Helium and nickel are examples of . These
are pure substances that can not be broken
down into simpler materials.

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

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What is the indicator of the number of ions in solution? the amount of conductivity the amount of precipitate the amount of solute added