Chemistry - January 2007

786271 microseconds to _____s? How to do

6035cm to ____m ?

I am finding chemistry very difficult.

2007-01-23 12:38:33 · 3 answers · asked by Anonymous

My Height = 70.5"
In cm = 179cm
Question: From my height data calculate the number of centimeters in one inch. Show work please

2007-01-23 12:20:18 · 3 answers · asked by Nicole S 1

2007-01-23 12:15:09 · 2 answers · asked by Anonymous

how could you improve the seperation of the spectral lines in your spectroscope. need to improve mine for science class. Making a skinnier slit does not count.

2007-01-23 12:08:56 · 1 answers · asked by Krazyk78 1

Determine the number of grams of NH3 produced by the reaction of 3.5g of hydrogen gas with sufficient nitrogen gas.

You must show:

1. The balanced equation. (2 points)

2. Your work showing cancellations. (8 points)

2007-01-23 12:05:58 · 2 answers · asked by j0nmarin0 1

this is for my daughter's homework, critical thinking

2007-01-23 12:00:22 · 4 answers · asked by boteekers 1

Also, is ink an element, compound, homogenous mixturem or heterogenous mixture? thx you'll be helping me clear something out

2007-01-23 11:49:45 · 2 answers · asked by Anonymous

Specific please! No phoney answers!

2007-01-23 11:49:43 · 2 answers · asked by swimmerdude313 3

what is it? is it p1v1.....

2007-01-23 11:38:37 · 1 answers · asked by Smiley 3

I have read that hydrofluoric acid will do the trick, but it is very dangerous to use. So, is there some other chemical that I can use to do anything to granite that I could use at my house?

2007-01-23 11:36:48 · 3 answers · asked by A B 1

I have a dog that is verry lovable towards me as long as Im not takeing him to the vet, but when he knows hes going for a ride I need to sedate him before I can even put a muzle on him, but he wont take oral meds and bites if he sees a needle!! (and no I never alow children around him!!)

Im thinking cloroform in a spray bottle to mist his face and see if that nocks him out enough to put a muzle on him and cary him to the back of the car for his vet visit (needs rabies updates)

2007-01-23 11:34:43 · 14 answers · asked by Anonymous

what is the molar mass of Ba(NO3)2 and how do I get that?
Ba= 137.33
N=14
o=16

What are the math steps that I have to do?

2007-01-23 11:02:49 · 2 answers · asked by Anonymous

Compare and contrast a covalent bond to an ionic bond by giving three description of how compounds made with covalent bonds.

2007-01-23 10:49:24 · 4 answers · asked by Hamza 1

Is it possible to make agar? If not what are some subsitutions? b/c i want to do gel electrophoresis...

2007-01-23 10:41:38 · 2 answers · asked by shoppingdiva 2

2007-01-23 10:35:53 · 9 answers · asked by sharlene p 1

Which gives the more concentrated solution, stearic acid [CH3(CH2)16COOH] in H2O or CCl4? Explain.

I know this has to do with intermolecular forces which I'm not so good at. I was thinking the answer was in H2O because it could exhibit H bonding and it would be more soluble, however, I was not sure if CCl4 would exhibit Ion-dipole bonding which then would make it the Solvent which would yield a higher concentration.

Is this right? Please tell me which one it is, if CCl4 can exhibit Ion-dipole bonding with stearic acid, and if H2O is not the right answer. Thank you

2007-01-23 10:33:49 · 2 answers · asked by meanest_pianist 2

Hi,
I have a question about chemistry.
1)When a metal is burned in O2 and mixed with H2O what is formed?
2)When a non metal is burned in O2 and mixed with H2O what is formed?

2007-01-23 10:32:25 · 2 answers · asked by Questions 1

People i desparately need anyones help, i have a exam this friday and i need to know answers to a couple of these question i will be forever grateful to whoever helps me. I REALLY need this please and thank you.

Questions:

1) What kind of intermolecular forces exist between molecules of water? Which of these gives water most of its uniqure properties

2) What color is seen when the following ions are used in a flame test: a) strontium, b) copper, c)sodium, d) magnesium

3) What kind of symbol would be found on a bottle of concentrated hydrochloric acid?

4) How do ionic substances dissolved in water

5) What property of water changes when calcium and magnesium ions are in high concentrations?

6) What changes happen to a lake when the concentration of human/industrial waste increases

bonus- you can answer this if u want to

what are th three types of conaminants for water

Thank you and i really appreciate all this help. THANK YOU!

2007-01-23 10:04:36 · 1 answers · asked by Anonymous

2007-01-23 09:56:47 · 2 answers · asked by WINDY O 1

2007-01-23 09:56:29 · 3 answers · asked by ehatt 1

If a gallon of H2.O weighs 10.lbs could you please tell me what the respective element weights and quantities are to make up one gallon

2007-01-23 09:37:25 · 3 answers · asked by Anonymous

2007-01-23 09:36:09 · 9 answers · asked by micropterushunt 2

I've noticed when looking on the back of food labels that in products with food dyes are labeled yellow #6 or red 40 lake? What's the difference between just a # & it including the word 'lake'.how are they different? Is either worse? Is this the same stuff that's in the food colouring I use for cakes? what does a food have to be to get either specification(of course they're all bad, but I mean composition.) If anyone can help it'd be greatly appreciated. thanx.

2007-01-23 09:31:04 · 1 answers · asked by What Dreams May Come 5

2007-01-23 09:00:42 · 2 answers · asked by Lisa 1

2007-01-23 08:48:02 · 8 answers · asked by Anonymous

chemistry for 300 Alex, the answer is..........


respond in the question format to be eligible for 10 pts.

2007-01-23 08:39:34 · 14 answers · asked by Anonymous

what the science say does that contradict christians beliefs

2007-01-23 08:23:55 · 8 answers · asked by Mark L 1

I need to do a chemistry worksheet & I'm really lost on how to get the answers. For example, I'm supposed to get the mass of 4.00mol from the element NaCl & have the answer in grams.Then another type of problem is how many types of molecule are in 3.61g of So2? & answer in terms of molecules. Can anyone help me or refer some websites to me?

2007-01-23 08:22:42 · 3 answers · asked by Spideyluvr 1

Can you help?? PLEASE!

2007-01-23 08:03:40 · 4 answers · asked by Anonymous

1. A sample of neon is collected at 2.7 atm and 12.0 oC. It has a volume of 2.25 L. What would be the volume of this gas at STP?

2. A sample of argon has a volume of 205 cm3 when its temperature is -44.0 oC and its pressure is 712 mm of Hg. What would be the volume of the argon at STP?


3. A student collects a 3.00 x 102 cm3 sample of hydrogen at 22.0 oC and 91.9 kPa. What volume would the hydrogen occupy at STP?

2007-01-23 07:55:57 · 1 answers · asked by rockinrobyn132000 1