Question

Rapid dau coroana si inima

Answer 1

Răspuns:

1.

schema reacției de combinare

A + B => C

exemplu

C + O2 => CO2

2.

a) N2 + 3H2 => 2NH3

b) 2C + O2 => 2CO

c) NH3 + HCI => NH4Cl

d) 2Zn + O2 => 2ZnO

3.

a) N2 + 3H2 => 2NH3

1 mol N + 3 moli H=> 2 NH3

b) 2C + O2 => 2CO

2 moli C + 1 mol O => 2moli CO

c) NH3 + HCI => NH4Cl

1 mol NH3 + 1mol HCI => 1 mol NH4Cl

d) 2Zn + O2 => 2ZnO

2 moli Zn + 1 mol O => 2 moli ZnO