Fuel tank tables are given in volumes whereas fuel is delivered by weight in tons. How is volume change represented by beginning and ending ullages converted into weight?
• Relationship between volume, density, and mass (weight) • Definition of density (mass per unit volume) and specific gravity (ratio to density of water) • How tank tables (in volume) are used with fuel characteristics to find weight in tons
• If you know how many cubic meters or barrels of fuel you have, what must you do to get tons, knowing that density is in units like tons per cubic meter? • How is specific gravity related to density, and does it by itself give you weight, or do you still need a density value with units? • Think about the basic formula connecting mass, density, and volume. Which math operation links them when density is given in proper units?
• Recall the formula: mass = density × volume (check the units to confirm). • Check which answer choices correctly use density with proper units (e.g., tons per cubic meter) rather than just a ratio. • Be sure you are using multiplication vs. division in a way that makes the units come out as tons, not volume or an inverse unit.
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