Answer:
Concentrated hydrochloric acid
Explanation:
The solution turns from its original pink colour to a dark rich blue.

Arrow head shows the direction of products formed in a reaction. so we can say that it denotes the direction of the chemical reaction. I.e From Reactant to Product.
so, the correct choice is B
The mass percentage would be reduced but not as much as if it were a complete reaction ヽ༼ຈل͜ຈ༽ノ︵┻━┻ mark brainliest please
Answer:
It works because of the significant principle of piezoelectricity
Explanation:
Explanation:
Fe2o3+ 3co ---------. 2fe + 3co2