The answer is C. They lower the activation energy of an elementary step of a reaction
This makes the reaction rate to increase since less energy is required to make a reaction occur.
Answer:
C) 2 H2(g) + O2 (g) 2 H2O (l) AH° = -571.6
kJ/mol
Explanation:
The magnitude of heat released in an exothermic reaction is shown by the magnitude of the change in enthalpy.
The more negative the enthalpy change of the reaction, the more the heat released by the process.
Hence, 2 H2(g) + O2 (g) 2 H2O (l) AH° = -571.6
kJ/mol has the most negative value of enthalpy change hence the greatest amount of heat is released in this reaction.
Answer:
The reactants Cu(SO)₄ and Na₂(NO)₃ are reacting to produce Na₂(SO)₄ and Cu(NO)₃
Explanation:
When we describe a reaction by a chemical reaction, we put the reactants in on the side and the other side the products. A simple arrow (→) represents an irreversible reaction, the double arrow (⇄) represents a reversible reaction (the products are forming the reactants too).
So, for the reaction given, it's irreversible, and the reactants Cu(SO)₄ and Na₂(NO)₃ are reacting to produce Na₂(SO)₄ and Cu(NO)₃.
The answer is 20 because in an atom no of protons equal no of electrons
Explanation:
a brittle, High melting solid : option B (MgCl2).
1) H2S
2) H2O
3) I2
weakest to strongest.
hope this helps you.