hallieerussell hallieerussell

10-10-2017
Chemistry

contestada

what percentage do the elements hydrogen and helium account for in the universe? A. 100% B. 99.9% C. 98% D.99.8%

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briano9120 briano9120

10-10-2017

c. 98% this worlds atmostphere is mostly nitrogen tho

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cbc3001 cbc3001

10-10-2017

The percentage is 99.8% so D

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