Chemistry - March 2007

true or false

2007-03-14 13:02:17 · 5 answers · asked by rerewr t 1

true or false

2007-03-14 13:00:05 · 1 answers · asked by rerewr t 1

2007-03-14 12:58:49 · 3 answers · asked by tammy b 1

what is the easiest most understandable answer for what molar mass is.

2007-03-14 12:56:54 · 4 answers · asked by Jon 1

The correct result of the molecular mass calculation for H2SO4 is
4* 15.9994 +32.066+2*1.0079

a) 98.08
b) 98.84
c) 98.074
d) 98.838
e) 98.079

Can anybody help... please

2007-03-14 12:52:38 · 1 answers · asked by Alan l 1

2007-03-14 12:51:40 · 5 answers · asked by Anonymous

2007-03-14 12:50:42 · 7 answers · asked by strawberry 7 2

1. A 0.23 M solution of AgNO3 is electrolyzed for 10.0 minutes with a current of 5.2 amps. What is the maximum number of grams of silver which could be plated out during the process?

2. If lead metal is produced by the electrolysis of lead (IV) oxide, how many grams of lead will be deposited by 4.1 amps during 15 minutes?

3. If lead metal is produced by the electrolysis of lead (IV) oxide, how long will it take to produce 2.6 grams of lead with current of 0.52 amps?

I know that 1 amp is 1C/sec, but how can I go from C to the answer? Your help is much appreciated.

2007-03-14 12:46:45 · 1 answers · asked by frogster99 2

Are acids and bases equally dangerous?

2007-03-14 12:46:40 · 2 answers · asked by Anonymous

true or false

2007-03-14 12:43:45 · 3 answers · asked by erterter h 1

true or false

2007-03-14 12:43:01 · 4 answers · asked by erterter h 1

true or false

2007-03-14 12:40:51 · 5 answers · asked by erterter h 1

true or false

2007-03-14 12:28:55 · 1 answers · asked by trytry y 1

true or false

2007-03-14 12:28:23 · 3 answers · asked by trytry y 1

74) Gasses expands to fill a vacuum. Why does earth's atmosphere gases not escape into the near-vacuum of space?
78) Name each compound:
A) SnBr2
B) BaSO4
C) Mg(OH)2
D) IF5
82) Classify the TYPE of each reaction:
A) Calcium reacts w/water to form calcium hydroxide & hydrogen gas
B) Tetraphosphorus deoxide reacts w/water to from phosphoric acid
C) Mercury & Oxygen are prepared by heating mercury (II) oxide
D) Aluminum hydroxide and hydrogen sulfide from when aluminum sulfide reacts w/ water.

2) is kelvin temp of gas if tripled, & Volume is double, the new pressure will be: (choose)
A)1/6 of original pressure
B)2/3 ''
C)3/2 ''
D)5 X ''
6)Real gasses like ideal gas when:(choose)
A) high pressure, low temp
B) Low P, High Temp
C)Low p, Low Temp
D) High P, High temp

2007-03-14 12:28:22 · 1 answers · asked by truckin_90 2

true or false

2007-03-14 12:27:55 · 5 answers · asked by trytry y 1

2007-03-14 12:25:19 · 5 answers · asked by jesus c 1

What is the longest chemical COMPound equation? I need to know for science????PLEASE

2007-03-14 12:19:11 · 3 answers · asked by bikini freako 1

true or false

2007-03-14 12:14:35 · 2 answers · asked by Anonymous

the car. Where does the other 80% go and is this a violation of the law of conservation of energy?

2007-03-14 12:11:59 · 3 answers · asked by ƙʀɨʂʂɨ ᴌɨᴛɀ 5

true or false

2007-03-14 12:11:34 · 3 answers · asked by Anonymous

true or false

2007-03-14 12:11:12 · 3 answers · asked by Anonymous

true or false

2007-03-14 12:10:49 · 2 answers · asked by Anonymous

C2F4
NH2CH2COOH
C5H2
CH2CHCl

2007-03-14 12:06:01 · 3 answers · asked by William R 1

2007-03-14 12:04:00 · 5 answers · asked by Kayana C 1

- use the particle theory to explain why the volume increases as water is heated into steam.

- using the understanding of the particle theory, explain how the addition of heat affects the particles in a solid state.

2007-03-14 12:01:01 · 2 answers · asked by Q 3

I know abot lipase, but I need researchings and yieldings about enzymatic transesterification

2007-03-14 11:53:08 · 1 answers · asked by miklescolco 2

referring to chemistry and etc please help asap!

2007-03-14 11:52:56 · 4 answers · asked by Kayana C 1

I dont especially get how Na gets a negative charge. How do you understand that part?

2007-03-14 11:40:25 · 2 answers · asked by Anonymous

what are the optimum conditions for the reaction haber process.

2007-03-14 11:36:10 · 3 answers · asked by sam's 1