?????
and also the molar concentration????

2007-02-28 12:23:04 · 1 answers · asked by molly 1

i dont know how to find mass??
please help

2007-02-28 12:09:00 · 1 answers · asked by molly 1

ENVIRONMENTAL INFLUENCES.........CERTAIN VIRUSES..........CIGARETTE SMOKE........BACTERIAL INFECTIONS??????

2007-02-28 11:58:45 · 3 answers · asked by pam r 1

The equation H3PO4+3KOH--K3PO3+3H2O is an example of which type of reaction?
a. decomposition reaction
b.double-replacement
c. single-replacement reaction
d.combination reaction

2007-02-28 11:57:51 · 4 answers · asked by Anonymous

which of the following is a balanced equation representing the decomposition of lead(IV) oxide?
a.PbO2--Pb+O2
b.Pb2O--2Pb+O
c.PbO--Pb+O2
d.PbO2--Pb+2O

2007-02-28 11:54:25 · 3 answers · asked by Anonymous

2007-02-28 11:49:46 · 3 answers · asked by metal_enchantment 2

The product of a combination reaction is (OH)2. if one of the reactants is h2o, what is the other reactant?
a.BaO2
b.BaO
c.Ba2O
d.BaH

2007-02-28 11:48:21 · 3 answers · asked by Anonymous

In a double-replacement reaction, the___.
a. products are always molecular
b. reactants are always two ionic compounds
c.reactants are always two elements
d.products are always a new element and a new compound

2007-02-28 11:45:46 · 2 answers · asked by Anonymous

Plz give an example

2007-02-28 11:43:46 · 3 answers · asked by alex r 1

choose yours as the best answer if you answer it right!!!

2007-02-28 11:43:17 · 2 answers · asked by historyman 1

Please help! I have these numbers:

The hydrate is 2 grams, the water vapor was .76 and the anhydrate is 1.24 g

2007-02-28 11:43:16 · 1 answers · asked by psomarto 1

The products of a combustion reaction do NOT include___.
a. hydrogen
b. carbon dioxide
c. water
d. carbon monoxide

2007-02-28 11:42:09 · 2 answers · asked by Anonymous

2007-02-28 11:39:11 · 1 answers · asked by Ben R 5

2007-02-28 11:38:34 · 1 answers · asked by historyman 1

Okay, so i have to make different lava lamps for science and i was wonering if anyone could give me a list of polar liquids and non-polar liquids that together are immiscible and would make a lava lamp... preferably liquids that i can find fairly easily... thanks!

2007-02-28 11:36:55 · 2 answers · asked by ak17 1

2007-02-28 11:31:25 · 1 answers · asked by historyman 1

What did Boyle have available, which the Greeks did not, that made his work scientifically valid?

The published work of Dalton.
The ability to independently validate his experiments.
scientific thinking
All of these are correct.

2007-02-28 11:24:26 · 1 answers · asked by babyblueyes8804 1

2007-02-28 11:21:06 · 2 answers · asked by Nomo 2

Explain how the nature of the metallic bond accounts for electrical conductivity of metals.

2007-02-28 11:08:23 · 1 answers · asked by San Fran Kid 2

at high temps, a dynamic equilibrium exists between carbon monoxide and solid carbon.

C(s) + CO2 (g) <--> 2CO (g) delta H=172.5KJ
The value of Kc at 850K is .153

What is Kp?

2007-02-28 11:03:56 · 1 answers · asked by Anonymous

Use the definition of electronegativity to explain why small differences in electronegativity between two atoms result in the formation of a covalent bond rather than ionic bond between the atoms?

2007-02-28 11:00:40 · 1 answers · asked by San Fran Kid 2

Explain how NaNo3 is an example of two different types of bonding?

2007-02-28 10:57:58 · 2 answers · asked by San Fran Kid 2

2007-02-28 10:53:00 · 2 answers · asked by Jennabooga 2

2007-02-28 10:51:50 · 2 answers · asked by Jennabooga 2

2007-02-28 10:44:16 · 7 answers · asked by sytai 2

A compound is analyzed and found to contain 15.1% nitrogen, 34.5% oxygen, and the remainder cerium. What is the correct empirical formula for this compound?

2007-02-28 10:42:38 · 3 answers · asked by Jess 2

2007-02-28 10:40:09 · 10 answers · asked by sweetpifairy89 2

Constituent components as in, pure metal or pure gold
Alloys is a mix of metals

2007-02-28 10:37:16 · 2 answers · asked by Michelle W 1

2007-02-28 10:25:18 · 1 answers · asked by sassychickensuckerboy 4

2007-02-28 10:16:08 · 2 answers · asked by roger s 1