Answer:
A. increases
Explanation:
According to the Gay-Lussac's law:-
Thus, at constant volume and number of moles, Pressure of the gas is directly proportional to the temperature of the gas.
P ∝ T
Also, it can be written as:-
Thus, if the temperature is increased, the pressure exerted by the gas also increases.
Explanation:
A solid compound formed by chemical reaction of a positively charged cation with a negatively charged anion is known as ionic solid. Ionic bonds exist between an ionic solid.
When dissolved in water, ionic solids dissociate into ions. Hence, they are able to conduct electricity as electricity is the flow of ions or electrons.
A molecular solid is a solid in which molecules are held together by Vander waal forces. They do not conduct electricity as there is no unbalanced charge on the compound.
Solids in which atoms of metal are held together by metallic bonds are known as metallic solids. These conduct electricity when present in solid state for bond overlap.
A covalent solid is a substance in which atoms are held together by covalent bonds. They do not conduct electricity and have high melting point.
Thus, we can conclude the following.
- A >1000 °C does not conduct electricity : Covalent solids
- B 850 °C conducts electricity in the liquid state, but not in the solid state : Ionic solid
- C 750 °C conducts electricity in the solid state : Metallic solid
- D 150 °C does not conduct electricity : Molecular solid
Answer:
See detailed explanation.
Explanation:
Hello.
In this case, since the electron configuration of potassium whose atomic number is 19 turns out:
We can see that the last level is 4 which has one electron, meaning that potassium has one valence electron. Moreover, since bromine's atomic number is 35, its electron configuration is:
We can see that the last level is also 4 and it has 2+5 = 7 valence electrons. In such a way, we infer that the valence electrons are computed by the electrons at the outer or last energy level of an element.
Regards.
Answer:
a
Explanation:
Each oxygen molecule has 2 hydrogen molecules
