Number of results: 40
Will cooper based catalyst increase or decrease the cost of production process? And why? decrease the cost catalyst keeps costs down as it speeds up the reaction without the need for high temps and high pressures. If you are doing s103 its on page 86 block 8. Thank you very ...
Monday, March 12, 2007 at 8:15am by Miki
I know you can't do the work for me - but has anyone done question 1b & 1c for S103 TMA08 - As I am struggling and could really do with some idea of where to look Give us a question. We have no idea what 1b & 1c for S103 TMA08 is????? 1b - I have to draw a cross section ...
Saturday, April 28, 2007 at 3:00pm by Desmond
chemistry - s103
Post your question. Perhaps we can help. Is there anyone out there who understands Q5 of tma06 for s103? I don't understand a word of it hi i think that the functional group are NH2 and the c=0 does anybody come up with that they to me are all amine part iii i get O and N as ...
Thursday, March 8, 2007 at 2:57pm by DrBob222
what is the atomic number of ununhexium and the full symbol is this a transitional element that is a metal and what is its highest hydride and highest fluoride of ununhexium thanks What is known about Uuh can be found here. Look for element number 116. Go to www.webelelements....
Tuesday, January 30, 2007 at 4:35pm by mickey
Has anyone got any clues on tma 7 q3? I have posted the question regarding meiosis and Huntington disease but im still stuck.
Wednesday, April 11, 2007 at 3:38pm by Hol
Reaction 1 O ll CH2=CH-CH-OH + CH3-CH-CH2-C l l l CH3 CH3 OH compound 1 compound 2 Products? identify any functional groups in compounds 1&2, circle them and name them clearly? complete the equation for reation 1 by drawing the abbreviated structural formula, of the products, ...
Wednesday, March 7, 2007 at 5:16am by Pedro
Chemistry s103 Q5
Sorry cannot get formula to come out right - all items move to left Now you see the problem. But that can be overcome with line drawings and a word of explanation.
Thursday, March 8, 2007 at 3:13pm by Desmond
Any help with s103 06 QUESTION 5?? You would do better, I think, to post your question and let everyone try to help rather than using only students taking the course.
Monday, March 12, 2007 at 2:22pm by Gemma
hello to all any one else stuck on question 5 of tma 6? We can't help if you don't post the question. hi wheezer - yes think they've sent out the tma in a foreign languauge, or am I just dumb? yes i agree lol
Wednesday, March 7, 2007 at 4:17pm by wheezer
how can the interactions between the earth systems affect the climate?? any one help me i dont knw where to start and i need to write 700 words on it Step one is to read your S103 course materials rather than try to get someone else to answer it for you.
Saturday, April 14, 2007 at 7:14pm by angel
re s103 please could you help me on that question about methonal please please help im running out of time What question? Do you mean methanol? Please post your questions with the subject appropriately labeled, and not addressed to one person.
Tuesday, March 13, 2007 at 5:32pm by bex
I am required to give two examples of atoms/molecules from tocanide that can bind itself to receptor sites in the body via hydrogen bonding and the reasons for this. I have read through the text book and have been unable to extract this information,. question 5 tma06 - s103. ...
Wednesday, March 7, 2007 at 9:49am by layla
the isotope caesium -137, which has a half life of 30 years, is a product of nuclear power plants. How long will it take for the amount of this isotope in a sample of caesium to decay to one sixteenth of its original amount? - explain answer 1/16 = 1/2^x 2^x = 16 Solve for x.
Wednesday, March 7, 2007 at 4:59am by Pedro
bock 7 s103
is there anybody out there who have looked at tma 06 yet if you have could we pick each others brains lol thanks I looked up tma 06 on google and found many site regarding religion which certainly is not my field. Please clarify your question, if you still have one. If it is ...
Saturday, February 17, 2007 at 11:13am by bex
there are 3 rock types:(a)igneous,(b)sedimentary,(c)metamorphic.If rock (a)were to cut across both other rocks and (c) is the oldest rock, describe the new relationship between the rocks. are you doing 103 by any chance im stuck on this q as well and thought it might be asking...
