Answer:
the answer is carrying oxygenated blood and nutrients to cells
Answer:
HCl is the formula for Hydrochloric acid
Explanation:
- Chemical formula is a formula of a compound showing the symbols of elements present in the compound.
- Chemical formula also shows the number of atoms of each element present in a compound.
- HCl is the chemical formula of hydrochloric acid. From this formula we can tell that hydrochloric acid is made up of hydrogen and chlorine elements.
- The formula also shows that HCl contains 1 hydrogen atom and 1 chlorine atom.
Answer:
It is an example of a precipitation reaction. Soap contains the conjugate bases of fatty acids, and these anions (carboxylates of fatty acids) tend to form insoluble salts with magnesium and calcium cations.
Explanation:
Usual soaps are made by a reaction called saponification, in which triglycerides (which are the main components of animal and vegetal fats and oils) react with a strong base (like KOH or NaOH), breaking the triglyceride into three fatty acid conjugate bases (carboxylates) and a molecule of glycerol.
These fatty acid conjugate bases are formed by a long saturated carbon chain and an ionised tip (i attached the structure of a generic fatty acid carboxylate). These anions form very insoluble salts with Calcium of Magnesium cations, and thus a precipitate is formed, therefore the answer is B.
Activation energy?? The energy needed to start a chemical reaction is called activation energy
I would say A but I am not sure