Chemistry - December 2006

figure it out

2006-12-03 06:04:14 · 6 answers · asked by Anonymous

i have a chemistry project about nuclear medicine. i have to answer these 3 questions:

1. What radiation is emitted when performing Nuclear Medicine?

2. Which isotopes do you use? How do decide which ones to use?

3. What are some major risks when experimenting with nuclear medicine?

Also, if you know, is there any type of Quantitative data i can gather from anything in nuclear medicine?

PLEASE help....if you know ANY of this, plz post an answer.
thanks!!!

2006-12-03 05:52:50 · 3 answers · asked by Anonymous

2006-12-03 05:51:23 · 3 answers · asked by Eureka! 6

I know your suppost to count the longest chain of C, but what about the O in the middle; does that disrupt the longest chain? Help!!

2006-12-03 05:50:41 · 1 answers · asked by *AH AH* 1

2006-12-03 05:44:26 · 5 answers · asked by russelthurmond 2

SUBJECT=Calories

In the experiment i will burn foods such as peanuts and marsmellows and use a calorimeter to determine the calories in each of them.

i still don't know how to make a hypothesis.
((i was thinking about figuring out saying that the more sugar in a substance, the more calories there are, but i don't know how to calculate the amount of sugar in a substance without reading the label))

2006-12-03 05:35:05 · 4 answers · asked by Anonymous

This is science?
Determin the identy of the following element described below.

1.This metal is very reactive, has properties similar to magnesium, and is in the same period as bromine.

2.This shows the percentages of elements in the earth's crust.
46.6% O
27.7% Si
8.1% Al
5.0% Fe
3.6% Ca
2.8% Na
2.6% K
2.0% Mg
1.6% Other

Excluding the"other" category, what percentage of the earth's crust is
a.alkali metals?
b.alkaline earth metals?

2006-12-03 05:31:04 · 3 answers · asked by rbd fan 1

a) 2-methyl-1-butene
b) 2 methylbutanone
c) 2-pentanone
d) 2-methylbutanal
e) no reaction

How are you suppost to figure this out? I am lost! I guess dehydration is a loss of a H???? explain please!

2006-12-03 05:30:46 · 2 answers · asked by Karen 1

1)Cu + HNO3---> Cu(NO3)2 + NO2 + H2O
2)Cu2S + O2---> Cu2O + SO2
3)Li + H2O---> LiOH + H2
4)CL2 + NaBr---> NaCL + Br2
5)Cu + H2SO4---> CuSO4 + SO2 + H2O
6)C + H2O---> CO + H2
7)K + H2O---> KOH + H2
8)CH4 + O2---> CO2 + H2O
9)Fe + AgC2H3O2---> Fe(C2H3O2)2 + Ag
10)Al + CuCL2---> ALCL3 + Cu
11)Fe2O3 + CO---> Fe + CO2

2006-12-03 05:22:41 · 4 answers · asked by Anonymous

If i understand right, a tertiary alcohol does not usually undergo oxidation. so....please help!

2006-12-03 05:12:02 · 3 answers · asked by *AH AH* 1

2006-12-03 05:08:36 · 4 answers · asked by beckycandy1515 1

For an extra credit project for my daughter. So far we came up w/only 3 (oil, water,vinegar).

2006-12-03 05:02:10 · 2 answers · asked by stephanie m 1

1.Concept maping:Use the folowing terms to create a concept map: periodic table, elements, groups, periods, metals, nonmetals, metalloids

Critical Thinking

2. When an element with 115 protons in it nucleus is synthesized, will it be a metal, a nonmetal, or a metalloid.Explain

3.Why was Mendeleev not able to make any predictions about the noble gas elements

4.Your classmate has offered to give you a piece of sodium he found while hiking. What is you response?explain

