Răspuns:
Explicație:
a.
MHCl= 1+ 35,5=36,5 ------> 36,5g/moli
n = m : M
n= 100g : 36,5g/moli=2,74 moli HCl
b.
MH2SO4= 2 + 32 + 4.16=98--------> 98g/moli
n= 1500g : 98g/moli=15,31moli H2SO4
c.
MCO= 12+16=28-------> 28g/moli
n= 12g : 28 g/moli=0,43 moli CO
d.
MHNO3= 1+14 +3.16=63------> 63g/moli
n= 630g : 63g/moli=10moli HNO3
e.
MNaOH= 23 +16 +1=40--------> 40g/moli
n= 0,8g : 40 g/moli= 0,02 moli NaOH
