Write a balanced equation for the decomposition reaction described, using the smallest possible integer coefficients. When ammonium chloride decomposes, ammonia and hydrochloric acid are formed.

Idon’t know how to solve this question

Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat

Air can be considered a mixture. which statement does not explain why?