Answer:
c
Explanation:
because the left side of reactant is take more time to make a product than the first
Answer:
-1104 kJ/mol
Explanation:
The change in the enthalpy of a reaction is equal to the difference between: the sum of the enthalpy changes of the bonds broken and the sum of the enthalpy changes of the bonds formed.
The bonds broken correspond to the cleavage of bonds of the reactants, the bonds formed correspond to the bonds of the products:
- we only break oxygen O=O bond, since carbon is not bonded to anything;
- we form two C=O bonds in carbon dioxide.
Therefore, the enthalpy change is calculated by:
Answer:
When the surface of a mineral reflects light in manner that is similar to a metal, the mineral is said to have a <u>metallic luster.</u>
Explanation:
A mineral is a pure, naturally occurring, solid chemical substance. They have a crystalline structure and a definite chemical composition.
Another physical property that can be used to define a mineral is luster. It can be of two types: metallic luster and non-metallic luster.
A mineral is said to have a metallic luster, if it has high reflectivity like a metal. Examples : pyrite, galena.
Answer:
H^+(aq) + OH^-(aq) -------> H2O(l)
Explanation:
We must first write the molecular reaction equation as follows;
HNO3(aq) + NaOH(aq) ------>NaNO3(aq) + H2O(l)
The complete ionic equation is;
H^+(aq) + NO3^-(aq) + Na^+(aq) + OH^-(aq) -------> Na^+(aq) + NO3^-(aq) + H2O(l)
The net ionic equation therefore is;
H^+(aq) + OH^-(aq) -------> H2O(l)
