Answer:
Salt
Explanation:
Because Na is sodium which is salt
Answer:
54 electrons
Explanation:
I(iodine) has 7 electrons on the last level, so it can take 1 more electrons.
I- also shows that 1 additional electron was added. (I^-1)
I (iodine) has 53 electrons.
So, I- will have 54 electrons.
The reaction is exothermic, the energy in the bonds has been released to the surroundings (causing the potential energy to go down). The increase in energy in the surrounding heats them up hence exothermic.
The question is incomplete, the complete question is:
What happens as a result of the kinetic energy of the particles in a liquid being comparable with the intermolecular attractions between the particles? A The particles do not move enough to change positions, so the liquid is not compressible. B The particles move enough that they separate from one another and take the shape of their container. C The particles do not move enough, so they are fixed in place, and the liquid has a fixed volume. D The particles move enough that they are not fixed in place, and the liquid can flow.
Answer:
The particles do not move enough to change positions, so the liquid is not compressible.
Explanation:
Intermolecular forces are the secondary bond forces that hold the particles of a substance together in a particular state of matter. In the liquid state, many times, it is observed that the kinetic energy of the particles is comparable to the degree of intermolecular attractions between particles. This has obvious implications for the liquid.
First of all, the kinetic energy of the liquid particles is significantly reduced such a that the particles do not move too much or translate. Hence the liquid will have a fixed volume and is also incompressible.
Explanation:
Given parameters:
Density of the ethanol = 0.789g/mL
Volume of the ethanol in the cylinder = 900mL
Unknown:
Mass of the ethanol = ?
Solution:
Since density is the mass per unit volume of a substance;
mass = density x volume
Now insert the parameters and solve;
mass = 0.789g/mL x 900mL
mass = 710g
In scientific notation we have 7.10 x 10²g