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[1/1000]/34.00 x 1000= 0.029 moles?
What is concentration? It could be percent by weight, percent by volume, molarity, molality, or something else.Other concentration units are more involved. I'll leave them out for now. Let someone who cares ask about them.
how do you work out the number of moles of a substance that has a concentration of 10 mg/L. Do you have to divide 10mg/L by the molar mass?