Chemistry - February 2007

I am confused because it is a salt...

2007-02-25 15:24:55 · 2 answers · asked by Anonymous

2007-02-25 15:23:31 · 2 answers · asked by tmhuwm 1

Speed of light =frequency x wavelenght?

3.0x10^8/3.2x10^-6=9.4x10^-1

I think I have been studying too much, is that the correct answer/?

Thanks

2007-02-25 15:15:35 · 1 answers · asked by Boo Radley 4

Please can someone walk me through the steps in solving this mole calculations problem.

3.25 X 10^18 molecules SO2

2007-02-25 15:01:55 · 5 answers · asked by SUnny S 1

s.sweet= supra sweet

2007-02-25 14:51:46 · 4 answers · asked by Anonymous

The electron configuration is

1s^2, 2s^2, 2p^6, 3s^2, 3p^6

is that correct
what is it for K?

2007-02-25 14:51:33 · 3 answers · asked by Boo Radley 4

2007-02-25 14:47:01 · 2 answers · asked by Ray 2

A chunk of silver has a heat capacity of 42.8 J/C. If the silver has a mass of 181g, calculate the specific heat of silver.

2007-02-25 14:40:04 · 1 answers · asked by salvamag145 2

After addin LiF to an aqeous HF solution, KI to an aqueous HI solution, NaCLO4 to an aqueous NaOH solution, NH4CL to an aqueous NH3 solution does the pH increase, decrease or remain the same

2007-02-25 14:40:03 · 1 answers · asked by nik 1

2007-02-25 14:35:54 · 2 answers · asked by Anonymous

2007-02-25 14:27:53 · 4 answers · asked by Anonymous

2007-02-25 14:26:18 · 1 answers · asked by taintalizeme 1

ok thers magnesium sulfate + silver nitrate, thers nickel bromide + aluminum sulfate, another problem is calcium oxide + iron (lll) chloride, and finally mercury (l) nitrate + lithium chloride, please help me understand the reactions!

2007-02-25 14:25:44 · 1 answers · asked by kitty~princess 1

please help me, if possible show work., another is., aluminum burns, iron corrodes (iron(lll)) i know that when something burns u add O2 to that element.

2007-02-25 14:21:45 · 1 answers · asked by kitty~princess 1

how many atoms are represented in the formula CaCO3 (it's a small 3)
a. three
b. four
c. five
d. six

2007-02-25 14:16:53 · 6 answers · asked by jennifer 1

Tricalcium aluminate, an important component of Portland cement, is 44.4% calcium and 20.0% aluminum by mass. The remainder is oxygen.

2007-02-25 14:11:44 · 1 answers · asked by Anonymous

The varitaians in color are due to different..... atomic masses , molecular structures, ionization energies, or nuclear charges?

2007-02-25 14:08:56 · 3 answers · asked by Anonymous

1. A _________ is a shorthand notation the represents a compound or diatomic element.
a. coeffcient
b. chemical formula

2. which is the proper order for the first five prefixes used in chemical names?
a. mono-, tri-, di-, tetra-, penta-
b. uno-, di-, tri, quatro-, penta-
c. mono-, di-, tri- tetra, penta-
d. uno-, di-, tri-, tetra-, penta-

2007-02-25 14:03:33 · 6 answers · asked by jennifer 1

It may be simple for so many other people, but it is so hard for me. I find many other things in Chemistry like mole ratios and other stuff to be a breeze but balancing equations really mess with me.

Any suggestions on how to balance equations in a simpler way?

2007-02-25 13:59:58 · 4 answers · asked by Anonymous

is it 79 amu?

2007-02-25 13:57:45 · 1 answers · asked by Anonymous

2007-02-25 13:57:08 · 2 answers · asked by Clean Independent Energy 3

Two flexible containers for gases are at the same temperature an pressure. One holds 0.50 gram of Hydrogen and the other holds 8.0 grams of oxygen. Which of the following statements regarding these gas samples is false?

A.) The volume of the hydrogen container is the same as the volume of the oxygen container.
B.) The number of molecules in the hydrogen container is the same as the number of molecules in the oxygen container.
C.) The density of the hydrogen sample is less than that of the oxygen sample.
D.) The average kinetic energy of the hydrogen sample is the same as the average kinetic energy of the oxygen molecules.
E.) The average speed of the hydrogen molecules is that same as the average speed of the oxygen molecules.

2007-02-25 13:52:16 · 2 answers · asked by Anonymous

2007-02-25 13:51:47 · 2 answers · asked by Anonymous

I dont get this at all....Chem geek really helped

2007-02-25 13:44:19 · 1 answers · asked by Lauren G 1

2007-02-25 13:40:28 · 5 answers · asked by sxe 1

what's the difference between a phosphorylase and a kinase? or are they different names for the same class of proteins?

2007-02-25 13:36:00 · 3 answers · asked by need help! 3

chemical energy
mechanical energy
electrical energy
thermal energy

2007-02-25 13:28:51 · 4 answers · asked by sxe 1

Studying for Chemistry Test~!

1. Caculate the number of molecules present in 2.74 moles of CO2.
2.Caculate the mass ( in grams) of 3.34x10^23 molecules of H20
3.Caculate of number of moles present in 3.34x10^23 molecules of H20.

2007-02-25 13:28:20 · 2 answers · asked by Azumi 2

2007-02-25 13:21:57 · 1 answers · asked by Katrin 1

2007-02-25 12:48:50 · 6 answers · asked by Nadine M 1