Question

X is a reddish brown element when heated with dilute nitric acid gives out a colourless gas why which turns into a reddish brown gas on coming into contact with our blue solution of a substance that is also formed the crystals of substance that when heated gives out the reddish brown gas along with another gas a black Residue is left Behind name the substance X and write the equation for the reaction of the substance reacts with dilute nitric acid and name the gas why name the substance z and m​

Answer 1

Answer:

The reaction of a copper penny (minted pre-1982) and concentrated nitric acid (15 M) is shown. Red-brown nitrogen dioxide is generated and some of the copper dissolves to form a blue solution of copper(II) nitrate.

by the way reading of this question required just alot of time.....