To obtain the same antifreeze protection requires 76g of propyleneglycol to repl

Question

To obtain the same antifreeze protection requires 76g of propyleneglycol to replace each 62g of ethylene glycol. Calculate themass of propylene glycol required to replace 3.0 gallons ofethylene glycol. The density of ethylene glycol is 1.12 g/mL.
Calculate the volume of propylene glycol, in gallons, neededto produce the same antifreeze protection as 3.00 gallons ofethylene glycol.
Calculate the volume of propylene glycol, in gallons, neededto produce the same antifreeze protection as 3.00 gallons ofethylene glycol.

Explanation / Answer

76g of propylene glycol to replace each 62g of ethyleneglycol 3.0 gallons = 3.785 L                   =3.785 * 1000 mL                  = 3785 mL Volume of ethylene glycol is = 3785 mL Density of ethylene glycol is = 1.12 g / mL i.e., 1 mL contains a weight of 1.12 g 3785 mL contains a weight of 3785 * 1.12 g                                             = 4239.2 g of ethylene glycol 76g of propylene glycol to replace each 62g of ethyleneglycol X g of propylene glycol to replace each 4239.2 g of ethyleneglycol X = ( 76 * 4239.2 ) / 62     = 5196.4387 g of propylene glycol So,the mass of propylene glycol required to replace 3.0gallons of ethylene glycol is 5196.4387 g ( = 5.1964 Kg ) So,the mass of propylene glycol required to replace 3.0gallons of ethylene glycol is 5196.4387 g ( = 5.1964 Kg )

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