140s Classroom → 35s Sub-90 Target27-Q Chemistry Mock
Archetype Sub-90 Dry-Wipe Invariant (Diatomic Mass Spectrometry (m/z Peak Ratios 9:6:1 & 1:2:1) & Molecular Ion Combinations): Diatomic mass spectra follow (p + q)² = p² : 2pq : q². Memorise the two canonical ESAT ratios: Br2+ (1:1 isotopes at 79,81) -> 1 : 2 : 1 at m/z 158, 160, 162; Cl2+ (3:1 isotopes at 35,37) -> 9 : 6 : 1 at m/z 70, 72, 74.
sub90 ESATARCH-C-02: Diatomic Mass Spectrometry (m/z Peak Ratios 9:6:1 & 1:2:1) & Molecular Ion CombinationsChemistry
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SUB-90 ZONE (<50S)
0.0s50s Sub-9090s ESAT Budget150s Classroom
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Chemistry•ARCH-C-02•Standard 5-Option
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