Chemistry - July 2007

Investigating the properties of period 3 oxides.

Formula of oxides: Na2O2, MgO, Al2O3, SiO2. P4O10, SO2, Cl2O.
the solubility in hexane is want to knw whether can disolve in organic solvent and the action of water is state whether disolve/ soluble/ insoluble.

2007-07-23 07:26:21 · 4 answers · asked by ystan n 1

2007-07-23 07:25:36 · 9 answers · asked by lamide e 1

1. Pb(NO3)2+ K2CrO4-----> KNO3 + PbCrO4
2. Fe(NO3)3+NaOH---->Fe(OH)2+NaNO3
3. Cu(NO3)2+NaOH---->Cu(OH)2+NaNO3

2007-07-23 07:21:54 · 3 answers · asked by pwbapro 1

I'm totally stuck! I don't even know where to go with this!!! ahhhh!!

2007-07-23 07:20:29 · 2 answers · asked by sophia 2

The ACN used was somehow contaminated with piperdine. The C18 started to come out of one of the columns, ruining it. I'm not sure if the pip could have caused this.

2007-07-23 07:18:41 · 2 answers · asked by James 1

Investigating the properties of period 3 oxides

oxides:Na2O2, MgO, Al2O3, SiO2, P4O10, SO2, Cl2O

2007-07-23 07:13:40 · 2 answers · asked by ystan n 1

an element with protons and 14 electrons has what atomic number?
i have another question to
what is the electron valence of an element with atomic number 3?

2007-07-23 07:09:49 · 3 answers · asked by anthony r 2

Investigating the properties of the period 3 oxides.
oxides: Na2O2, MgO, Al2O3, SiO2, P4O10, SO2, Cl2O

2007-07-23 07:07:08 · 3 answers · asked by ystan n 1

to form an oxide with a formula of MgxOy...wht is the formula of the oxide?

2007-07-23 06:58:44 · 4 answers · asked by lamide e 1

2007-07-23 05:09:54 · 2 answers · asked by Anonymous

H3O+(aq) + Cl -(aq) + NH3(aq) = NH4+(aq) + Cl-(aq) + H2O(l)
H3O+(aq) + NH3(aq) = NH4+(aq) + H2O(l)
HCl(aq) + NH3(aq) = NH4Cl(aq)
none of these

2007-07-23 04:28:44 · 1 answers · asked by Anonymous

ok i am planning on doing a proyect on the decay of bones from soda, and im going to test this by submerging chicken bones on soda and checking for decay. I want to know if this is a good way of testing it or not. any suggestions?. Also does anyone know websites on what soda is and the ingredients and how it causes things to decay? if so, can you give me a couple of websites i could check out

-Thanks =)

2007-07-23 04:25:56 · 5 answers · asked by Anonymous

NaOH(aq)
Na2CO3(aq)
both (a) and (b)
neither (a) nor (b)

2007-07-23 04:10:47 · 3 answers · asked by Anonymous

2007-07-23 03:31:58 · 3 answers · asked by Anonymous

expected by interrogative questions upon life. Thank You.

2007-07-23 02:41:19 · 6 answers · asked by Anonymous

2007-07-23 01:07:01 · 5 answers · asked by jack_hock2003 1

does it have a reaction?

2007-07-23 00:00:13 · 9 answers · asked by Rawwr* 3

Is there anything like this on the internet? A conversion CHART, not an online converter.

2007-07-22 23:01:06 · 3 answers · asked by Michael 2

Magnesium burns brightly in oxygen to give magnesium oxide, which contains the ions mg2+ and 02- . The formation of both these ions from their elements is strongly endothermic. Why, therefore, should magnesium combine with oxygen?

2007-07-22 22:36:29 · 3 answers · asked by leera 1

please explain in detail

2007-07-22 21:36:33 · 3 answers · asked by dark_ak 1

In demonstrating the Law of Multiple Proportions, the ratio of the masses of oxygen that combine with a given mass of nitrogen in the compounds NO2 and N2O5 is

A) 3:1
B) 2:5
C) 2:3
D) 4:5
E) 2:1

2007-07-22 20:43:29 · 1 answers · asked by ~daweed~ 3

I have 150ml of solution from a student's experiment in producing H2SO4. The student used a variation of Glauber's method for producing a small amount of H2SO4. (burning sulfur & NaNO3 mix to oxidize sulfur into SO2. combining SO2 with air to form SO3, then bubbling the mixture into water. This is the 17th century method. No sweet vanadium catalyst required.

Question 1: He didn't have any NaNO3, so he substituted KNO3.
Am I right that this should still work? i.e. both oxidizers will oxidize sulfur to SO2 when burned?

Now the big question. How can I determine (chemically, electrically, numerologically -anything but orally or sexually :) ) whether this 150ml solution is dilute H2SO4, H2SO3, or a mix of both?

I know both chemicals have distinguishing physical properties (H2SO3 = on-your-*** sulfurous odor), but this is so diluted, none are apparent. All I have to go on is, it's 150ml of clear liquid with no odor and pH <1.

Thanks in advance.. Again.

2007-07-22 19:52:04 · 2 answers · asked by Kelani 3

2007-07-22 18:53:49 · 6 answers · asked by saeed 1

I need to make 1L of 50% ethanol solution, is it possible to make this volume of ethanol solution? I would really like to see how to write out this problem!

2007-07-22 18:35:41 · 5 answers · asked by Anonymous

you know how gases on earth follow a certain set of laws, how about the gases on jupiter? do they follow the same laws?

2007-07-22 18:27:19 · 4 answers · asked by Hannah C 1

1) What must we know about a given ionic salt to be able to predict whether it is a good or poor conductor, without testing its conductivity?

2) When doing a conductivity test, what controls the brightness of the light? Is it tap water or NaCl?

2007-07-22 17:59:32 · 2 answers · asked by lulu 1

2007-07-22 17:00:44 · 2 answers · asked by ~daweed~ 3

What is the standard enthalpy of formation of aqueous potassium chloride (kcl(aq)) ??!!!!!!!!!!!

2007-07-22 16:58:04 · 1 answers · asked by waddle_waddle_waddle_penguin 1

thanks in advance!! =)
god bless u all

2007-07-22 15:57:38 · 3 answers · asked by san 2

2007-07-22 15:57:24 · 1 answers · asked by z@MeL 2