5. Determine the identity of each element described below
a.This is the most reactive metal in its period and cannot be found uncombined in nature. Each atom of the element contains 19 protons

b.This nonmetal is in the same group as lead

2006-12-03 05:01:33 · 4 answers · asked by rbd fan 1

2006-12-03 04:57:42 · 1 answers · asked by diksha_winsome 1

2006-12-03 04:52:40 · 4 answers · asked by beckycandy1515 1

2006-12-03 04:43:28 · 4 answers · asked by brandine 1

1. AL + CL2---> ALCL3
2. Na + CL2---> NaCL
3. H2 + O2---> H2O
4. Mg + O2---> MgO
5. H2 + N2---> NH3

2006-12-03 04:28:22 · 2 answers · asked by Anonymous

2006-12-03 04:20:54 · 9 answers · asked by Cap'nJohn 1

I would also like to ask why covalent bonds have lower melting points than Ionic ones.

2006-12-03 04:15:09 · 2 answers · asked by Anonymous

Determin the identy of the following element described below.

1.This metal is the mos reactive metal in its period and cannot be found uncombined in nature. Each atom of the element contains 19 protons.

2.This shows the percentages of elements in the earth's crust.
46.6% O
27.7% Si
8.1% Al
5.0% Fe
3.6% Ca
2.8% Na
2.6% K
2.0% Mg
1.6% Other

Excluding the"other" category, what percentage of the earth's crust is
a.alkali metals?
b.alkaline earth metals?

2006-12-03 04:13:16 · 3 answers · asked by rbd fan 1

1. KCLO3---> KCL + O2
2. NH4NO3---> N2O + H2O
3. Su2O3---> SuO + O2

2006-12-03 04:13:05 · 2 answers · asked by Anonymous

Short Answer
1.Why was Mendeleev's periodic table useful

2.How is Moseley's basis for arranging the elements different from Mendeleeve's

3.How is the periodic table like a calender

4.Describe the location of metals, metalloids, and nonmetals on the periodic table

Concept maping:Use the folowing terms to create a concept map: periodic table, elements, groups, periods, metals, nonmetals, metalloids

Critical Thinking

5. When an element with 115 protons in it nucleus is synthesized, will it be a metal, a nonmetal, or a metalloid.Explain

6.Why was Mendeleev not able to make any predictions about the noble gas elements

7.Your classmate has offered to give you a piece of sodium he found while hiking. What is you response?explain

8. Determine the identity of each element described below
a.This is the most reactive metal in its period and cannot be found uncombined in nature. Each atom of the element contains 19 protons

b.This nonmetal is in the same group as lea

2006-12-03 04:04:11 · 4 answers · asked by rbd fan 1

Im doing a science fair and no website can tell me how a normal thermometer works! Please make it able for a kid to read (dont use extremely long weird words). Anyway I'm desperate, and it is due tomorrow so please can people answer this. Thanx : )

2006-12-03 03:51:55 · 6 answers · asked by racecar2daendofdastreet 1

I am doing a research project on the use of TTF as a voltammetric electrode and while I have read a few journal articles I just feel that there may be people here that can help me with a little extra useful info/tips.

2006-12-03 03:47:09 · 1 answers · asked by Anonymous

2006-12-03 03:37:32 · 1 answers · asked by confused1 1

Can someone point me to any resource that gives info about producing Oxalic Acid from Sugar cane? A process flow diagram or a description - anything will do.

Oxalic acid is a by product of Sugar industry and I'd appriciate any other related info. I have finished following google searches. Thanks a lot !! :)

2006-12-03 03:18:44 · 1 answers · asked by planetebiz 2

2006-12-03 03:14:04 · 1 answers · asked by dainty 1

2006-12-03 03:00:21 · 5 answers · asked by Bmoco 1

2006-12-03 02:59:27 · 2 answers · asked by Naina P 1

Does anyone know where I could find the approximate size, mass, and volume of an oleic acid molecule

2006-12-03 02:48:32 · 2 answers · asked by Michael F 1