Answer:
<h2>3920 Joules</h2>
Explanation:
The potential energy of a body can be found by using the formula
PE = mgh
where
m is the mass
h is the height
g is the acceleration due to gravity which is 9.8 m/s²
From the question we have
PE = 40 × 9.8 × 10
We have the final answer as
<h3>3920 J</h3>
Hope this helps you
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:
c
Explanation:
in kc we only consider gases and aquas not solids and liquids
No it won't lose but it will gain and it gain up to it will fill 8 and because it need to satisfy the octet rule 7 will lose or gain electron and because it needs to stastify the octet rule by filling it up till 8 valence electron
