Question

The composition of universe is approximately 90% hydrogen and 10% helium, by mass. It represented that

Multiple Choice Questions
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Answer 1

Explanation:

the the composition ofuniverse is approximately 90%hydrogen and 10% helium by weight. the the composition represent thatthere are 18 hydrogen atomsin the universe peratom of helium

Answer 2

Answer:

your answer is option B. .....