Interpretation:
The amount of polychlorinated biphenyls (PCBs) present in grams in a
Concept Introduction:
Polychlorinated biphenyls (PCBs) are a group of synthesized chemicals. They can be oily or solid having clear to yellow colour with no taste or smell. They form very stable mixtures at extreme temperature and pressure. Every human body is contaminated by
Since they are present in very small traces in the human body, their amount is expressed by parts per billion units (ppb). The parts per billion is the ratio of the mass of solute and mass of solution times
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Chapter 11 Solutions
INTRO TO CHEMISTRY EBK ACCESS CARD >I<
- A solution is defined as a homogeneous mixture. Is a small sample of air a solution? Is the atmosphere a solution?arrow_forwardCalcium carbonate, CaCO3, can be obtained in a very pure state. Standard solutions of calcium ion are usually prepared by dissolving calcium carbonate in acid. What mass of CaCO3 should be taken to prepare 500. mL of 0.0200 M calcium ion solution?arrow_forwardA student weighs out a 4.80-g sample of aluminum bromide, transfers it to a 100-mL volumetric flask, adds enough water to dissolve it, and then adds water to the 100-mL mark. What is the molarity of aluminum bromide in the resulting solution?arrow_forward
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