27/ Mixture of gases contain 5.60 g of oxygen gas, 2.75 g of neon, and 1.24 g of helium. What is g mole fraction of neon
Posted: Wed May 18, 2022 12:52 pm
- 27 Mixture Of Gases Contain 5 60 G Of Oxygen Gas 2 75 G Of Neon And 1 24 G Of Helium What Is G Mole Fraction Of Neon 1 (113.02 KiB) Viewed 45 times
27/ Mixture of gases contain 5.60 g of oxygen gas, 2.75 g of neon, and 1.24 g of helium. What is g mole fraction of neon in this mixture? A) 0.1363 B) 0.2868 C) 0.6211 D) 0.2726 28. Certain reaction produced 1.65 L of hydrogen gas, which was collected over water. Atmospheric pressure was 105 kPa at the temperature of 25.0 °C. What was pressure of "dry" hydrogen gas if water vapor pressure at this temperature is 23.8 mmHg? (760 mmHg = 101.325 kPa) A) 764 mmHg B) 81.2 kPa C) 811 mmHg D) 129 kPa 29. Mixture of 1.20 moles of helium, 2.10 moles nitrogen and 46.0 g of argon in closed container exerts pressure of 1.7 atm. What is partial pressure of helium in this container? A) 0.685 atm B) 0.457 atm C) 1.23 atm D) 1.68 atm 30. Magnesium metal react with hydrochloric acid to produce magnesium chloride and hydrogen gas. How many grams of magnesium must react with hydrochloric acid to produce 2.30 L of hydrogen gas at 1.10 atm and 22.0°C? A) 2.54 g B) 22.1 g 2 C) 678 g D) 34.1 g 3 Written response questions, 5 pts/each: 31. A compound is found to be 36.85% N and 63.15% O by mass. 3.26 g of this compound occupy 778 mL at 0.00°C and 775 mm Hg. Determine: a. empirical formula of the compound using its percent composition given. Povz