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
The Answer Is C, Hope It Helps
In this question, XB3(aq) is an ionic compound which will have the releasing of 3 B⁻ ions ions in water for every molecule of XB3 that dissolves.
XB3(s) --> X+(aq) + 3 B⁻(aq)
[B⁻] = 0.22 mol XB3/1L × 3 mol B⁻ / 1 mol XB3 = 0.66 M
The answer to this question is [B⁻] = 0.66 M
