Answer:
2
Explanation:
You write your answer with the same number of significant figures as the number with the smallest amount of figures, in this case, that number is 2.1 so your answer should be written with 2 significant figures.
Answer: d) 164.9 g
Explanation:
To calculate the moles :
The balanced chemical reaction is:
According to stoichiometry :
2 moles of
require = 25 moles of
Thus 0.412 moles of
will require=
of
Mass of
Thus 164.9 g of oxygen is consumed.
By increasing Atomic number