Chemistry - June 2006

so it will not have a chemical interaction between the essential oil and the stainless-steel tank. because i want to use the tank (as a container) and mix the solution composing of citrus oil, menthol and a little bit of alcohol.

2006-06-13 07:01:16 · 4 answers · asked by hasachon w 1

2006-06-13 06:58:13 · 3 answers · asked by Anonymous

2006-06-13 06:56:38 · 7 answers · asked by Anonymous

2006-06-13 05:30:33 · 3 answers · asked by khushi 1

Consider a mixture of air and gasoline vapor in a cylinder with a piston. The original volume is 60. cm3. If the combustion of this mixture releases 830 J of energy, to what volume will the gases expand against a constant pressure of 670 torr if all the energy of combustion is converted into work to push back the piston?

2006-06-13 05:25:24 · 2 answers · asked by Anonymous

2006-06-13 05:07:16 · 2 answers · asked by Anonymous

Consider the dissolution of CaCl2.

CaCl2(s) --> Ca2+(aq) + 2 Cl-(aq) (Delta)H = -81.5 kJ

A 13.2 g sample of CaCl2 is dissolved in 119 g of water, with both substances at 25.0°C. Calculate the final temperature of the solution assuming no heat lost to the surroundings and assuming the solution has a specific heat capacity of 4.18 J/°Cg.

2006-06-13 05:00:19 · 2 answers · asked by Anonymous

Consider a mixture of air and gasoline vapor in a cylinder with a piston. The original volume is 30. cm3. If the combustion of this mixture releases 885 J of energy, to what volume will the gases expand against a constant pressure of 665 torr if all the energy of combustion is converted into work to push back the piston?

2006-06-13 04:58:54 · 2 answers · asked by Anonymous

A biology experiment requires the preparation of a water bath at 37.0°C (body temperature). The temperature of the cold tap water is 22.0°C, and the temperature of the hot tap water is 61.0°C. If a student starts with 70.0 g of cold water, what mass of hot water must be added to reach 37.0°C?

2006-06-13 04:58:15 · 1 answers · asked by Anonymous

2006-06-13 04:36:16 · 13 answers · asked by Anthony G 4

2006-06-13 04:27:40 · 1 answers · asked by Shannon 1

My friend was saying that diamond is a type of condensed coal,that is why we get diamonds from coal mines. is that true?

2006-06-13 04:10:19 · 15 answers · asked by nasha098 1

2006-06-13 04:00:32 · 7 answers · asked by amazing_sweet_angel 1

2006-06-13 03:59:40 · 7 answers · asked by amazing_sweet_angel 1

2006-06-13 03:57:58 · 2 answers · asked by amazing_sweet_angel 1

That's about it, trying to dreg up some information on the UV visible spectra of zeolites.

2006-06-13 03:34:58 · 1 answers · asked by madrhetoric333 1

2006-06-13 03:15:08 · 1 answers · asked by Dane M 1

2006-06-13 02:46:18 · 8 answers · asked by zsozso 4

2006-06-13 02:28:29 · 4 answers · asked by Anonymous

As much details as possible.

2006-06-13 01:59:10 · 6 answers · asked by Tina 6

can someone give me how to convert :

a) grams to mole
b) mole to molecules
c) mole to ideal gases

2006-06-13 01:57:45 · 11 answers · asked by farah_fauzi 3

i want to do a 2yrs pg chem in banglore send a list of
pharmaseutical
campus placement colleges

2006-06-12 23:40:01 · 2 answers · asked by Anonymous

2006-06-12 23:04:20 · 5 answers · asked by cool 1

Detail in the following
-wood presevation
-removing salts from artifacts
-restoring metals

2006-06-12 20:38:27 · 2 answers · asked by Jimmy 1

2006-06-12 19:25:52 · 4 answers · asked by Guy 1

ive heard amonia can be used to clean fish tanks ive also heard clear amonia works better problem is i have no idear were to get it from in queensland ive looked in pet stores plumers ect no one sells it i was told by one of the stores that the reason its not for sale is because people keep mixing it with costic materials and killing them selfs

2006-06-12 18:34:28 · 4 answers · asked by mrbisket 1

What are some roles of chemists in general industries?

2006-06-12 18:15:45 · 3 answers · asked by UllNevaGuess 1

2006-06-12 17:52:27 · 9 answers · asked by STP 2

1) 1.00 mol/L Na3PO4(aq)
2) 2.50 mol/L Na2SO4(aq)
3) 3.00 mol/L CaSO4(aq)
4) 4.00 mol/L NH4NO3(aq)

When the above solutions are arranged in ascending order of the total amount of ions in solution, the four digit number obtained is _ _ _ _

2006-06-12 17:02:05 · 3 answers · asked by Anonymous

1.) The total concentration of all the ions in a 1.15 mol/L solution of sodium sulphate is ____________ mol/L

2) Write an equation that describes what happens when the following compounds are put into water:
a)TlCl3
b)C2H5OH
c)Fe2(CO3)3

3) what is the volume of water added to 57.2mL of a 6.50 mol/L HCl(aq) solution in order to prepare a 0.356 mol/L solution

2006-06-12 16:25:37 · 4 answers · asked by Anonymous