Chemistry - October 2007

detailed answers appreciated loads its for homework plz help thx

2007-10-01 06:36:21 · 5 answers · asked by Anonymous

Cr(OH)4-(aq) + OH-(aq) + H2O2 --> CrO42- (aq) + H2O (l)
Thank You!

2007-10-01 06:31:52 · 1 answers · asked by jellykelly11789 1

Please answer as soon as possible!

2007-10-01 06:16:53 · 5 answers · asked by Anonymous

Only H+ or H2O may be added.

Cl2(g) --> ClO3-(aq) + Cl-(aq)

2007-10-01 06:13:15 · 4 answers · asked by jellykelly11789 1

Which orbital has the following quantum numbers?

n = 3 minimum value of ml = -1

2007-10-01 04:14:16 · 3 answers · asked by Anonymous

2007-10-01 03:30:35 · 3 answers · asked by darkraven_222000 1

2007-10-01 03:22:05 · 3 answers · asked by jnester0289 1

If it does, how long does it take?
Sorry just curious :D

2007-10-01 03:19:42 · 3 answers · asked by Pat U 1

1)Na
2)K
3)Mg
4)Al
5)Li

2007-10-01 03:08:16 · 2 answers · asked by shruthi3993 1

You mix 5.0 mL of 0.50 M Cu(NO3)2 with 2.0 mL of 0.50 M KI, and collect and dry the CuI precipitate. Calculate the following:


Moles of Cu(NO3)2 used:


Moles of KI used:


Moles of CuI precipitate expected from Cu(NO3)2.


Moles of CuI precipitate expected from KI.

What mass of CuI do you expect to obtain from this reaction?

If the actual mass of the precipitate you recover is 0.081 g, what is the percent recovery of the precipitate?

2007-10-01 02:23:32 · 2 answers · asked by Anonymous

1)Why is Plaster of Paris written as CaSO4•½ H2O? How is it possible to have half a water molecule attached to CaSO4?


2) How does Baking Soda help to make cakes and bread soft and spongy? Also, how is it a good fire extinguisher?


3) When electricity is passed through an aqueous solution of sodium chloride, three products are obtained. Why is the process called chlor-alkali?

2007-10-01 02:13:36 · 2 answers · asked by Akilesh - Internet Undertaker 7