molar 7. How many grams of CO 28.01 /mol) must be bumed to produce 225 kJ of heat urma 2006 +020 200260 AH = -566 kJ c) 2238 ite a) 0.398 8 b) 0.795 g c) 2.52 g d) 11.1 g 3. Calculate the mass of excess reactant remaining after 4.50 mol of LHCO (67.96 R/mol) and 8.50 mol of H2504 (98.08 g/mol) reacted according to the equation shown below. 2LHCO3 + H2SO4 - Li2SO4 + 2H20 + 2002 e)...
Please help with these two 1. A flask is filled with 1.08 moles of a gas at 20.7 K and 646.8 mm Hg. The flask is then opened and an additional 1.33 moles are added. The temperature of the flask is then changed to 272.4 K. What is the pressure (in atm) of the flask under these final conditions? 2. The density of a gas is 4.22 g/L at a pressure of 1.77 atm and a temperature of 14.66 °C. What...
QUESTION 2 What amount (in moles) of a gas is contained in 40.4 L at-82.4 °C with a pressure of 527.4 mm Hg? QUESTION 3 A flask is filled with 1.03 moles of a gas at 13.4 K and 618.9 mm Hg. The flask is then opened and an additional 1.84 moles are added. The temperature of the flask is then changed to 172.9 K. What is the pressure (in atm) of the flask under these final conditions? QUESTION 4...
6. a) How many moles of gas are in S L volume at 80 er at standard pressure of 1.01x10s Pa. b) calculate how many molecu temperature raise to 300 and volume is same, what is the pressure of the gas shoul d be? (k = 1.38x10 23」/K, R-8.31/ / mol . K.)
4) A 1.000 L flask is charged with 0.375 moles of gaseous N2O4 which is in equilibrium with gaseous NO2 with ΔH = 58.02 kJ/mol and ΔS = 176.6 J/(mol*K). What is the pressure in the flask at 300. K? (15 pts) (Hint – Solve for G, solve for K, solve equil. concentrations, and then how many moles of gas are there?)
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
If an ideal gas has a pressure of 7.29 atm, a temperature of 415 K, and a volume of 53.21 L, how many moles of gas are in the sample? mol л
How many moles of gas are in a gas sample occupying 0.73799999999999999 L at 135 mm Hg and 30° C? A 0.0052700000000000004 mol B 40.5 mol C 190 mol D 0.00043300000000000001 mol E 4.0099999999999998 mol
10) How many moles of carbon atoms are there in 0.500 mole of CaH-2 A) 0.500 moles B) 1.00 moles C) 3.00 moles D) 6.02 x 1023 moles E) 4.00 moles 11) How many grams of FerO3 are there in 0.500 mole of FeyOh A) 79.9 g B) 35.9 g C) 63.8 g D) 51.9 g E) 160. g 12) In the kinetic molecular theory of gas behavior, particles of a gas tend to move between them are and collisions...
A 0.218 mol sample of Ar gas is contained in a 7.00 L flask at room temperature and pressure. What is the density of the gas, in grams/liter, under these conditions?