meladyramos7 meladyramos7 10-11-2020 Chemistry contestada ) A tank contains helium gas at 490 mmHg, nitrogen gas at 0.75 atm, and neon at 520 torr. What is the total pressure in atm? A) 2.1 atm B) 0.55 atm C) 1.0 × 103 atm D) 1.5 atm