What mass of O_2 is required to produce 5.00 L NO_2 at 305 K and 752 mm Hg? (R =

Question

What mass of O_2 is required to produce 5.00 L NO_2 at 305 K and 752 mm Hg? (R = 0.08206 L atm/mol K) 2 NO(g) + O_2(g) rightarrow 2 NO_2(g) a. 0.198 g b. 1.58 g c. 3.16 g d. 5.00 g e. 6.33 g A flexible vessel contains 45 L of gas where the pressure is 1.6 atm. What will the volume be when the gas is compressed to a pressure of 0.70 atm, the temperature remaining constant? a. 0.01 L b. 20 L c. 45 L d. 0.051 L e. 103 L Equal volumes of propane, C_3H_8, and carbon monoxide, CO, at the same temperature and pressure have the same. a. chemical properties. b. number of atoms. c. average molecular speed. d. density. e. number of molecules. The pressure of O_2 in a 15.0 L flask is 322 mm Hg at 44 degree C. What mass of O_2 is in the flask? (R = 0.08206 L atm/mol K) a. 0.244 g b. 5.80 g c. 7.82 g d. 15.2 g e. 56.3 g

Explanation / Answer

41) answer :c) 3.16 g

volume of NO2 = 5.00 L

pressure = 752 mmHg = 0.989 atm

temperature = 305 K

P V = n R T

0.989 x 5 = n x 0.0821 x 305

n = 0.1975 mol

moles of NO2 = 0.1975

moles of O2 = 0.1975 / 2 = 0.0988 mol

mass of O2 = 3.16 g

42 )

answer : 103 L

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.