Chemistry - August 2006

A rose colored mineral specimen is given to you for identification. It has a conchoidal fracture, no streak, and a non-metallic luster. It has can be scratched with a steel file, but not with glass or a pocketknife blade. It has no streak. Its mass is 53 grams. you place it in water and it displaces a volume of 20 cubic centimeters of water.
A - What is the hardness of this mineral.? PLEASE Explain.
B - What is the specific gravity of this mineral?
C - Please Identify this mineral.

2006-08-11 09:46:03 · 6 answers · asked by Anonymous

2006-08-11 09:18:45 · 3 answers · asked by Isha 2

Why scandium is not a transition metal?Give answer with explaination.

2006-08-11 08:26:26 · 6 answers · asked by star123 2

definition of Ionization energy is;
"The ionization energy is the minimum energy required to remove an electron from the ground state of the isolated gaseous atom"
My question is,in definition of ionization energy why " isolated gaseous atom" is used?

2006-08-11 08:20:36 · 4 answers · asked by star123 2

I Was Wondering If Dry Ice Was in an Ice Pack?

2006-08-11 07:49:57 · 12 answers · asked by Anonymous

http://en.wikipedia.org/wiki/Michaelis-Menten

refering to the above wikipedia article:

near the end, it states: k2[E0] = Vmax

can someone explain why? i know its kinda complicated, so much thanks in advance.

2006-08-11 07:39:31 · 2 answers · asked by Anonymous

2006-08-11 06:51:35 · 9 answers · asked by ? 2

2006-08-11 06:25:04 · 5 answers · asked by andreicnx 3

2006-08-11 06:13:06 · 9 answers · asked by moonman123 1

2006-08-11 05:41:38 · 8 answers · asked by Divya S 1

This is taken from my book:
2NaOH +Cl2 = NaCl+NaOCl+H2O

In my book,written that this is a disproportion reaction.
But i don't understand Why this is a disproportion reaction?
Please explain me.

2006-08-11 05:33:48 · 4 answers · asked by star123 2

In 3Na2CO3,Before Na2CO3 a number "3" remains.Here What does "3" represents?Also look,after Na, a number" 2 "remains.Here what does "2" represents?

2006-08-11 03:33:54 · 6 answers · asked by star123 2

2006-08-11 03:23:02 · 2 answers · asked by Utopia 4

2006-08-11 03:16:13 · 8 answers · asked by Anonymous

gee i did a mistake in asking question: it should be "the molecule name of hair" help me pliz 0_0

2006-08-11 02:55:01 · 5 answers · asked by **naDEshiKO** 2

illegal stuff like cocain, pot, and other things that grow on"farms" and in the wild? It would be helpful to use another source of something that is natural

2006-08-11 02:17:54 · 9 answers · asked by Anonymous

2006-08-11 02:08:41 · 11 answers · asked by maurice t 1

1.Tomato Sauce 2.Beer 3.Common Salt 4.Soil 5.Tin 6.Sugar 7.Magnesium Oxide 8.Water 9.Gold 10.Milk 11.Air
12.Nitrogen 13.Soup 14.Iodine 15.Alcohol 16.Calcium 17.Magnesium 18.Hydrogen 19.Sea Water 20.Chalk 21.Petrol
22.Copper Chloride 23.Lemonade 24.Blood

2006-08-11 02:05:44 · 5 answers · asked by maurice t 1

I'm interested in materials, chemicals and its effects and experimentals...
Please give me accurate answers and preferably you have a degree in biochemicals or something similar relates to that

2006-08-11 01:59:12 · 7 answers · asked by Anonymous

we have 20% aluminium chloride solution containing copper salt.i want to recover this copper salt

2006-08-11 01:07:24 · 3 answers · asked by gb 1

Hydrogen plus Oxygen makes water . but both are gases

let me know how liquid water is formed.

2006-08-11 00:51:21 · 8 answers · asked by Anonymous

In"2NaOH(Sodium hydroxide)",What is the oxidation number of
Na(sodium)?

2006-08-10 23:29:11 · 9 answers · asked by star123 2

various types of Spectroscopic techniques and Instruments.

2006-08-10 20:37:24 · 7 answers · asked by Kittu 2

2006-08-10 20:25:43 · 9 answers · asked by kat 2

2006-08-10 19:52:08 · 4 answers · asked by rikku_destiny2000 1

2006-08-10 18:53:32 · 6 answers · asked by Anonymous

2006-08-10 18:43:22 · 2 answers · asked by AlanMu 1

a metal with a yellow color?
a synthetic element used in smoke detectors?
a very rare alkali metal. it is radioactive?

2006-08-10 17:26:00 · 6 answers · asked by js_batres 2

2006-08-10 16:55:55 · 8 answers · asked by Anonymous

I am soo lost. Please help. Thanks guys.

2006-08-10 16:43:24 · 7 answers · asked by Have a nice day 1