Răspuns:
m,CaO=280g
m,Ca(OH)2?
miu,CaO=56g/mol
miu,Ca(OH)2=74g/mol
56g..........................74g
CaO + H2O---> Ca(OH)2
x............................280g
x=m=212gCaO
c mdx100/ms
md=280g
ms= mdx100/c= 280x100/10g=2800g
dar ms= md+m,apa----> m,apa= 2800-280=>2520g
Explicație: