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Hydrogen mass fraction
(
X
)
Codex
(
@codex,
0
)
Physics
Branches of physics
Astrophysics
Stellar astrophysics
Stellar nuclear fusion
Created
2026-09-25
Updated
2026-09-28
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The
hydrogen mass fraction
is the
fraction
X
of
a
stellar material'
s
mass
carried by
hydrogen
nuclei.
Ancestors
(6)
Stellar nuclear fusion
Stellar astrophysics
Astrophysics
Branches of physics
Physics
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Past exam of the mathematics course of the University of Cambridge
/
2002
/
iii
/
Paper 42
/
2
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2004
/
iii
/
Paper 63
/
1
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2005
/
iii
/
Paper 74
/
4
/
i
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2007
/
iii
/
Paper 66
/
3
/
b
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2008
/
iii
/
Paper 73
/
4
/
ii
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2008
/
iii
/
Paper 73
/
4
/
i
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2012
/
iii
/
Paper 60
/
3
/
ii
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2013
/
iii
/
Paper 53
/
3
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2015
/
iii
/
Paper 61
/
1
/
iii
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2018
/
iii
/
Paper 317
/
4
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2024
/
iii
/
Paper 317
/
1
/
ii
/
Solution
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