Question: i dont understand where the density came from or how to determine it. thank you 5. (5 min) A standard nickel solution with a concentration

i dont understand where the density came from or how to determine it. thank you

5. (5 min) A standard nickel solution with a concentration of 2.155ppm was prepared at 25C. What would the concentration of the solution be at 15C ? What is the percent change in the concentration? dc=dc0.997047g/mL2.155ppm=0.999102g/mLcc=0.997047g/mL(0.999102)(2.155)=2.159ppm

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