Answer:
The formula for Lead(ll) Oxide is PbO.
Explanation:
The symbol for Lead is Pb.
The symbol for Oxygen is O.
Given,Oxidation state of Pb = +2
We know,
Oxidation state of Oxygen in all Oxides is the same and is equal to -2,
Let the no. of Pb atoms in the oxide = x;
no.of Oxygen atoms = y;
Concept:
Sum of oxidation states of all atoms in any compound is equal to zero.
Applying concept,we get,
x(+2) + y(-2) = 0
x(+2) = y(+2)
Therefore, x = y
and, x : y = 1:1 ;
Therefore the empirical and the correct formula of the oxide is ,which is .
C would be the only logical answer if you really think about what it’s saying about the instrument.
Lithium oxide is able to undergo both the processes of dissolution and dissociation.
Dissociation refers to the break down a chemical substance into its constituents. Ionization refers to the loss of electrons from a chemical specie while dissolving refers to the ability of a solid to form a solution.
Let us now look at each of the following species;
- Lithium oxide undergoes dissolution and dissociation.
- Magnesium nitride undergoes dissolution and dissociation.
- Hydrobromic acid undergoes dissolution and dissociation.
Learn more about ionization: brainly.com/question/1602374
Answer:
For more substance the solid state is more dense than the liquid state.
Explanation:
Option B is true.
The substance in solid state are more dense than in liquid state because particles are tightly packed together.
while the case is different in water because ice is less dance than liquid water.
Density:
Density is equal to the mass of substance divided by its volume.
Units:
SI unit of density is Kg/m3.
Other units are given below,
g/cm3, g/mL , kg/L
Formula:
D=m/v
D= density
m=mass
V=volume
Symbol:
The symbol used for density is called rho. It is represented by ρ. However letter D can also be used to represent the density.
Other options are incorrect:
Unsaturated solutions will not dissolve more solute.
Unsaturated solution can dissolve more solute until it reach to the saturated solution.
Density is not temperature dependent.
it is temperature dependent.
A nonpolar solute will dissolve in a polar solvent such as water.
Dissolution always follow like dissolve like. A non polar solute will dissolve in non polar solvent.