Question

Cine ma poate ajuta
clasa a 10 a

Answer 1

m,H2O=40,5g
m,CO2= 88g

28,5g.........40,5gH20..................88gCO2
114..........m=162g......................m= 352g

n(niu)=m/M
n,CO2= 352g/44g/mol=8mol CO2= 8molC
n,H20= 162g/18g/mol= 9molH2O-----> 18molH
HIDROCARBURA ESTE  C8H18 ...   OCTAN

114g hidroc.........96gC.........18gH
100g.........................x...............y  
Afla compozitia procentuala ,calculand x,y.