Please help me find this answer

In numbering carbon atoms in the parent chain of a hydrocarbon, why would you number from right to left, rather than left to right

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

Which characteristics can be used to differentiate star systems? check all that apply.