Question

This element is dominant in the emission spectra of many subtypes of both WN and WC types of Wolf–Rayet stars. This element is the most abundant (20[1])reactant in a reaction with rate proportional to the forty-first power of temperature that yields (20[1])the Hoyle state. This element’s stellar (20[1])mass fraction is denoted “capital Y.” Stars enter the horizontal branch after (20[1])this element’s runaway (20[1])(*) “flash.” (10[6])This (10[2])is the (10[3])heaviest (10[3])non-negligible (10[3])element present in population (10[1])III (“three”) stars because they formed from primordial gas. This element was discovered by observing the Sun’s chromosphere during (10[1])a solar eclipse. (10[1])Three atoms of this element fuse into carbon-12 (10[1])in the triple-alpha (10[1])process. For 10 (10[1])points, name this second-lightest (10[1])element. (10[1])■END■ (10[6])

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