Answer:
The answer should be 1000 kg / m3
Answer:
A. electromagnetic energy.
B. thermal energy.
C. solar energy.
D. mechanical energy.
Explanation:
Chemical. burning is a chemical change
Answer:
Explanation:
The formula of calcium nitride is Ca₃P₂.
The masses of each element are:
So, there are 61.94 g of P in 182.18 g of Ca₃P₂.
In 500 g of Ca₃P₂:
There are 
in 500.0 g of Ca₃P₂.
Answer:
The emmision of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei
or
the giving off of rays of energy or particles by the breaking apart of atoms of certain elements
