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International Baccalaureate


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    • I think it might be too topical an issue.. like we dont know what examiner will be reading this or what their own experiences with rape might be. you also have to keep a passive voice in your presentation too as its a discussion more than an analysis, so be careful with your claims and counter-claims. You probably have more freedom with the presentation rather than the essay, as ib examiners only read the TKPPF, they dont see the actual presentation...  I would discuss it with ur tok teacher. maybe you could make it a sub-RLS rather than the central?   good luck x
    • I want to use the sir model for epidemics such as ebola or measles, but I can't come up with an original idea. At first I wanted to predict the time it would take to kill the whole world with ebola ignoring quarantine and such, but that equation uses the lambert w function... Ignoring the fact that it's a bit complicated, I wouldn't be able to explain the SIR model and the lambert w function while at the same time trying to prove a point in only 12 pages. I desperately need an idea, PLEASE HELP
    • oh okay, I'll be sure to check the articles out! Thank you so much for the advice and speedy response!
    • You may be surprised just how many posts we get on applying to York Regional IB schools. There are a lot more. Use the search bar at the top right of this page. (It seems that whenever people mention the name of IB school they are applying to, it's always Bayview or something). It seems that you are well prepared for math. They shouldn't test you on grade 9 material. If you have been reading on a regular or semi-regular basis then you should be fine for reading.   
    • The rate law is always empirically derived, and is independent of the number of reactants present. You can have only one reactant in a higher ordered reaction, or multiple reactants but zeroth or first ordered. In particular, Arrhenius equation only describes how temperature changes the rate constant, and it does not care about the order of reaction the rate constant is for. You should read more about how to derive rate laws for reactions of multiple steps, specifically regarding the equilibrium assumption and the pseudo steady state assumption. Maybe also review limiting reagents. Answer to Q1. The formula is for the reaction Fluorophore* -------> Fluorophore + Light. But you can assume that that rate is reflective of the original phenyl oxalate ester / H2O2 reaction. You should clearly justify this assumption. Answer to Q2. The short answer is yes. The long answer is that it doesn't matter. Digital probes rarely directly measures the quantity it outputs. Usually some conversion/calculation is done by the probe from an original measurement in resistance or pressure change to the desired quantity, such as illumination. It does not matter whether illumination is the same as illuminance; it's important that illumination (or whatever the output reading is) is proportional to the concentration of the fluorophore, or another chemical species of interest.
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