6) You have a natural gas furnace in your home that used 78,500 cubic feet of natural gas for heating last winter. Your neighbor has a furnace that burns heating oil, and used 516 gallons of heating oil last winter. You can convert the natural gas and heating oil consumption data into Btu to determine which home used more energy for heating. Ø Natural gas BTU: 1,028 Btu per cubic foot Ø Oil BTU: 138,590 Btu per gallon ( I got this so far: Natural Gas - 78,500 x 1028 btu = 80,698,000 but do I round it and write it as 8.07 x 10^7? oil : 516 x 138,590 = 71,512,440 or 516 x (138,590 ^ 1) = 71,512,440 can I also write this as 7.15 x 10^7?)_______________________________________________________________________________
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16) You have a natural gas furnace in your home that used 78,500 cubic feet of natural gas for heating
last winter. Your neighbor has a furnace that burns heating oil, and used 516 gallons of heating oil last winter. You can convert the natural gas and heating oil consumption data into Btu to determine which home used more energy for heating.
Ø Natural gas BTU: 1,028 Btu per cubic foot
Ø Oil BTU: 138,590 Btu per gallon
( I got this so far: Natural Gas - 78,500 x 1028 btu = 80,698,000 but do I round it and write it as 8.07 x 10^7?
oil : 516 x 138,590 = 71,512,440 or 516 x (138,590 ^ 1) = 71,512,440
can I also write this as 7.15 x 10^7?)_______________________________________________________________________________
17) You need a new furnace for your home, and you are comparing systems that use natural gas and
heating oil. One factor to consider is the cost of the fuels. You can compare the price of the fuels on
an equal basis by dividing the price per unit of the fuels by the Btu content per unit of the fuels to
get a price per million Btu.
Assume Natural gas price = $10.50 per thousand cubic feet and oil price = $3.00 per gallon
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