Question

Calcultati masa a 112 dm3 NH3 si volumul ocupat in conditii normale de 35,5 kg Cl2

Answer 1

1.V,NH3=112dm³

-calculez numarul de moli

1mol  are volumul ....Vm= 22,4dm³

x..........................................112dm³

x=n(sau niu)=5molNH3

-CALCULEZ masa acestor moli, stiind M,NH3= 17g/mol

1mol............17g

5mol.............x=m=...................................calculeaza !!!!

2. m= 35,5kgCl2        

calculez numar de moli, stiind M,Cl2=71g/mol

1mol........................71g

x.........................35500g

x=n(sau niu)=500mol

-calculezvcolumul ocupat de 5oo mol, stiin volumul molar,Vm=22,4l/mol

1mol..........22,4l

500mool........x= V=..........................calculeaza !!!!!!