<u>Answer:</u> The total number of electrons that must be shared between carbon and oxygen atoms are 8.
<u>Explanation:</u>
A covalent compound is formed when sharing of electrons takes place between the atoms forming a compound.
Carbon is the 6th element of the periodic table having electronic configuration of 
This element requires 4 electrons to complete its shell.
Oxygen is the 8th element of the periodic table having electronic configuration of 
This element requires 2 electrons to complete its shell.
So, in order to complete the octet of both the elements, 2 oxygen atoms are required for 1 carbon atom.
Hence, the total number of electrons that must be shared between carbon and oxygen atoms are 8.
<span>Water's polarity causes cohesion that pulls other water molecules up through a plant.</span>
A because if you multiple it, you will be moving the decimal one time
Answer:
A. Soaps react with ions in hard water to create a precipitate.
B. Soaps are both hydrophobic and hydrophilic.
D. Soaps should be weakly alkaline in solution.
Explanation:
A. Hard water contains <u>magnesium and calcium minerals</u> like calcium and magnesium carbonates, sulfates and bicarbonates. As soon as these minerals come in contact with soap their ions like Mg²⁺ & Ca²⁺ form precipitates.
B. Soap are both hydrophilic and hydrophobic. They reason why they exhibit both the properties is really important for their functionality. The hydrophobic part of soap makes interaction with oil/dust particles while the hydrophilic part makes interaction with water. When the cloth is rinsed the dirt/soap particles are removed from the dirty clothes thereby making them clean.
C. Soaps have alkaline pH i.e. more than 7 that is why they have bitter taste.
Hey there!
This is not reversible.
We know that this is a chemical change because heat is released (it burned brightly) and it formed a new substance (white powder).
Chemical changes are usually not reversible.
Since this is a chemical change, then this is not reversible.
Hope this helps!
