Hydrogen is collected over water at 22 °C and a barometer reading of 740 mmHg. If 300. mL of hydroge — Gases Chemistry Question
Question
Hydrogen is collected over water at 22 °C and a barometer reading of 740 mmHg. If 300. mL of hydrogen is collected, which expression will give the volume of dry hydrogen at the same temperature and pressure?
A.✓ Correct
300 mL × (740 mmHg - 20 mmHg) / 740 mmHg
B.
300 mL × (740 mmHg + 20 mmHg) / 740 mmHg
C.
300 mL × 740 mmHg / (740 mmHg - 20 mmHg)
D.
300 mL × 740 mmHg / (740 mmHg + 20 mmHg)
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