Recent content by louischaman

I am writing an essay on Space travel for my A level coursework. I am writing about Hohmann transfer orbits. At the moment I am using the wikipedia page: http://en.wikipedia.org/wiki/Hohmann_transfer_orbit It explains how you can derive this: From this: I can't do the in...

for my titration at school i need to create a sodium carbonate solution do i need to heat up the water or can i dissolve the sodium carbonate with simply stirring? help would be much appreciated

Firstly his is my first post on this forum so hello. Okay, well i encountered a major problem while doing my titration 2 days ago and I am unsure of why. the titration was to find out the concentration of sulphuric acid in a sample of "acid rain" (i recon it was just sulphuric acid...