Answer:
B. A chemical change occurred which caused the liquid's physical properties to change.
Explanation:
The reduction of the temperature of the system meant that the reaction absorbed heat energy from it. This shows that a chemical reaction was in progress. New products were formed, and this is proved by the change in the color to blue.
<span>What is the atomic number of the first element to start filling an "f" sub-level?
the answer is 58.
I hope this helps :)</span>
Answer:
entropy of reaction = 572-718= -146J/mol-k.
Explanation:
entropy of a reaction = entropy of product - entropy of reactant.
entropy of product = 2×entropy of SO2+2×entropy of NiO
=
=572 J/mol-k
entropy of reactant = 2×entropy if NiS+3×entropy of O2
=
=718 J/mol-k
therefore entropy of reaction = 572-718= -146J/mol-k.
There can be following constitutional isomers of a compound with molecular formula C5H10
Constitutional isomers are those compounds which differ in structure due to difference in bonding and position of atoms