The one with higher mass has a higher density because it fits more mass into the same amount of space (volume).
Answer:

Explanation:
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In this case, considering the Gay-Lussac's law which describes the pressure-temperature behavior as a directly proportional relationship by holding the volume as constant, we write:

Whereas solving for the final temperature T2, we get:

Thus, we plug in the given data (temperature in Kelvins) to obtain:

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Answer:
It is always twice the value of the actual yield.
Explanation: