Answer:
1. Category +1: 
, 
, 
, 
,
2. Category -1: 
, 
3. Category 0: 
Explanation:
1. Category +1:
The more common number of oxidation of the oxygen is +1.
2. Category -1:
The hydrogen takes the number of oxydation -1 in the hydrides.
3. Category 0:
The number of oxydation of an isolated element is always 0.
Thea answer is the heat released or absorbed during the formation of a pure substance from its elements follow me
Answer:
Option A = 17.03 g/mol
Explanation:
Given data:
Atomic mass of nitrogen = 14.01 g/mol
Atomic mass of hydrogen = 1.008 g/mol
Molecular mass of NH₃ = ?
Solution:
Molecular mass of NH₃ = (14.01 g/mol × 1) + (1.008 g/mol × 3)
Molecular mass of NH₃ = 14.01 g/mol + 3.024 g/mol
Molecular mass of NH₃ = 17.03 g/mol
Ammonia consist of hydrogen and nitrogen both are nonmetals that's why ammonia is an covalent compound.
