Chemistry - November 2006

seawater is approximately 4.0 % by mass dissolved ions. about 85% of the mass of the dissolved ions is from NaCl.
a) calculate the mass percent of NaCl in seawter.
b) calculate the mass percent of Na+ ions and of Cl- ions in seawater.
c) calculate the molarity of NaCl in seawater at 15 Celcius degree ( d of seawater at 15 *C = 1.035 g/ml)

2006-11-03 06:53:37 · 3 answers · asked by azncrazygurl520 1

i am doing a project on potassium sorbate so i am trying to find out as much as possible

2006-11-03 06:43:51 · 2 answers · asked by martin s 2

If .740 g of O3 reacts with .670g of NO, how many grams of NO2 will be produced? Which compound is the limiting reagent? Calculate the number of moles of the excess reagent remaining at the end of the reaction.



This one took me a while...Like almost 35 minutes. I couldnt get it together. It still has my brain in an bundle!

2006-11-03 06:40:35 · 2 answers · asked by nst 1

i want asummery about it...like its definition.. if it caused diseases..what about this diseases...thanks...

2006-11-03 06:40:17 · 3 answers · asked by Anonymous

is the limiting reagent. Calculate also the number of moles of NO2 produced.

Let's See What you get....This time around. Chem Lovers

2006-11-03 06:34:23 · 3 answers · asked by nst 1

2006-11-03 06:32:18 · 3 answers · asked by castille_g 2

chemical formula is KPO4

2006-11-03 06:12:34 · 4 answers · asked by blackhawkhalo 2

1. trans-1-bromo-2-methyl cyclohexane + sodium tert-butoxide in tert-butanol with heat

2. cis-1-bromo-2-methyl cyclohexane + sodium tert-butoxide in tert-butanol with heat

2006-11-03 05:58:32 · 2 answers · asked by afchica101 1

the chemical formula is TiO

2006-11-03 05:56:47 · 2 answers · asked by blackhawkhalo 2

Hi!!!

Does anyone know of an interesting inorganic topic I should write about?

2006-11-03 05:54:08 · 2 answers · asked by Anonymous

2006-11-03 05:40:03 · 4 answers · asked by rambabu d 1

Please no long detailed answers.

2006-11-03 05:13:47 · 3 answers · asked by NYC BOY! 1

I know it can eat through various substances, but what substances can be used to create containers it can't eat through?

2006-11-03 05:13:18 · 1 answers · asked by Anonymous

Tap water contains small amount of calcium hydrogen carbonate. Why does ir produce "scale" when heated? What is the chemical composition of "scale"?

2006-11-03 03:51:11 · 6 answers · asked by Max Camer 1

2006-11-03 03:48:53 · 6 answers · asked by Max Camer 1

2006-11-03 03:45:50 · 17 answers · asked by Bella Donna 5

2006-11-03 03:44:23 · 9 answers · asked by grinch702 1

I figured it out. See what ou get...You chemistry Lovers!

2006-11-03 03:43:45 · 5 answers · asked by nst 1

1.) 1st 2 quantom numbers (n,l) of the highest energy e- in the ground state of Sc^3+ are 3,1..true or false

my work is: Sc = [AR] 4s2 3d1 so ..
Sc^3+ = [AR] 3p6

how is it equal to 3,1?

2.) I don't understand the difference between ground and excited states. All i know is that when an e- gets excited, it moves to a higher (excited state).

if the e- config for Cr = 1s2 2s2 2p6 3s2 3p6 4s2 3d4..what would the excited state be?

2006-11-03 03:41:45 · 2 answers · asked by Julio 4

2006-11-03 03:38:44 · 3 answers · asked by Jenni 2

Apart from titrating against Potassium Permanganate and titrating against Sodium Thiosulfate. Are there any other procedures that can be carried out to determine the concentration of a sample of Hydrogen Peroxide?

2006-11-03 02:20:55 · 7 answers · asked by Stevie B 2

2006-11-03 02:18:33 · 5 answers · asked by adam v 1

2006-11-03 02:17:19 · 11 answers · asked by adam v 1

2006-11-03 02:14:02 · 1 answers · asked by adam v 1

2006-11-03 02:12:47 · 4 answers · asked by adam v 1

2006-11-03 02:05:49 · 14 answers · asked by a m 1

2006-11-03 02:00:58 · 2 answers · asked by jesusbuddy7 1

2006-11-03 01:53:56 · 4 answers · asked by edison yan 1

2006-11-03 01:52:28 · 7 answers · asked by edison yan 1

2006-11-03 01:40:06 · 2 answers · asked by Oreodad 1