Answer: True
The nucleus is a small, dense region at the center of the atom. It consists of positive protons and neutral neutrons, so it has an overall positive charge. The nucleus is just a tiny part of the atom, but it contains virtually all of the atom's mass.
Answer:
Y is a gamma ray in a nuclear equation, which y equals 0.
<h3><u>Answer;</u></h3>
EtO-PHE-NH2 + H+ _______ EtO-PHE-NH3+ Cl-
<h3><u>Explanation;</u></h3>
- <em><u>p-phenetidine is p-ethoxy aniline so the amino group acts as a base. The free electron pair on nitrogen will form a coordinate covalent bond with the H+ from the ionized HCl. </u></em>
- HCl is used for the acid-base reaction in p-phenetidine in amide synthesis of acetophenetidin rather than water becuase HCl's polarity contributes to a reaction driven to the right. It protonates the amine group, making it easy to dissolve.
Five hundred twenty million, three hundred and forty thousand. hope it helps!
<span>Answer:
(4.184 J/g·°C) x (185 g) x (24.70 - 21.00)âC = 2863.948 J = 2.86 kJ
(2.86 kJ) / (2.00 mol) = 1.43 kJ/mol</span>
