Chemistry - January 2007

the label on the bottle directs you to add 22g of medium to 1000ml of distlled water . how many grams should you weigh to prepare 250 ml of medium?

2007-01-16 09:08:13 · 4 answers · asked by f w 1

Whats your educated guess? Im not trying to make you solve my homework, (besides i'll find out myself) but i still want to know what do you personally think.My hypothesis is that yes it can to put in a simple way. Anyways thank you for your input and take care.

2007-01-16 09:00:01 · 9 answers · asked by Anonymous

The question's pretty self-explanatory.

2007-01-16 08:45:08 · 5 answers · asked by the answer chancer 2

I have to answer this question for a lab report and it's not answered in the lab.

2007-01-16 08:36:22 · 1 answers · asked by siegfriedbalmung 2

2007-01-16 08:35:59 · 4 answers · asked by cordmcclarty 1

what are its properties?

what kinds of things could it be used for?

how do its properties make it suitable?

what makes it better than any other metals?

2007-01-16 08:26:35 · 8 answers · asked by Anonymous

C4H10 + O2 --------> CO2 + H2O (l)

I've been doing this for like ten years and can't get the stupid answer. Please help, thanks! =]

2007-01-16 08:05:53 · 4 answers · asked by Vallein 1

I thought all chemicals called "acid" were acidic

2007-01-16 08:02:45 · 3 answers · asked by Anonymous

2007-01-16 07:59:17 · 9 answers · asked by Anonymous

2007-01-16 07:58:22 · 13 answers · asked by Anonymous

2007-01-16 07:56:05 · 8 answers · asked by Anonymous

2007-01-16 07:54:27 · 5 answers · asked by Anonymous

I just started a class and dont have a book yet,
An order for medication reads: give 00.5o mL per kg of body weight. How much medication should be given to a patient weighing 161 lbs. How do i go about solving this. I have no clue. Thank you.

2007-01-16 07:48:53 · 4 answers · asked by Anonymous

http://img521.imageshack.us/img521/3931/periodtablejr8.png

2007-01-16 07:46:25 · 5 answers · asked by Anonymous

2007-01-16 07:41:44 · 12 answers · asked by bobbie 2

like sodium (v=1), and an atom having a high valence like iodine (v=7) and being stable at a negative charge. What quality on a periodic chart tells what charge an atom is stable at?

2007-01-16 07:10:48 · 1 answers · asked by Lisa 1

I am a student of chemistry. Please describe related to physical chemistry.

2007-01-16 07:02:37 · 8 answers · asked by ශාකුන්තල | shaakunthala 3

What is name for solid liquid and gas? Just 1 big word. I NEED TO KNOW!!!!!
Thankyou!

2007-01-16 07:00:58 · 6 answers · asked by *Natalie.* :P 5

Can someone tell me about Exothermic & Endothermic? I just want to know about it because later I have to do an Oral exam for my old class. I just want to know a little bit about it and I've looked it up but can't find it. Also can you tell me a little about the pH scale?

2007-01-16 06:53:23 · 4 answers · asked by queenpravato 1

2007-01-16 06:38:03 · 7 answers · asked by Anonymous

178 ml CO2
155 ml O2
1.25 L SF6

and please show me how??



AND
How many liters of H gas are formed from the complete rxn of 1.45 mol of C? Assume H gas is collected at a pressure of 1.0 atm and temp 355 K.

C(s) + H2O(g)---->CO(g) + H2(g)

Please tell me how. IM LOST. Thanks

2007-01-16 06:16:03 · 8 answers · asked by Angel Eve 6

please give me the detailed process of the MASS SPECTROMETER
thx

2007-01-16 06:00:55 · 7 answers · asked by moon_about_masa 1

I want to do a little science experiment and make my own complex molecules at home. Amino acids are readily available as vitamin supplements (all 20 of them). What I need to know is what chemicals to use to make chains with them. Any help is greatly appreciated.

Also, if you didn't know, all amino acids have a carboxylic acid group and a primary amine group, if this helps with an answer.

2007-01-16 05:52:13 · 4 answers · asked by Anonymous

Abbient temp +- 46'c crystal situated in rock cavity

2007-01-16 05:46:26 · 1 answers · asked by Theuns 1

Calculate Total Heat For A T Change/Phase Transition Sequence

From the following data, calculate the total heat needed to convert 0.219 mol ice at -6.50°C to liquid water at 7.26°C.

Melting point at 1 atm0°C
csolid2.09J/g°C
cliquid4.21J/g°C
ΔHfus6.02 kJ/mol

2007-01-16 05:44:43 · 2 answers · asked by Tanya s 1

Name 4 methods (or more) on how fibre evidence can be processed to obtain more points of caomparison for identification once it has been collected?

2007-01-16 05:36:55 · 2 answers · asked by rachel c 2

2007-01-16 05:21:01 · 10 answers · asked by Anonymous

Oh please help more biolgy questions.
Is it just that the identities change?

2007-01-16 05:03:04 · 3 answers · asked by Artemis 2

used for Acid-Base titrations

2007-01-16 04:55:27 · 3 answers · asked by yssacrekab 1

2007-01-16 04:53:03 · 15 answers · asked by ricky m 1