Chemistry - January 2007

You have to find the element the clue talked about, For example, A metal found in your blood, answer, Iron. The clues are, What do you use to press a shirt, what is the motto for a well digging company, policeman (some clues, I don't understand, remember, the element for each clue), A Lone Ranger's horse, and a cowboy's cry after riding a bronco, "I... , 2000 lbs casket, the leg joint above the calf, and also explain why

2007-01-21 14:46:06 · 4 answers · asked by Anonymous

What does the zinc begin to look like over a period of time? (after 30 minutes or so)?

2007-01-21 14:36:48 · 3 answers · asked by Anonymous

2007-01-21 14:25:44 · 3 answers · asked by Lena A 1

Base you answer on its geometrical shape,or its bond type, or its molecular polarity or its electrondot structure

2007-01-21 14:23:23 · 2 answers · asked by Lena A 1

2007-01-21 14:21:16 · 2 answers · asked by john m 1

please help

2007-01-21 14:15:34 · 4 answers · asked by rabbityfeet 1

a 100-watt light bulb is left on for 14hours. how many joules of energy are used? with electricity at $0.09 per kwh, how much does it cost to leave the light on for 14 h?

2007-01-21 14:01:23 · 3 answers · asked by Christie 1

2-butene
1-butene
2-methyl-2-butene
3-hexene

also, how can i draw the structural formulas?

2007-01-21 13:59:06 · 2 answers · asked by Ciavana 3

2007-01-21 13:58:12 · 4 answers · asked by curly fries 1

2 K + Cl2 ===> 2 KCl

from 1.00g of Cl2 and excess K?
how do you solve this equation?

2007-01-21 13:56:37 · 2 answers · asked by J.r. 3

A sample of 9.00 g of aluminum metal is added to an excess of hydrochloric acid.

2007-01-21 13:43:56 · 3 answers · asked by tortuga_gp08 1

2007-01-21 13:42:45 · 3 answers · asked by ellen105 2

I think I liked Chemistry but then again Bio wasn't that bad...

2007-01-21 13:42:07 · 14 answers · asked by kimbo 1

oadrhgliaerhrtjuyksyj

2007-01-21 13:39:49 · 8 answers · asked by curly fries 1

The density of an unknown gas is 4.20 grams per liter at 3.00 atmospheres pressure and 127 degrees celsius.
R=0.0821 L atm mole-1 K-1

2007-01-21 13:39:28 · 3 answers · asked by tortuga_gp08 1

Like Alka-Seltzer

2007-01-21 13:18:35 · 5 answers · asked by fwc95 1

out of Na, Ar, As, or Rb

2007-01-21 13:16:43 · 6 answers · asked by J_B_BaLlin 3

What are the 3 types of Solubiltity Problems?

2007-01-21 13:10:50 · 3 answers · asked by Anonymous

You have to find the element the clue talked about, For example, A metal found in your blood, answer, Iron. The clues are, What do you use to press a shirt, what is the motto for a well digging company, policeman (some clues, I don't understand, remember, the element for each clue), A Lone Ranger's horse, and a cowboy's cry after riding a bronco, "I...

2007-01-21 13:07:43 · 2 answers · asked by Anonymous

I have contridicting informaiton that to truly mark a product up you divide rather than add...i.e to mark up 100.00 you simply multiply .10. Or do you divide using .90?

2007-01-21 13:03:25 · 2 answers · asked by redbull07 2

2007-01-21 12:54:30 · 4 answers · asked by Anonymous

1. One Chemical property of matter is:
a) boiling point; b) texture; c) reactivity; d) density
2. A line spectrum is produced when an electron moves from one energy level:
a) To a higher engery level; b) to a lower energy level; c) into the nucleus; d) into another position in the same sublevel
3. In a molecule of fluorine, the two shared electrons give each fluorine atom _________ electron(s) in the outer energy level.
a) 1; b) 2; c) 8; d) 32
4. When potassium reacts with water, one product formed is:
a) hydrogen gas; b) oxygen gas; c) potassium oxide; d) salt

Thank you for whoever helps.

2007-01-21 12:47:14 · 3 answers · asked by Allahu_Akbar 3

This is my equation-NaHCO3+HCl ----> NaCl +H2O+CO2
Sodium hydrogen carbonte -3.00 grams
Sodium chloride - 1.15 grams
1)how do u calculate the number of moles for these masses and find the % yield
2)what is the balanced equation of calcium carbonate and hydrochloric acid
please help me to do this .....really appreciate any help
THANK YOU !!!

2007-01-21 12:41:00 · 1 answers · asked by guddi_bhalodia 2

Assume all gases are measured at 0 degrees Celsius and 1 atm

2007-01-21 12:26:24 · 5 answers · asked by tortuga_gp08 1

How would the number of particles of two gases compare if their partial pressures in a container were identical??

2007-01-21 12:24:59 · 1 answers · asked by alli p 1

A solution contains 5.36 g of an unknown electrolyte. If 50.0 mL of water was used to make the solution, and if the solution freezes at -5.35°C, calculate the molecular weight of the compound and identify the unknown. Assume that the unknown is formed by elements from groups IA and VIIA.

2007-01-21 12:24:19 · 1 answers · asked by feelinglikeastar 2

2007-01-21 12:23:23 · 2 answers · asked by Anonymous

2007-01-21 12:20:14 · 4 answers · asked by Nina T 1

because i have a zippo but it doesnt have fluid and i dont have lighter fluid for it

2007-01-21 12:19:24 · 4 answers · asked by Anonymous

Does sodium attract or release electrons? How many electrons are involved in the transfer?

2007-01-21 12:17:21 · 5 answers · asked by Anonymous