<h3>
Answer:</h3>
D. Allotrope
<h3>
Explanation:</h3>
What is allotropy?
- Allotropy refers to the existence of an element in more than one physical forms.
- Allotropes are therefore different forms of an element with different physical properties or chemical arrangements.
What are some examples of allotropes?
- Examples of elements that exhibit allotropy include, sulfur and carbon.
- Allotropes of carbon are diamond and graphite.
- Allotropes of sulfur are monoclinic sulfur and rhombic sulfur.
Answer:
Option b, The change in free energy of the reaction (ΔG)
Explanation:
Gibbs free energy is a measure of amount of usable energy in the system.
It is related with enthalpy (H), entropy (S) and temprature (T) as:
G = H - TS
The Gibbs free energy change (ΔG) provide spontaneity of a chemical reaction.
If ΔG is negative, then reaction is spontaneous that means reaction is moving towards forward direction.
If ΔG is positive, then reaction is non-spontaneous that means reaction is moving in backward direction.
If ΔG is zero, then reaction is at equilibrium.
Change in enthalpy only gives informtion about heat involed in a chemical reaction, it does not give information about direction of the reaction.
So, among the given options, option b is correct.
You'll see that the chocolate chips<span> are definitely </span>melted<span>. In fact, they won't re-solidify completely for some time afterward. Part of the reason the </span>chocolate chips<span> retain their shape when </span>melted<span> is that they are partially insulated from the heat of the oven by the cookie dough.
Anna</span>
The heat from your hand would be absorbed by the (assumed) colder flask, since an endothermic reaction means that the reaction requires an absorption of heat as opposed to an exothermic reaction, which releases heat.
CrO as we need to find the empirical formula (simplest formula) not molecular formula
