Answer: is C
Explanation:
Both the atomic mass and the atomic number increase from left to right
Answer:
negative
Explanation:
Entropy is a measure of the "disorder" in a system.
In this reaction, the amount of disorder decreases. This is because one gas molecule (NH₃) has more order than two gas molecules (N₂ and H₂). Therefore, the entropy change should be negative.
Answer:
no no no who are these some look good but are black what is this
Answer:
Iodine
Explanation:
It's in the same group as chlorine.
In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed. The distinction between physical and chemical change is not clear cut.
