The number of lone pairs that are most likely found on the central atom is zero. There are no lone pairs found on the central atom.
Answer:
I would say the purple one!
Explanation:
pretty sure it's both are physical changes.
Answer:
3.01 × 10^24 atoms of vitamin D
Explanation:
The number of atoms, molecules or ions present in a substance is given by the Avogadro's number which is 6.02 × 10^23.
Hence;
1 molecule of vitamin D contains 6.02 ×10^23 atoms
5 molecules of vitamin D contains 5 × 6.02 ×10^23/1
= 3.01 × 10^24 atoms of vitamin D
The answer is A. The vibration caused by the waves through the air eventually weaken, which is why sound diminishes easily over distance.
