a)If 50.00mL of propylene glycol has am ass of 51.80g, what is its density in SI units (kg/m^3).
b) To obtain the same antifreeze protection requires 76 g of propylene glycol to replace 62 g of ethylene glycol. What is the mass required to replace 1.00 gallon of ethylene glycol (1 quart = 0.9463 L)?
c) What is the volume of propylene glycol, in gallons, needed to achieve the same antifreeze protection to replace 1.00 gallon of ethylene glycol?