Answer:
1) Activation energy ( A )
2) Molar concentration of XZ(g) ( C )
Explanation:
XZ(g) ⇄ 2XZ
1) <em>Activation energy </em><em>I</em>s decreased by the addition of a catalyst
while Equilibrium constant will Increase and other options will still remain unaffected
2)<em>Molar concentration of X</em><em>Z</em><em>(g) </em>Is deceased when the volume of the reaction vessel is increased and equilibrium is reestablished at 298 K
while Number of molecules present will Increase
Answer;
1/3N(g)+H(g)—>1/3NH3(g)
<span>C. Jewelry tarnishing is an example of a chemical change.
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Chemical change is a process where a current substance changes or is made into a new type of substance<span>. Unlike the physical change, which is reversible. Chemical change stays into a its new form. Take for instance these -physical change- examples, making ice cubes. The process involves solidification or freezing where the water becomes ice or solid but when it melts back to its original or typical form with respect to temperature, it’s still water. When the paper is cut into pieces it isn’t burned or exposed to a stimuli that can trigger immediate change in its composition. It’s still the same. On the contrary, baking a cake involves these different compositions or substances –flour, egg, yeast and etc. that is baked to a cake, a newly formed unified substance of all the included ingredients. <span> </span></span>
<span>CHCl3 because there are more than two atoms in this molecule that are different. Hydrogen has a small electron cloud and occupies less space, where Cl has a larger electron cloud and occupies more space, this would make it different than the expected tetrahedron shape.</span>