Answer:
No
Explanation:
The equation does not obey the law of conservation of mass by not accounting to the total number of Chlorine in the products.
Law of conservation of mass states that in ordinary chemical reactions, matter can neither be created nor destroyed but can be converted from one form to another.
The equation presented was
CuCl₂ + Na₂S → CuS + NaCl
1. The total number of copper in the reactant is equal to number of Cu in product
2. Numbe of Chlorine in the reactant is 2 while in the product is just 1. Not accounted for.
3. Number of sodium on the reactant is not equal to number of sodium on the product I.e 2 on the reactant and just 1 on the product.
4. Number of sulfur on the reactant is equal to number of sodium on the product.
Correct chemical equation
CuCl₂ + Na₂S → CuS + 2NaCl
Answer:
There are three covalent bonds existing between NH3. .
I think the correct answer from the choices listed above is option B. The formation of frost on a cold windowpane is an example of condensation. This process involves the phase change from the vapor phase to the liquid phase.
Answer:
double replacement
Explanation:
The reaction equation is given as:
Pb(NO₃)₂ + 2KI → PbI₂ + KNO₃
This reaction is a double displacement reaction.
In this form of reaction, there is an actual exchange of partners to form new compounds.
AB + CD → AD + CD
One of the following condition serves as driving force for the reaction:
- formation of an insoluble compound
- formation of water or any other non-ionizing compound
- liberation of a gaseous product.
