Daw the molecye as namol ) (2s)-2-amino-2-chloro ethan-1-ol 2) 1,1,3,3- letrapheny propan-2-amine 3) m, n,2,3,4,56hepha chlor ahil 33-amino- 3-phen 5) 3-amino- 3-puny penta-14-diene 6 ammonia

B.1 - hydrogren-1 can only mean there is 1 neutron. it's obvious there is 1 proton or else it wouldn't be hydrogen, so they wouldn't put a number after it unless they were indicating the number of neutrons

I'm pretty sure its c

The law of conservation of mass states that a mass of an object or the amount of matter composed inside an object or thing will not change unless it is added or removed of the matter that is contained in the object itself.