if the average concentration of PCBs in the body tissue of a human is 4.0 ppm, what mass of the PCB is present in a 64 kg person? is this a significant amount in regards to the health of the person?
What is the concentration of a solution of sodium nitrate that contains 35.0 g of the solute in a 1.5 L solution?
A typical household ammonia solution has a concentration o 1.24 M. What volume of this solution would contain .500 mol of NH3? What volume of this solution would contain 10.0 g of NH3?
What volume of concentrated 17.8 M sulfuric acid would a laboratory technician need to make 2.00 L of a .200 mol/L solution by dilution of the original, concentrated solution?
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See your duplicate above.
1 answer