Question

Folosind raportul de masa calculati compozitia procentuala a urmatoarelor substante SO2 si H3PO4
va rog cat de repede posibil

Answer 1

SO2 
mS:mO=32:32=1:1
1+1=2
2g SO2-------1g S-------1gO
100g------------a------------b
a=100:2=50 la suta S
b=50 la suta O

H3PO4
H:P:O=3:31:64
3+31+64=98
98 g H3PO4--------3gH------31gP-------64gO
100g-------------------a--------b---------------c
a=100.3:98=3,06 la suta
b=100.31:98=31,63 la suta
c=100.64:98=65,3 la suta