the first stars to form in the universe were population 3 stars (yet to be obser

Question

the first stars to form in the universe were population 3 stars (yet to be observed). It is believed that during the big bang theoryonly H, He and Li nuclei were produced. The number of Lithiumnuclei produced was around 1.6x10-10 of the total,a very tiny fraction. The fraction of helium produced was 0.075 ofthe total number. Helium nuclei are 4 times more massive thanhydrogen and lithium is 7 times more massive. What is themetalicity Z of the gas population 3 stars formed from? recall that Z=(mass of all elements heavier than He)/(mass of allelements) Z=(mass of all elements heavier than He)/(mass of allelements)

Explanation / Answer

The answer is on this link http://www.cambridge.org/resources/0521546230/276_p14-18.pdf It is exmaple 1.1 , it won't let me post the answer in thebox.

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