The following choices are all extensive properties, meaning they do not change with the amount of the substance. Although, 3 of the properties, namely, density, solubility and thermal conductivity are temperature-dependent. Since the problem did not mention of heating, let's assume Kenya just used it directly for her meal. Among the choices, I think shape would change. Once you place it in the meal, you can no longer pinpoint the salt because it's shape has been changed.
Answer:
Find attached the structure of asparthic acid and phenylalanine
Explanation:
Answer:
I think B
Explanation:
There are more negative ions than positive ions
Answer:
This is the tendency for particles in suspension to settle out of fluid in which they are contained and come to rest against a barrier.
Explanation:
In sedimentation, the particles are in a fluid and under the influence of forces , for example, gravitational forces, they settle and then come to rest when faced with a barrier.
The settling process is the process in which the particles fall out of liquid and sedimentation is the end of the process.
Answer:
AlN has highest melting point among given.
Explanation:
As per ionic model, ionic compounds are held together by electrostatic force. The ionic compound having strong electrostatic force will have high melting point.
Electrostatic force is proportional to charge and size of constituent ions.
In case of MgO
Charge on Mg = +2
Charge on O = -2
In case of LiF
Charge on Li = +1
Charge on F = -1
In case of AlN
Charge on Al = +3
Charge on N = -3
In case of RbF
Charge on Rb = +1
Charge on F = -1
In case of CaS
Charge on Ca = +2
Charge on S = -2
As magnitude of electrostatic force is highest in AlN, therefor, it has highest melting point.
