" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
b) 1 mol K2CO3=138g/mol 5 moli=690g
c) 1 mol Ca=40g/mol
0,5 mola Ca= 20g
d) 2*63=126g
2a) 3,2g S - x moli
32g S - 1 mol x=0,1 mola
b) 6g H2O - x moli
18g H2O - 1 mol x=0,33 mola
c) 12g Mg - x moli
24g Mg - 1 mol x=0,5 mola
d) 12,6g HNO3 - x moli
63g HNO3 - 1 mol x=0,2 mola
e) 11g CO2 - x moli
44g CO2 - 1 mol x=0,25 mola
1mol-207g
3mole-x
x=(207g*3mol):1=621 moli
b)5 moli K₂CO₃
M K₂CO₃= 2*39+12+3*16=138g/mol
1mol-138g
5moli-x
x=(138g*5moli):1mol=690 moli
c)0,5 mola Ca
1mol-40
0,5mola-x
x=(40g*0,5mol):1mol=20g
d)2 mole HNO₃
M HNO₃=1*1+1*14+3*16=62g
1 mol-62g
2 mole-x
x=(62g*2mol):1mol=124g
Zad.2.
a)3,2 g S
1mol-32g
x-3,2g
x=(3,2g*1mol):32g=0,1 mola
b)6g H₂0
M H₂0=2*1+1*16=18
6g-x
18g-1mol
x=(6g*1mol):18g=0,3 mola
c)12g Mg
12g-x
24g-1 mol
x=(12g*1mol):24g=0,5 mola
d)12,6 g HNO₃
M HNO₃ = 1*1+1*14+3*16=62g
12,6 g-x
62g-1mol
x=(12,6g*1mol):62g=0,2mol
e)11 g CO₂
M CO₂= 1*12+2*16=44g
44g-1mol
11g-x
x= (11g*1mol):44g=0,25 mol