<span>This problem is solved by the law of effusion, which states that the rate of effusion is ~ 1/sqrt(molecular weight). Calculate the molecular weights of the different gases:
HBr = 80.91 g/mol
NO2 = 46.0055 g/mol
C2H6 = 30.07 g/mol
Thus, the approximate relative rates are HBr ~ 0.112, NO2 = 0.1474 and C2H6 = 0.1824.
Answer: C2H6 effuses fastest.</span>
Usually an emotional reaction to stress is like crying, and the opposite of emotional is physical. So something physical that someone does in reaction to stress could be fighting physically, or hitting something.
Information on the internet might help
1. diaphragm 2. the lungs 3a. carbon dioxide 3b. ciculatory system 4. the respitory stsem. 5. Tissues 6. capilaries 7. inhale
8. body systems 9. blood cells. 10. organs 11. the skeletal system. 12. arteries 13. oxygen 14. muscular system. 15. Alveoli 16. exhale 17. the heart. 18. veins
