chem

I'm in year 10 and am doing Ext. Maths, Adv. English, Economics, Physics, Chemistry, and engineering studies. I am looking for tutors for these subjects, preferably not personal. Any help would be great.

Is there any rule about which hydrogen in alkane will be replaced by a halogen atom during substitution reaction as per below? Thank you in advanced!!!!!

Hey guys!! So I've just started my HSC course for 2020, and I'm the only one doing Chemistry in my cohort. So I've been placed in a distance education school. Is there anybody who could share chemistry HSC notes for the new syllabus for free? I'm asking for too much already but oh well :)

Hey everyone, Is it easier to get a better ATAR is economics or chemistry?