The electron configuration for magnesium is 1s22s22p63s2
Answer: I believe the answer is B. Sorry if i'm wrong
Explanation:
Answer:
B. move more quickly
Explanation:
As a sample of matter is heated, we know that the particles begins to move more quickly.
This is because the temperature of a substance is directly proportional to the average kinetic energy of a system.
- As the temperature increases, the body gains more kinetic energy
- This is translated to the particles of the medium.
- Then they begin to move quickly and very fast enough.
Answer:
B. CdSO4(aq) + K2S(aq) → CdS(s) + K2SO4(aq)
Explanation:
A precipitate reaction is when a solid forms, so in this case CdS is the precipitate.
Answer:
C2H5OH(l) +3O2(g) → 2CO2(g) + 2H2O(l)
it is combustion reaction and heat is also produced.
Explanation:
This is oxidation reduction reaction which is also called redox reaction.
C2H5OH is reducing agent while O2 is oxidizing agent.
Chemical equation:
C2H5OH + O2 → CO2 + H2O
Now we will balance the equation. In given chemical equation two carbon atoms on the left side and one carbon atom on the right side. While six hydrogen atoms are present on the left and just two hydrogen on right side. We will write coefficient two with carbon dioxide and and three with water molecules.
C2H5OH + O2 → 2CO2 + 3H2O
now we will balance the oxygen atoms. we can see there are three oxygen atoms on the left and seven on right side. we will write coefficient three with oxygen on left and equation becomes balance.
C2H5OH + 3O2 → 2CO2 + 3H2O
Complete chemical equation with physical states:
C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l)
