Question

Va rog e urgent dau si coroana

Answer 1

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