NAEP Science Grade 12

Category - Science

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Which of the following is true for chemical compounds that have been detected elsewhere in the universe?

They have a greater average density than the same compounds found on Earth.
They are composed of the same elements that are found on Earth.
They are less reactive chemically than the same compounds found on Earth.
Those with the greatest molar masses are found furthest away from our solar system.

Explanation

Answer: B - They are composed of the same elements that are found on Earth.

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