Question

Sa se detemine formula substantei a carei masa e 64 si care contine 43,75 N
50%O , 6,25%H

Answer 1

100g substanta.........43,75gN.......50gO........6,25gH

64g.....................................x.....................y....................z

x= 28g-----> niu= m/M= 28g/14g/mol= 2molN

Y=32g----------------------niu= 32g/16g/mol= 2mol O

z= 4g.............................niu= 4g/1g/mol=4molH

H4N2O2