Friday, April 20, 2007 at 1:13pm by ruby
Gametes produced in the process of meiosis in humans (chromosome 4)has a long and short arm the short arm has the gene for Huntington's (H) attached and the long arm the gene for Red hair (R) state the differences in the product cells at telophase II if a crossing over had ...
Tuesday, April 10, 2007 at 3:32pm by Gemma
S103 - Discovering Science
Is anyone Studying S103-Discovering Science. On TMA 6 blocks 7-8, having a little trouble can anyone Help Rather than using abbreviations, could you give us more details about your problem? This would help us to help you. I hope this helps a little. Thanks for asking. a) ...
Monday, March 5, 2007 at 12:31pm by Jon
I have read Le Chateliers principle but am having a little trouble explaining the effect of pressure and temperature on the equilibrium yield of methanol (CH3OH). Can anyone also tell me the effect of the increase of temp will have on the rate of the reaction? Yield of ...
Sunday, March 11, 2007 at 4:42pm by Bean
Reactants O ll CH2 = CH - CH - OH + CH3 - CH - CH2 - C l l l CH3 CH3 OH compound 1 compound 2 Products? identify any functional groups in compounds 1&2, circle them and name them clearly? complete the equation for reation 1 by drawing the abbreviated structural formula, of ...
Wednesday, March 7, 2007 at 5:13am by Pedro
Which element results if 2 protons and 2 neutrons are ejected from a radium nucleus with atomic number 88 and mass number 226 - show workings? What is actually ejected is an alpha particle (helium nucleus). The new atomic number is 88-2 = 86 and the new atomic weight is 226 - ...
Wednesday, March 7, 2007 at 4:57am by Pedro
pair up your nucleoide sequence with the mRNA sequence then you will find from the amino acids in the codons what amino acids are present in the lactase production. Each dna sequence coincincids with the appropriate mRNA sequence unless there is a mutation can someone please ...
Saturday, April 7, 2007 at 5:29am by Anonymous
could someone please help me i have to write about the start of life on a extrasolar planet and talk about chemical evolution,, could someone please give me some pointers Is this S103 ECA? yes it is im just need some pointers so that i can do the work in my own words but i ...
Friday, May 18, 2007 at 7:19am by bex
Hi, can you tell me what the valency of Aluminium and Selenium? hi i was going to pose that question im glad you did are you doing s103 by any chance Al is in group IIIA (or 3) depending upon the system you are using; therefore, it has three electrons in its outer shell, it ...
Wednesday, January 31, 2007 at 9:47am by Angelika
What ihe basis for the determination of Uranium 238-Lead radiometric date of 1120 ma for granite Wouldn't it be the ratio of U238 and lead in the granite? I do not think so, i have actually answer the question explaing it in words but i am not sure of it as the question is ...
Wednesday, March 28, 2007 at 10:16am by bonita
can anyone please explain the term regulating mortality factor (regarding the holly leaf miner )and how understanding of this can lead to successful biological control of pests in agriculture and horticulture hi are you doing s103 im finding this whole course very heavy going ...
Tuesday, April 3, 2007 at 6:42pm by Desmond
Can anyone help me please? I have a sample of granite, which has been determined to have a U238-Pb date of 1120 Ma. How can I find out how this was determined? I have been trying to calculate this but my brain has frozen, so any help would be appreciated! I don't expect the ...
Monday, April 30, 2007 at 4:25pm by Bean
Has anyone done Block 7-8 for TMA 6 for s103 - discovering Science, as i am struggling big time, any help would be much appreciated yes i am like you really phased by this how much of the tma have you managed to do Me, too what r u stuck on? I have been doing really well but ...
Tuesday, February 27, 2007 at 4:04pm by Adam
Chemistry s103 Q5
struggling to get this to come out right: Compound 1 CH2=CH-CH-OH | CH3 + Compound 2 O || CH3-CH-CH2-C | OH | | ? (i) identify any functional groups in compounds 1 & 2 by circling them and naming them clearly. (ii) complete the equation for reaction 1 by drawing the ...
