The European Environment Agency publishes weekly values of NO2 concentrations for cities across Europe, which are reported in μg m-3 (micrograms per cubic meter). These concentration values can be converted to fractional abundance by using the following equation:Fractional abundance = (Concentration (μg m-3) x molar volume (m3 mol-1)) / molecular mass (g mol-1).The molecular mass of NO2 is 44 g mol-1. The molar volume of air at 1 atm is 0.02445 m3 mol.The NO2 concentration measured in Lyon, France, in the third week of February 2020 was 57.7 μg m-3.- What is the fractional abundance of NO2 in the air? Show your calculations.- Express this value in ppb. Show your calculations.