Answer : 5100 KJ
Explanation : In the given reaction of

we can see that 2 moles of Al is producing -850 KJ of energy
so for 12 moles of Al we can calculate as;
12 moles of Al X

= -
5100 KJ
So, we can say that 12 moles of Al will need -5100 KJ of energy.
Answer: most metallic Bi > Sb >As >P least metallic
Explanation:
Elements in same column of periodic table increase in metallic characters as you move down the periodic table
It’s molecular shape.
When the two hydrogen atoms bond with the oxygen, they attach to the top of the molecule rather like Mickey Mouse ears. This molecular structure gives the water molecule polarity, or a lopsided electrical charge that attracts other atoms. The end of the molecule with the two hydrogen atoms is positively charged.
Most definitely gravity. Gravity is what makes things go up and or down