Chemistry - October 2006

and could someone explain to me how they got that? I just don't seem to be getting chemistry right now!

2006-10-22 18:42:36 · 5 answers · asked by el debbo 1

a) Calculate pH of solution before any base addition
b) calculate the pH after 18.39 mL addition of NaOH
c) Calculate the pH half way to the equivalence point
d) Calculate the pH at the equivalence point
e) Calculate the pH 0.68 mL after the equivalence point

2006-10-22 18:33:44 · 2 answers · asked by Dastfreadsv 2

2006-10-22 18:26:48 · 3 answers · asked by Dastfreadsv 2

the average distance from venus to earth is 28 million miles and 1 mile equals 1.6 km.

2006-10-22 18:15:03 · 2 answers · asked by Anonymous

Does anyone know what 170 cesius is in kelvins?? I really need some help on this.

2006-10-22 17:56:40 · 7 answers · asked by Anonymous

2006-10-22 17:19:54 · 2 answers · asked by Kriztine96 1

2006-10-22 16:47:24 · 5 answers · asked by Pat 2

2006-10-22 16:26:16 · 9 answers · asked by Anonymous

science

2006-10-22 16:11:02 · 5 answers · asked by Anonymous

A Japanese clothing company has recently started selling clothing in the USA that they claim produces negative ions. During the presentation people who wore the clothing claimed to have benefited with improved health and actual healings of various aliments. The clothing is supposed to generate negative ions when worn. They say negative ions in clothes are more easily absorbed through the skin rather than conventional ion generators. I bought several items of the clothing. One of my friends bought the clothing and is now claiming to have benefited healthwise from wearing it. As for me I haven't noticed any improvements in my health. My question to you is, is it possible for clothing to generate enough negative ions to have any positive affects on the body? If you would like to know more about this clothing and see photos of what I bought, please email me and I will show you. I'm not conveinced this clothing does what the company says it does. But some people swear it works for them.

2006-10-22 16:04:27 · 4 answers · asked by MAC4Me 3

Hello does anyone know how much Zirconium costs per gram? Leave reference please. Thanks

2006-10-22 16:01:51 · 2 answers · asked by Anonymous

SO2, HCI, CI2, HF, and H2S .......................all of these in a gas form. Im looking for common names.

2006-10-22 15:41:38 · 10 answers · asked by Anonymous

A sample of calcium metal with a mass of 2.00 was reacted with excess oxygen the following equation represent the reaction 2Ca+O2-->2CaO
the isolated product weighed 2.26g what was the percentage yield of the reaction

2006-10-22 15:01:22 · 4 answers · asked by coolpuffin 2

Oxygen gas i sconfined in a chmaber under water and bubbles out through a tiny orifice. It takes 62.5 seconds for the 20.0 mL of oxygen to effuse out of the chamber. Another gas of unknown molecular weight takes 35.5 seconds for 15.0 mL to effuse out of the same chamber at the same temperature and pressure. What is the molecular mass of this gas?

2006-10-22 14:40:15 · 1 answers · asked by Aaron S 1

What volume of 3.25M HNO(3) solution should be mixed with 50.0mL of 6.00M HNO(3) solution in order to form a 4.50M solution of HNO(3)?

2006-10-22 14:32:53 · 1 answers · asked by Aaron S 1

Water doesn’t have a constant density at all temperatures. At low temperatures, the density is low. The molecules don’t move much at low temperatures. At room temperature, the molecules are able to move. The density is 1.000g/cm3. At high temperatures, the molecules move quickly and freely. This causes the density to be high.

2006-10-22 14:17:59 · 6 answers · asked by aSnxbByx113 2

2006-10-22 13:48:12 · 5 answers · asked by LaKira B 1

i need a 30% consentration of hydrogen peroxide but i only can get it in a 6% consentration how do i go about uping the consentrationit in a simple way

2006-10-22 13:47:29 · 3 answers · asked by hello 1

2006-10-22 13:38:39 · 3 answers · asked by jyoti b 1

2006-10-22 13:13:14 · 4 answers · asked by Anonymous

if 3.6 grams of of magnesium is used in the above reaction determine the mass of water needed for the reaction give detail explaining how u know how to do this so i can do it myself

2006-10-22 13:07:02 · 8 answers · asked by lewis j 1

2006-10-22 12:59:06 · 4 answers · asked by Joey B 2

give reason for your answer

2006-10-22 12:47:18 · 11 answers · asked by lewis j 1

first molar ionization ethalpy
effevtive nuclear charge
electronegativity

2006-10-22 12:45:04 · 3 answers · asked by lewis j 1

A. 7.0 L
B. 11 L
C. 14 L
D. 21

2006-10-22 12:31:28 · 2 answers · asked by Aurora C 1

At least five different products?

2006-10-22 12:15:24 · 2 answers · asked by *Sweetie* 3

2006-10-22 12:00:29 · 2 answers · asked by mintai2003 2

I'm on the last question for my homework and I don't get how to do it, here it is...

An unknown element named Renegadium (Rg) consists of four isotopes Rg (A) mass # 281, Rg (B) mass # 282, Rg (C) mass # 283, Rg (D) mass #284. Isotope C has a percentage abundance of 2.00%. Isotopes A and D have the same percentage abundance. Calculate the percent abundance of A, B and D.

2006-10-22 11:54:10 · 3 answers · asked by Silentspeedster 2

2006-10-22 11:50:05 · 2 answers · asked by bam4ever13 1

The experiment involves testing the ph levels.
I need two differnt temperatures.

2006-10-22 11:48:57 · 1 answers · asked by sweetcheeks 1