Answer:
behavior of objects for which all existing forces are not balanced.
Explanation:
A civilização egípcia se desenvolveu ao longo do rio Nilo em grande parte porque as enchentes anuais do rio garantiam um solo rico e confiável para o cultivo.
Answer:
There are 3 atoms in the 50 moles of Al
Explanation:
Q = mcΔT
m = 75 g
c = 4.25 J/gram°C
q = 2450 J
q/mc = ΔT
2450/(75 • 4.25) = 7.7°C
The temperature increased by 7.7°C.
The most common species of nitrogen in which its oxidation state is zero is the diatomic nitrogen (

). This is because the oxidation number of pure elements (whether alone as an atom or combined with other atoms of the same element such as the diatomic nitrogen) is always zero.
In addition to diatomic nitrogen, there are diazonium (

) compounds where nitrogen has an oxidation number of zero.