Impaired drivers are one of the many risks drivers face on the Highway Transportation System. List 3 signs that a driver could be potentially impaired. Explain a strategy that you can use to keep yourself safe

Ahe-xe mixture containing a 0.75 mole fraction of helium is used for cooling electronics in an avionics application. at a temperature of 300 k and atmospheric pressure, calculate the mass fraction of helium and the mass density, molar concentration and molecular weight of the mixture. if the cooling capacity is 10 l, what is the mass of the coolant?