What is the concentration in parts per million of a solution containing 333 grams of NaNO3 in 700 grams of H2O?

In 2002, the rare earth elements mine in mountain pass, california was closed because

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

Nonpoint source pollution is difficult to control because it