1)why we use dilute acid in the preparation of H2 gas 2)why don't use HNO2, rather than use HCl and H2SO4 in the H2 gas preparation.​

answer; natural resources;

the answer is 1 i believe

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.