The resource that the scientist is most likely working with is ores. Copper is typically extracted from its ore using different methods that highly depend on the nature and composition of the ore. Examples of copper ores are sulphide, silicate, carbonate, and sulphate ores. Copper extracted from these ores still undergo further processing and purification.
Answer:
Exothermic reaction
Explanation:
Exothermic reaction is a reaction in which energy is evolved from the reaction to the surroundings
Answer:
C; ΔSuniv>0
Explanation:
In this question, we want to select which of the options must be true.
What we should understand is that for a process to be spontaneous, the change in entropy must be greater than 0 i.e the change in entropy must be positive.
Looking at the options we have; option C is the correct answer.
Option B looks correct but it is wrong. This is because if change in universal entropy is greater than zero, then change in Gibbs free energy must be less than zero for spontaneity to occur
The answer is D because there is no forces of attraction or repulsion between gas particles .
Answer:
the rust formed because of the water sitting in sied a metal bowl for long time but they can fix this if they get filters
Explanation:
