Helium burns in the core of a horizontal branch star via the ________ and produces ________.
A) triple-alpha reaction; carbon
B) proton-proton chain; lithium
C) triple-alpha reaction; oxygen
D) proton-proton chain; iron
E) proton-proton chain; calcium

Question

Quizplus · Accepted Answer

Helium burns in the core of a horizontal branch star via the triple-alpha reaction, which fuses three helium nuclei to form carbon.

Helium Burns in the Core of a Horizontal Branch Star