C or A I may be incorrect but those are what I think it is
NaCl consists of a salt, which is a nonmetal (Na) and Cl, which is a metal. When a nonmetal and a metal are combined, it makes the compound ionic.
The movement of these tectonic plates is likely caused by convection currents in the molten rock in Earth's mantle below the crust. Earthquakes and volcanoes are the short-term results of this tectonicmovement. The long-term result of plate tectonics is the movement of entire continents over millions of years
Answer:
I think the last one
Explanation:
The reason for that is because when you go up to present something you always want to try to hav believability and confidence.
The answer is <em>a. "The melting point of the fatty acid decreases as the number of double bonds increases" </em>because when there are double bonded carbons it cancels the polarity of the carboxyl in the opposite direction, increasing that effect as double bonded carbons add to the molecule, giving the net dipole moment to the molecule. As the net dipole moment of the molecule decrease, the melting point of the fatty acid also decreases.
In addition, when the fatty acid is major than 8 carbons and have a double bond that prevents the fatty acid from crystal lattice formation, so the melting point will be lower also for this reason in this case.
