Question

va rog frumos am nevoie pe maine vs rog ​

Answer 1

Răspuns:

1. MZn=65g/mol

MH2=2×1=2g/mol

65g.....................................22,4l

Zn + 2HCl => ZnCl2 + H2

130g.....................................xg

x=130×22,4/65=calculează

2.

MAgNO3=108+14+3×16=170g/mol

n=m/M=15/170=0,08moli AgNO3

2moli..............................2moli

2AgNO3 + BaCl2 => 2AgCl + Ba(NO3)2

0,08moli..........................ymoli

y=2×0,08/2=calculează

3.

MH2=2×1=2g/mol

MCl2=2×35,5=71g/mol

MHCl=1+35,5=36,5g/mol

2g......36,5g.......2x36,5g

H2 + Cl2 => 2HCl

xg........yg................73g

x=73×2/2×36,5=calculează

y=73×36,5/2×36,5=calculează.