Mass = PROTONS + neutrons. So, 19 +20 = 39.
(Don't confuse yourself between electrons and protons when they are equal because it could be an ion)
The melting point of camphor is 178.4°C which is also the freezing point.
After the unknown substance is added, the freezing point is reduced to 173.6°C.
The freezing point depression is
178.4°C - 173.6°C = 4.8°C
The molar mass of the substance can be found using the equation
Kf m = 4.8
37.7 (0.664 / MW) = 4.8
MW = 5.22 g/mol
Based on the concentration of the solutions, the increase in volume is as follows:
- the volume of the 20% (m/v) starch increases
- the volume of the 10% (m/v) albumin increases
- the volume of the 5% (m/v) sucrose increases
<h3>What is osmosis?</h3>
Osmosis is the movement of water molecules from a region of low solute concentration to a region of high solute concentration through a semipermeable membrane.
The movement of water molecules in the solution pairs is as follows:
- the volume of the 20% (m/v) starch increases because water moves in from the 10% (m/v) starch solution.
- the volume of the 10% (m/v) albumin increases because water moves in from the 2% (m/v) albumin
- the volume of the 5% (m/v) sucrose increases because water moves in from the 0.5% (m/v) sucrose.
Therefore, the increase in volume depends on the concentration ofvthe solutions.
Learn more about osmosis at: brainly.com/question/2625460
The answer would be D, abandoning young before eggs hatched, due to the fact that the eggs would probably fail to develop correctly as a result of improper care. The other choices would actually increase their chances of survival.
