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The external tank for the Space Shuttle carried 143,000 gallons of liquid oxygen. A gallon of liquid oxygen weighs 4.322 kg. NASA paid $0.16 per kg for liquid oxygen.

How much did NASA spend in total on liquid oxygen for the external Space Shuttle tank for one mission?

A. $987,232
B. $1,239,104
C. $2,478,208
D. $3,717,312

Answer :

The total weight of 143,000 gallons of liquid oxygen is approximately 619,936 kg, costing approximately $98,789.76 at a price of $0.16/kg.

Volume of Liquid Oxygen:

Gallons of liquid oxygen: 143,000 gallons

Weight Calculation:

Weight per gallon: 4.322 kg/gallon

Total weight of liquid oxygen: 143,000 gallons * 4.322 kg/gallon ≈ 619,936 kg

This means that the liquid oxygen has a total weight of approximately 619,936 kilograms.

Cost Calculation:

Price per kilogram: $0.16/kg

Total cost of the liquid oxygen: 619,936 kg * $0.16/kg ≈ $98,789.76

Therefore, the cost of the 143,000 gallons of liquid oxygen is approximately $98,789.76.
A is the best answer

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