Answer:
Look it up
Explanation:
If you don't know then look it up
The number of electrons in an atom's outermost valence shell governs its bonding behaviour. Therefore, we group elements whose atoms have the same number of valence electrons together in the Periodic Table. ... This tendency is called the octet rule, because the bonded atoms share eight valence electrons.
Answer:
16
Explanation:
FIRST AND FOREMOST, BALANCE YOUR EQUATION.
Al + S8 ➡️ Al2S3
Numbers of Al=1. ➡️ Numbers of Al = 2
Numbers of S =8. ➡️ Numbers of S. = 3
USE COEFFICIENT TO BALANCE THE EQUATION.
16Al + 3S8 ➡️ 8Al2S3
Now the Numbers of Al and S in both sides of eqn. is balanced
The Answer Is 16
Heat of vaporization is the heat required to vaporize unit mass of a substance at it's boiling point. The heat of vaporization or condensation of water is 2257 J/g.
It means that 1 g of water involves 2257 J energy during condensation or vaporization at its boiling point (100 C)
Given mass of water vapor that is condensing = 11.2 g
Calculating the heat released when 11.2 g of water vapor condenses in to liquid water at 100
:

Rounding the final answer 25,278 J to three significant figures we get, 25,300 J
Therefore the correct answer is E. 25,300 J
Answer:
not a question but i need points yolo
Explanation: