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You need to consider all the possibilities. Look at the figure below. In this example I have a pH indicator that transitions maybe 1 pH unit on the low side of the true equivalence point. As you can see, the error that is introduced will depend on which direction you are titrating from. The...

You're right. There is a difference in the way marking criteria are applied in these two subjects. I think there is a cultural difference, as in scientific cultural difference. Analytical Chemists value accuracy, validity and not over-stating the precision in a measurement or a calculation. When...

Have you downloaded the past HSC Exam Packs? https://educationstandards.nsw.edu.au/wps/portal/nesa/resource-finder/hsc-exam-papers This is the best free resource. You should also pick up a copy of the VET Electrotechnology Curriculum Framework Stage 6 Syllabus from the NESA website.

I reckon there is one standout YouTube channel you should bookmark. It is Bozeman Science, run by Paul Anderson. There is really only one book series that has what you need if you want to work ahead independently. Pearson Year 11 Skills And Assessment (Chemistry) and Pearson Year 11 Skills And...

I have used them all, and honestly the best series is the Pearson Chemistry series (student book and skills and assessment book), and Pearson Physics (student book and skills and assessment book). The editorial teams behind each series are extensive and very well qualified, the attention to...

I would have written it this way, it seems a bit clearer to me, and yes the constant for the definite integral should not appear at this stage: y=\int\int(3x^2-2x+1)\,dx\, dx

Here is an extract from the Stage 6 Design and Technology syllabus: I feel that you would enjoy the D & T course more than IPT. There are parts of IPT that are relevant to your interests, but there is also a lot of stuff in IPT (Transactional Processing Systems etc) that you might not enjoy so...

Here is a direct quote from the NSW Engineering Studies Stage 6 Syllabus. As you can see, Year 11 reports are expected to be less rigorous, but Year 12 reports are expected to "reflect actual engineering practice".

The reason we include Engineering Report Writing in Year 11 and Year 12 is to get students used to the structure of proper academic writing. Yes, you should have an abstract. Go have a look at some academic journals, see how the pros do it. There are places called academic publishing services...

Nuclear stewardship is a broad responsibility. Nuclear materials is what you will be dealing with; mostly you will be learning about power reactors and high-flux breeder reactors, but it will cover everything from mining, milling and concentrating radioactive and fissionable elements, through to...

H2S is flammable, so it contributes to the calorific value of biogas; the enthalpy of combustion is -518 kJ/mol of H2S. However the products of combustion are SO2 and H2O so you still have an atmospheric pollution problem to deal with.

If you don't know what the UNSW Prep Program is all about, then go and find out. Here is the link to the UNSW Handbook: https://www.handbook.unsw.edu.au/undergraduate/specialisations/2024/REGZE1?year=2024 The Preparation Program for Science includes a large number of electives, but basically you...

Regarding your compass, make sure it is a spring-bow compass with micrometer adjustment from a reputable brand. Those cheap wobbly compasses are worse than useless. If you have a reasonable budget, and you enjoy drawing then you could shop for an A3-size drawing board with T-square, protractor...

Every school has a different interpretation of depth studies. This is allowed. In theory, depth studies are supposed to be very diverse, and offer scope for students to pursue a topic of their own choosing, and present it in any way that is effective and scientifically valid. It is also allowed...

NESA has now published the marking guidelines for 2023 Engineering Studies, and it appears with regard to Question 21 (c) the Chief Marker has accepted just about any isometric view of the wing spar will receive full marks, regardless of whether it conforms to the stated viewing direction or not.

@anonymoushehe I think you are making a common mistake in confusing enthalpy with temperature. Temperature is an expression of the kinetic energy of particles. Enthalpy is the total internal energy of a system. In an endothermic reaction, the temperature of the system goes down because the...

Well that's an interesting hypothesis. Let's see if there is any evidence from the chemical data. You would need to compare molecules with approximately the same molecular weight. If you compare a range of primary, secondary and tertiary alcohols with 4 carbons, the trend is not clear-cut: I...

No, of course not. They are my freehand drawings.

I want to draw attention to what appears to be an error or drafting mistake in the NSW Engineering Studies examination. Question 21 was the first of the extended response questions, and it was examining Aeronautical Engineering. The question was worth 11 marks. It had four parts (a) worth 2...

EMF is not a force. EMF is a field potential or field potential difference. The units of EMF are joules per coulomb. The EMF of a point in an electric field is defined as the work done to bring 1 unit of positive test charge from infinity to that point within the electric field. The electric...