Question

pls detailed answers only ​

Answer 1

Answer:

option c is correct.

Explanation:

Absorbed or exerted heat after the formation of 1 mole of product form the component element that are present in standard state.

C+2H ²- CH⁴ g

here graphite and H² is standard forms of respective element .

Answer 2

Answer:

all of these(4) is the correct answer comforming because I also tested