Answer:
Explanation:
The dissolution of salt in water is basically a physical process and the law of conservation of mass which states that mass can neither be created nor destroyed applies. The mass of each component before dissolution will be same after dissolution.
When one pound of salt is dissolved in 20 pounds of water, the resulting solution will weigh 1+20 pounds.
mass of solution = mass of salt + mass of water
= 1+20
mass of solution = 21 pounds
Have a nice day
B for sure, considering iron oxide is just fancy for rust.
I believe you mean NaCI*, (sodium chloride) . Sodium Chloride is not an element, it is known as an ionic compound, reason being because it forms an ionic bond with Na and CI.
