You receive the record of cylinder weights,...

Question 1 of 270705eccef9ebacbc34ba4d4648d

You receive the record of cylinder weights, shown in the illustration, at the annual servicing of your ship's CO₂ system. Which pair of CO₂ cylinders requires recharging? See illustration SF-0014.

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Question 1 of 27070

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🔍 Key Concepts

• Tare weight vs. gross weight on a CO₂ bottle and how to find the actual CO₂ charge by subtraction • Typical rule that a CO₂ cylinder must be recharged if its contents are reduced by more than 10% of the required charge • Comparing all cylinders in the table to see which ones have the lowest CO₂ contents

💭 Think About

• How do you calculate the actual CO₂ charge in each cylinder using the tare and gross weights shown? • If you assume the intended (full) CO₂ charge is about the same as the best‑filled bottle, which cylinders are more than 10% below that value? • Among the answer choices, which pair includes all cylinders that fall below the acceptable limit and does not include any that are within limits?

✅ Before You Answer

• For every cylinder, compute CO₂ charge = gross weight − tare weight and write the numbers down. • Identify what you will treat as the normal full charge (look at the ones around 99–100 lb of contents). • Mark each cylinder whose contents are more than 10% less than that normal charge; then see which answer choice lists exactly that pair.