Question

calculeaza masa moleculara relativa CH4 CO2 SO2 NH3 NO3 SO3 H2O N2O5 SiO2 HCI NO P2O5

Answer 1

Mr(CH4)=Ar(C)+2xAr(H)=12+2=14
Mr(CO2)=12+32=44
Mr(SO2)=32+32=64
Mr(NH3)=14+3=17
Mr(NO3)=14+48=62
Mr(H2O)=2+16=18
Mr(N2O5)=28+80=108
Mr(SiO2)=28+32=60
Mr(HCl)=35,5
Mr(NO)=14+16=30
Mr(P2O5)=62+60=122