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I've a few too and have pm'd.

My understanding is somewhat limited but I’ll have a go. 1. Yes, equilibrium in the barium oxalate continually dissolving and forming its precipitate. 2. Concentration: the concentration you are finding is the concentration of barium ions at the given ksp. These are dissolved in solution. The...

Those equations look right to me. For part b you could use a graphing tool like desmos if you don’t feel like drawing it as they are 2 straight lines, and you just want the point of intersection. Algebraically: Equate the expressions for d as when they meet they will be the same distance...

Hi, for the following question: You are standing next to a train track when a train comes towards you at 28m/s sounding its 400Hz horn. What is the frequency you hear? The speed of sound at your location is 332m/s. A) 472 Hz B) 400 Hz C) 338 Hz D) 474 Hz I realise that you can rule...

That's awesome and helps so much, thanks for your help!

As the title says. Can someone help me with this question? The answer is C but I can't seem to understand why. My thinking is that the integral should be equal to 0, which rules out A and B. Then, looking at D I think it would calculate the area in some cases, but never calculate the integral...

Yes please that’d be great!