Question

Va rog! Dau coroniță!!!

Answer 1

M,CuSO4.5H2O=M,CuSO4 + 5M,H2O= 160+90=> 250g/mol

250g piatra vanata.......160gCuSO4

1Og......................................X= 6,4g

M,NaOH= 40g/mol

1mol............2mol

CuSO4 + 2NaOH---> Na2SO4 + Cu)OH)2

160g............80g

6,4g............m= 3,2g NaOH=md

c=mdx100/ms----> ms= 3,2x100/10g= 32g solutie