va rog dau coroana ajutatima ex 4 va rog dau coroana
Răspunsuri la întrebare
Răspuns:
Explicație:
a. H2O M=2+16=18------>18g/moli
H2S M=2+32=34------>34g/moli
NH3 M=14+3=17--------> 17g/moli
PH3 M=31 +3=34------->34g/moli
HCl M=1+35,5=36,5------->36,5g/moli
b. SO2 M=32+2.16=64------->64g/moli
SO3 M=32+3.16=
CO2 M=12+2.16=
SiO2 M=28+2.16=
Al2O3 M=2.27+3.16=102------->
CaO M=40+16=
Li2O M=2.7 +16=
c. N2O M=2.14 +16=
NO M=14+16=
N2O3 M=2.14 +3.16=
NO2 M=14+2.16=
d. NaCl M=23+35,5=58,5------>58,5g/moli
FeCl3 M=56+3.35,5=
CuS M=64+32=
Al2S3 M=2.27 + 3.32=
KBr M=39+80=
e. NaOH M=23+16 +1=40------>40g/moli
Ca(OH)2 M=40+2.16+2=74------>74g/moli
H2SO4 M=2+32+4.16=98------->98g/moli
HNO3 M=1+14+3.16=63------->63g/moli