Search results

Hi, I'm doing B. Mathematics at Newcastle Uni. I got 97 in the HSC for Chemistry, Biology, Physics and 4U Maths. I also came 4th in the state for Chemistry and Biology. Rate: $30 / hour. Travel method: To be negotiated. I can come to your house if it's not too far away. Subjects...

I reckon this test is easier than most others... Certainly much easier than the 2003 one. I got everything, except 4c(iii) and 7a(iii). And they are 1 mark questions! (Must have had a brain-dead then). But anyway, I'm too lazy to think now. So what's the answer for 4c(iii) and 7a(iii) ...

While doing some HSC past papers, I realise something: - question 1 --> 4: test the basic knowledge. - Question 5 --> 6: test your neatness and carefulness. Most of the time they ask for partial integration, or some monsterous equations. - Question 7 --> 8: (especially question 8): often...

I think we need to list out specifically HOW the models help to develop an understand of ligands and chelated ligands (e.g.: help in identifying the bonding site). Then, we need to give specific examples of ligands and chelated ligands (e.g.: EDTA), then identify the bonding site in there.

Question: the equilibrium is: OCl- (aq) + H2O (l) <---> HOCl(aq) + OH-(aq). Which reaction condition(s) would favour the formation of HOCl? Options: A. Adding H2O B. Adding HCl C. Both A and B ----------------------------------------------- The answer is: adding Cl- but NOT...

Thanks. I got it. And just a quick note: for the "explanation" bit: Bbcause the electrons in the Zn and Cu atoms absorb UV / IR, so their electron configuration in the outermost shell are changed, thus they change colour. E.g.: Zn is white when cold, because its outermost shell is filled. But...

Thanks. I think physical models are more likely, since theoretical models are quite complicated.

To Cameron0110: Are you sure you not confused between subshells and shells? What you said, I think, applies for shell. The syllabus says: "... to predict the number of electrons in the outermost SHELL AND the SUBSHELLS occupied by these electrons". Using the ionisation energy trend, we can...

Syllabus extract: perform a first-hand investigation, gather information and analyse data to calculate initial and final velocity, max height reached, range and time of flight of a projectile for a range of situations by using simulations, data loggers and computer analysis Has anybody done...

Thanks very much. I got the specific temperature and pressure.

Syllabus point: discuss the importance of models in developing an understanding of the nature of ligands and chelated ligands, using specific examples I don't really understand the meaning of the word "model" in this question. Does it imply models like the Valence bond theory, the crystal...

Syllabus point: describe how trends in successive ionisation energies are used to predict the number of electrons in the outermost shell and the subshells occupied by these electrons How can successive ionisation energies be used to predict the number of electrons in the subshells ???? I...

Syllabus point: Explain the relationship between absorption and reflectance spectra and the effect of infra-red and ultra-violet light on pigments including zinc oxide and those containing Cu I'm fine with explaining the relationship between absorption and reflectance spectra --- but I can't...

The dot point: Outline the steps in the production of polyethylene as an example of a commerically and industrially important polymer I find some information but they are very inconsistent in terms of temperature, pressure, etc... And I'm not sure what we should include in the answer. Should...

The dot point: identify that developments in the 1950s led to biotransformation technologies that could produce required organic compounds such as cortisone and sex hormones As far as I know, biotransformation technologies use micro-organisms to make changes in molecules (like enzyme /...

The syllabus point: outline key events that led to the use of biotechnological practices, including: yeast in the manufacture of bread, yeast and fermentation for alcohol production, the use of other micro-organisms for the manufacture of yoghurt and cheeses Do you have any idea what to...