The concentrations in mol/dm³ would be 0.002, 0.04, 0.007, and 0.01 respectively.
Concentration in mol/dm3
Since 1 dm³ of blood is taken as containing 1 dm³ of water, it means that the concentration levels are in mg/dm³.
Thus, we are tasked with the job of converting from mg/dm³ to mol/dm³.
Recall that: mole = mass in grams/molar mass in gram/mole
Molar mass of ethanol = 46.07 g/mol
80 mg of ethanol = 0.08 g = 0.08/46.07 = 0.002 mol
200 mg of ethanol = 0.2 g - 0.2/46.07 = 0.004 mol
300 mg = 0.3 g = 0.3/46.07 = 0.007 mol
500 mg = 0.5 g = 0.5/46.07 = 0.01 mol
Therefore, the respective concentrations in mol/dm³ would be 0.002, 0.04, 0.007, and 0.01 respectively.
More on concentrations can be found here: https://brainly.com/question/13872928
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