Thursday, March 8, 2007 at 3:12pm by Desmond
I have to answer the question 'The age of granite can be determined using radiometric dating. Explain the basis for the determination of a 238 U-Pb radiometric date of 1120 Ma for granite'. Can anyone suggest any sources to help me? Thanks! http://www.jiskha.com/search/search....
Friday, April 27, 2007 at 7:35am by Bean
Uuh Empirical formulae
Hi Can anyone help me define the empirical formula for highest fluoride and hydride in ununhexium. 292 uuh 116 How is this reached... Thanks freddo Uuh is in group 16 (or VIA depending upon the system being used) so its chemistry should be similar to O2, S8, Se, Po, etc. S ...
Thursday, January 18, 2007 at 1:33pm by Freddo
Science - geology
The age of a granite can be determined using radiometric dating. Explain the basis for a determination of a 238U-Pb radiometric date of 1120Ma for a granite.......HELP!!! hi sounds like you are on the same course as me i was stuck on this so give this a go as this is what ...
Wednesday, April 25, 2007 at 4:05am by Desmond
Please could you tell me if I am going in the right direction. I am trying to write molecular formula for As2O3 I make molecular mass 197.8 gas density 17.8 to 3 sig figs 2.0 x density of gas at STP / density of hydrogen 17.8/0.0899 = 396 to 3 figs How do I go about matching ...
Sunday, January 28, 2007 at 8:07pm by Lucy
how do i calculate %of arsenic and oygen by mass and chem composition of the oxide that has been formed 0.702 sample of arsenicheated, material in boat, oxide of arsenic with mass of 0.927g please help %As = [(mass As)/mass oxide]x100=?? %O = [(mass O)/mass oxide]x100=?? From ...
Tuesday, January 30, 2007 at 4:18pm by mickey
OU Discovering Science Block 6
Im struggling on all of this and I just dont get it the terminologies or anything else would someone allow me to look at their notes that explain the assignment very simply as opposed to all of this technical stuff, just english would be great. My deadline is Friday of this ...
Tuesday, February 13, 2007 at 4:16pm by Jonesy 31
Al2Se3 (s) + H2O (sub>(l) ==> Al(OH)3 (s) + H2Se(g) You can see that this reaction produces hydrogen selenide gas. But it will be wet because of the water. I can't draw diagrams on the computer so you will need to research your text and notes to see how to set up the ...
Monday, February 5, 2007 at 9:47am by DrBob222
Need to write a balanced chemical equation for the reaction between hydrogen selenide and tin. I know that the hydrogen selenide decomposes producing solid tin selenide and hydrogen gas but how would I balance that in the equation. Any help gratefully recieved. I can write and...
Sunday, January 7, 2007 at 1:47pm by Mac
0.702g of arsenic an oxide of arsenic mass 0.927g how do i calculate the mass of oxygen that combines with 1 mole of arsenic atoms to form the oxide of arsenic. how many moles of oxygen atoms does this mass represent a and then using that answer i have to obtain an empiricl ...
Wednesday, January 31, 2007 at 1:31pm by minnie
DR BOB - Chemistry Question 4 a - d
a. State the atomic number of ununhexium and give the full symbol for the isotope ununhexium. b. Give the period and the group of the periodic table in which you would expect to find ununhexium, explaining how you arrived at your conclusions. Further name one other chemical ...
Saturday, February 17, 2007 at 1:28pm by Mark jones
Read earlier posts on this question and still find my self confused. The question being H2SO4(aq) -> 2H^+ (aq) + SO4^-2 (aq). A 21g sample of sulfric acid dissolved completely in sufficient water to make a 0.25 l of final solution. Calculate hydrogen ion concentration in ...
Sunday, February 18, 2007 at 4:53pm by SOS mature student
me again! got a question that really is trying! the isotope of ununhexium Uuh and it undergoes a succession of seven a-decay reactions. I need to find out what the final isotope would be as a result. And is the final product a lanthanide, an actinide, a transition element or a...
Tuesday, February 6, 2007 at 3:55pm by bertie