I think this because they are getting much older and weaker so they’re bones tend to break down easily
153g/mols I think this is the answer but not 100% sure.
Answers:
1) - COOH
2) carboxyl group
The organic acids contain the carboxyl group: - COOH.
Fats are structures composed by fatty acids. Fatty acids are long aliphatic chains with a carboxyl group at the end.
Aminoacids are chains that contains amine group (NH2) at one end and the carboxyl group at the other end.
Then both aminoacids and fatty acids contain the carboxyl group (-COOH) at one end.
If I understand this right, the two elements are Nickel and Copper, elements 28 and 28, respectively. A nickel is worth 5 cents, and a penny, originally comprised of copper, is worth one - the total being six cents.
It’s 6.022x10^23. This is how many atoms of any element are in one mole of that element. No matter what it is, there are always 6.022x10^23 atoms per mole. So divide 1.81x10^24 by 6.022x10^23 to get approximately 3 moles of sulfur.