Cell Membrane
The cell membrane also protects and supports the cell. Found in plant cells but not animal cells. This is the outer most layer in the plant cell. It is stiff, rigid and non living, and mad of cellulose.
Answer:
First Option: B)
Second Option: C)
<em>The pictures below will show the answers. The first picture is the first option, and the second picture is the second option.</em>
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Magnesium oxide is an ionic compound with a very high melting point and which requires a large amount of energy for melting.
<h3>What are ionic compounds?</h3>
Ionic compounds are compounds which are formed between oppositely charged ions which are held together by electrostatic forces of attraction between the oppositely charged ions.
Ionic compounds are formed when metal atoms donate electrons to non-metals atoms to form ions.
Magnesium oxide is an ionic compound.
The nature of bonding is ionic bonding.
It has a crystalline lattice structure.
The forces of attraction is electrostatic forces of attraction.
It has a high melting point of 2,852 °C, and thus requires a large amount of energy go melting to occur.
Therefore, magnesium oxide is an ionic compound which requires a large amount of energy for melting.
Learn more about ionic compounds at: brainly.com/question/11638999
There is no energy available to transfer to the surroundings when bonds break as it's an endothermic reaction.
<h3>What is Endothermic reaction?</h3>
This is the type of reaction in which heat is absorbed from the surrounding and is involved in the breaking of bonds.
There is no energy available to transfer to the surroundings when bonds break because it's needed in the conversion of the reactant to product in a chemical reaction.
Read more about Endothermic reaction here brainly.com/question/6506846
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The total mass means that you need to add up all three diamonds' mass. So the calculation equation is 14.2+8.73+0.912 = 23.842 g.
