Chemistry - November 2006

2006-11-27 10:47:26 · 1 answers · asked by Karen J 1

2006-11-27 10:34:33 · 3 answers · asked by skyler t 2

(a) F -

(b) SO42-

(c) NH3

(d) HS

2006-11-27 10:26:43 · 2 answers · asked by Anonymous

2006-11-27 10:20:11 · 3 answers · asked by Polly 1

Fe^(3+) + SCN^(-) <---> [Fe(SCN)]^(2)

Tube 1 2 3 4 5 6 7 8 9
mL Fe(3+) [0.0] [1.0] [2.0] [2.5] [3.0] [3.5] [4.0] [5.0] [6.0]
mL SCN(-) [6.0] [5.0] [4.0] [3.5] [3.0] [2.5] [ 2.0] [1.0] [0.0]

can I find the concentrations?

Tube 1 2 3 4 5 6 7 8 9
absorbance 0 .420 .629 .658 .629 .509 .444 .260 0
[Fe(3+)] [ 0 ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ]
[SCN(-)] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ 0 ]

How do I find it? I searched my notes and books and emailed prof... please help

2006-11-27 10:05:05 · 1 answers · asked by Myra G 5

a. It ia a silvery metal.

b. It reacts with water.

c.It has a density of 0.86 g/cm3.

d. It melts at about 64 degree C.

2006-11-27 09:32:01 · 6 answers · asked by J 6

i bought 2 bags of sulfer when i went to a hot springs place but i dont know how 2 use it or if its corrosive in some way can u pls. help me?

2006-11-27 09:30:37 · 2 answers · asked by udamandan9304 2

2006-11-27 09:28:38 · 6 answers · asked by WriteAndWrong 2

2006-11-27 09:27:45 · 7 answers · asked by WriteAndWrong 2

2006-11-27 09:26:09 · 8 answers · asked by dan21993 2

Green light powder heated in a test tube. gas is given off, while the solid becomes black.. In which classification of matter does the green powder belong? and why??

2006-11-27 09:24:42 · 3 answers · asked by beauty mirna 3

what things have zinc in them and what are some facts about that particular item or if anyone has any websites thx

2006-11-27 09:20:51 · 2 answers · asked by Melly. 3

Calculate the kinetic energy of a hydrogen atom moving at a speed of 3055 m/s (In Joules)

2006-11-27 09:16:24 · 2 answers · asked by Anonymous

2006-11-27 09:12:58 · 5 answers · asked by a s 1

2006-11-27 09:05:41 · 2 answers · asked by Nicole J 1

2006-11-27 08:54:53 · 3 answers · asked by Brittney B 1

2006-11-27 08:46:47 · 2 answers · asked by Un Known 1

1.Calculate the standard molar enthalpy of formation for sulfur dioxide.

S(s) + O2 (g)---> SO2 (g)
Given the thermochemical equations below.

2S (s) + 3 O2 (g)-------> 2 SO3 (g)
enthalpy change= -791.5 kJ

2SO2 (g) + O2 (g) ---> 2SO3 (g)
enthalpy change= -197.9 kJ

2. The specific heat capacity of aluminum is 0.897 J/g.K. What quantity of heat (in joules) is required to heat 15.0 g of Al from 22.0 degrees celsius to 75.0 degrees celsius?

3. Determine the heat of vaporization of Titanium(IV) chloride given the enthalpiesof reaction below.

Ti(s) + 2 Cl2 (s)---> TiCl4 (l) enthalpy change= -804.2 kJ

Ti(s) + 2 Cl2 (s)---> TiCl4 (g) enthalpy change= -763.2 kJ

2006-11-27 08:46:34 · 2 answers · asked by Anonymous

Pure water freezes at 0C and boils at 100C. Would tap water likely freez and boil at those exact temperatures?
Why or why not? please......help me


and next question is..
People often sprinkle salt on icy driveways and sidewalks. Would a substance like flour have a similar effect on the ice? explain....

2006-11-27 08:26:27 · 3 answers · asked by hey 3

What is the formula for CuSO4 - 5H20?

Please explain.

2006-11-27 08:21:17 · 2 answers · asked by kay 2

A pentacoordinate carbon is a transient species in the ___ mechanism.

A. SN1
B. SN2
C. E1
D. E2

2006-11-27 08:16:47 · 4 answers · asked by Donzel S 1

Fe2O3 + 3CO -> 2Fe + 3CO2 is given.

2006-11-27 08:03:46 · 2 answers · asked by Mike 1

CH3Br, CH3CH2CH2I, (CH3)3Cl, CH3CHBrCH3, or CH3CHICH3

2006-11-27 08:00:09 · 3 answers · asked by lovely_antionette 1

a.bicyclo[3.2.0] heptane
b.bicyclo[2.2.1] heptane
c.cis-decalin
d.bicyclo[4.1.0] heptane
e.none of the above

2006-11-27 07:54:21 · 3 answers · asked by lovely_antionette 1

a. conformers
b. enantiomers
c. not isomers
d. constitutional isomers
e. diastereomers

2006-11-27 07:50:18 · 1 answers · asked by lovely_antionette 1

O22-
the first 2 is a subscript and the second 2- is a superscript

2006-11-27 07:49:23 · 6 answers · asked by I ♥ me 4

2006-11-27 07:46:25 · 2 answers · asked by a s 1

a. a quaternary bromide
b. a tertiary bromide
c. a secondary bromide
d. bromomethane
e. a primary bromide

2006-11-27 07:44:33 · 1 answers · asked by lovely_antionette 1

The last character is a capital "I" (eye)

2006-11-27 07:41:02 · 1 answers · asked by lovely_antionette 1

can anyone tell me as many uses of sodium stearate as they can for my science research please?

2006-11-27 07:36:06 · 3 answers · asked by Anonymous