Question

7 What is the molarity of sodium ions in 4.57 L of a 0847 MNasP solution? a 0.847 b 387 c o1ss d. 254 s When 2s0 mL of a 10 6 M HCI solution is diluted to 200.0 mL, what is the final molarity of this acidic solution? a 1.33 M b. 265 M c 398 M d. 3.53 MM 9 Which of the following is not a part of the kinetic-molecular theory ? Atoms are neither created nor destroyed by ordinary chemical reactions. b. Attractive and repulsive forces between gas molecules are negligible c Gases consist of molecules in continuous, random motion d. The volume occupied by all of the gas molecules in a container is negligible compared to the volume of the container. 10 A sample of gas (24.2 g) initially at 4.00 atm was compressed from 8.00 L to 2.00 L at constant temperature. What was the gas pressure after compression? a 1.00 atm b. 2.56 atm c. 2.00 atm d. 16.0 atm 11. An unknown gas composed of homonuclear diatomic molecules effuses at a rate that is only 0.355 times that of O2 at the same temperature. Calculate the molar mass of the unknown, and identify it. a 254 g, I2 b. 28.0 g, N c. 28.1 g, