Question

Ajutati va rog din suflet !!! dau 20 puncte

Answer 1

1. 2Fe+3Cl2 => 2FeCl3
2 mol Fe ... 2 mol FeCl3
x mol fe ........0.5 mol FeCl3
x= 0.5 mol Fe = 28 g Fe
2. Cu(OH)2 => CuO + H2O
 2NO + O2 => N2O4
3. a) A
b) A
c) F


1)a) generare/degajare
b)reactanti
2)
A. Ca + 2 H2O => Ca(OH)2 + H2 a) 5
B. 2 KClO3 => 2KCl + 3O2 d) 7
3.
1-b
2-d
3-a
4-c
4.
a)A
b)A
c) F
d)A

II. (CuOH)2CO3 => 2CuO + H2O + CO2
a) 5
b) 1
c) O=C=O

III. N2 + 3H2 => 2NH3
n NH3= 5 mol
1 mol N2 ... 2 mol NH3
a mol N2 .... 5 mol NH3 => a=2.5 mol N2
m N2 = 2.5mol * 28 g/mol = 70 g N2 [ M N2 = 28 g/mol]