First determine the number of moles of O2
This is easily done using the universal gas equation:
PV = nRT
n = PV/RT
n = 7.53 × 10.0 / 0.0821 × 485
n = 1.89 mol of O2
1mol of O2 contains 6.022 × 1023
molecules
1.89 mol of O2 contains 1.89 × 6.022 ×
1023
= 1.14 ×1024 molecules of O2
Part A How many molecules of O2 are contained in a 10.0 L tank at 7.53...
Part A How many moles of Rn are contained in a 4.25 L tank at 155°C and 2.80 atm? O 0.289 moles O 0.339 moles O 0.455 moles 1.00 moles 2.51 moles Submit Request Answer Provide Feedback
Gas is contained in a 10.0 L vessel at a temperature of 40.0°C and a pressure of 10.0 atm. (a) Determine the number of moles of gas in the vessel. (b) How many molecules of gas are in the vessel? (a) 3.89 mol; (b) 2.34 * 1022 molecules (a) 2.19 mol; (b) 2.34 x 1024 molecules (a) 3.89 mol; (b) 2.34 x 1024 molecules (a) 3.89 mol; (b) 5.24 x 1024 molecules
Question 21 (1 point) Gas is contained in a 10.0 L vessel at a temperature of 40.0° C and a pressure of 10.0 atm. (a) Determine the number of moles of gas in the vessel. (b) How many molecules of gas are in the vessel? O(a) 3.89 mol; (b) 2.34 * 1022 molecules O(a) 3.89 mol; (b) 2.34 x 1024 molecules (a) 3.89 mol; (b) 5.24 x 1024 molecules (a) 2.19 mol; (b) 2.34 x 1024 molecules
20. How many gaseous particles are contained in 5.0 liters of gas at 0.96 atm and 285 K? A) 8.4 x 1026 B) 5.5 x 1024 C) 1.3 x 1023 D) 8.1 x 1024 E) 4.3 x 1023
Part A How many moles of C7H16 contain 9.25 x 1024 molecules of CyH16 ? 46.2 moles CH16 34.9 moles C-H16 28.6 moles C7H16 65.1 moles C-H16 15.4 moles CH16 Submit Request Answer Provide Feedback
How many moles of Ne are contained in a 3.50 L tank at 155ºC and 2.80 atm? 2.51 moles 1.00 moles 0.455 moles O 0.289 moles O 0.279 moles
How many moles of Ne are contained in a 3.50 L tank at 155°C and 2.80 atm? 2.51 moles O 1.00 moles O 0.455 moles 0.289 moles O 0.279 moles
A 15.0L flask of CH4 is at 30 °C and 0.965 atm. How many molecules of methane are in the flask? Ο 3.50 x 1023 Ο 2.88 x 1022 ο Ο 1.44 x 1023 Ο 3.54 x 1024 Ο 1.77 x 1025
2. How many moles of gas are contained in a scuba diver's 12.6-L tank filled with 3422 psi of air А) 1760 moles B) 2.10x10' moles C) 120. moles D) 1430 moles at 25 °C? (1 atm - 14.7 psi) Answer
34. How many molecules of O2 are there in 6.8 mol of O2? a. 218 b. 1.1 x 10-23 C. 4.1 x 1024 d. 4.71 e. 8.9 x 1022