MCQ
All gases obey Charle's law at :
- ALow temperature and high pressure.
- BLow temperature and low pressure.
- CHigh temperature and high pressure.
- ✓High temperature and high pressure.
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$xBrO_3\,^-+ yCr^{+3} + zH_2O \to Br_2 + CrO_4 ^{-2} + H^+$
the coefficients $x, y, z$ are