Chemistry - October 2006

A huge excavation at a construction site upwind and very near the marina where I keep my sailboat is putting out a lot of very fine dust that contains ferrous oxide. This stuff is coating every surface of the boats. What are the potential damages to stainless steel and aluminum fittings on our boats?

2006-10-04 16:26:57 · 3 answers · asked by cat38skip 6

2006-10-04 16:06:34 · 11 answers · asked by =) 4

2006-10-04 16:06:14 · 8 answers · asked by Anonymous

If you can, please respond using at least 3 sentences.

2006-10-04 16:02:48 · 8 answers · asked by Royce R 1

2006-10-04 15:18:47 · 6 answers · asked by rabiamoghul 1

2006-10-04 15:12:53 · 7 answers · asked by rabiamoghul 1

true or false

2006-10-04 15:11:12 · 6 answers · asked by rabiamoghul 1

(as atomic number increases)

2006-10-04 15:02:39 · 4 answers · asked by pnoiz1 2

I formed Magnesium oxide from magnesium metal. Here is the following data:
1) Mass of crucible and cover= 32.032g
2) Mass of crucible, cover and magnesium= 32.346g
3) Mass of crucible, cover and oxide after 1st heating= 32.556g
4) Mass of crucible, cover and oxide after 2nd heating= 32.559g

Can anyone tell me how to find the following:
1) Mass of magnesium metal
2) mass of magnesium oxide
3) Mass of oxygen in the magnesium oxid
4) Moles of magnesium in the sample
5) Moles of oxygen in the sample
6)experimental ration of mol Mg to one mol 0 (decimal form)

2006-10-04 14:56:59 · 2 answers · asked by Anonymous

a substance that cannot be broken down to simpler substances is an compound.

2006-10-04 14:54:03 · 12 answers · asked by omer 1

2006-10-04 14:52:46 · 3 answers · asked by Anonymous

when solid ice melts to become a liquid has undergone a chemical change

2006-10-04 14:52:10 · 7 answers · asked by omer 1

i just asked myself right now that question while i was looking at the periodic table.

2006-10-04 14:50:53 · 3 answers · asked by poet356 1

the color of a substance is an example of physical property

2006-10-04 14:47:02 · 12 answers · asked by omer 1

the zero point on the kelvin temperature scale is called absolute zero.

2006-10-04 14:43:50 · 14 answers · asked by omer 1

the si unit if energy is the 0 C

2006-10-04 14:41:56 · 3 answers · asked by omer 1

Chemistry, I can't seem to find the reason how.

2006-10-04 14:39:39 · 7 answers · asked by poet356 1

15) a. What is the molar mass of an element?
b. To two decimal places, write the molar masses of carbon, neon, iron, and uranium.

2006-10-04 14:37:16 · 7 answers · asked by Lion 1

14)
b. What is the abbreviation for mole?
c. How many particles are in one mole?
d. What name is given to the number of particles in a mole?

2006-10-04 14:36:16 · 6 answers · asked by Lion 1

1.When 6 protons and 6 neutrons unite to form a carbon atom, the net mass of the 12 nuclides decreases slightly. This _________ multiplied by __________ equals the nuclear binding energy of carbon 12


A.mass defect, the atom's mass
B.mass difference, mc^2
C.mass defect, mc^2
D.mass difference,the atom's mass


2.What statement about functional group is false?

A.A functional group in an organic compound typically dictates its chemical properties

B.Ethane and Methane are examples of functional groups

C.The notations (----O-----) or (---OH) represent functional groups

D.Amines and amides include nitrogen in their functional groups

2006-10-04 14:25:52 · 1 answers · asked by smarty pants 1

2006-10-04 13:49:19 · 10 answers · asked by Anonymous

please solve and explain how to solve:
Ibuprofen is made up of carbon, hydrogen, and oxygen. when a sample of ibuprofen wighing 5.000 g burns in oxygen, 13.86 g of CO2 and 3.926 g of water are obtained. waht is the simplest formula of ibuprofen?

2006-10-04 13:40:54 · 3 answers · asked by xoMadisonxo 2

Please show how to do and give answer to :
Combustion analysis of 1.00g of the male sex hormone, testosterone, yields 2.90 g of CO2 and .875 g of H20. What are the mass percents of carbon, hydrogen, and oxygenin testosterone?

2006-10-04 13:38:08 · 1 answers · asked by xoMadisonxo 2

and what is the difference between have rashing rings or bubble "dishes"...

I am sorry I do not know if the terminology is all right, i hope you can understand me.

2006-10-04 13:38:00 · 1 answers · asked by Anonymous

2006-10-04 13:17:23 · 5 answers · asked by Thomas A 1

2006-10-04 13:10:25 · 2 answers · asked by um yea hi 4

2006-10-04 13:07:35 · 3 answers · asked by um yea hi 4

A 0.35 M solution of a weak acid is 4.2% dissociated.

(a) Calculate the [H3O+], pH, [OH -], and pOH of the solution.

(b) Calculate Ka of the acid.

2006-10-04 12:49:27 · 2 answers · asked by mariah3785 1

i know the mass(amu), the % abundance and the mass number... how do i find the average atomic mass?

2006-10-04 12:47:16 · 3 answers · asked by Anonymous

2006-10-04 11:44:35 · 2 answers · asked by bjsjr1960 1