Scrieti reactia de substitutie a metanului (CH4

) cu Br2

Motivation cannot be developed with practice; a person either possesses it or they do not.

Miner's coal distributors does not mine coal itself, nor does it even store or handle the coal. instead, miner's solicits orders for low sulfur coal from other firms, then purchases the required amount from suppliers and directs them to ship the coal to its customers. what is miner's

What causes the appearance of lines in a emission spectrum