Answer:
Thus,there are 0.2 mole in 8 g of calcium.
The answer is D; Mass and Velocity
Answer: 25.8 g of
will be produced from the decomposition of 73.4 g of
Explanation:
To calculate the moles :

The balanced chemical reaction is:
According to stoichiometry :
2 moles of
produce = 3 moles of 
Thus 0.242 moles of will produce=
of 
Mass of
= 
Thus 25.8 g of
will be produced from the decomposition of 73.4 g of
The sort of adaptations that are usually passed to the offspring of an organism is the adaptation that helps it survive in its environment.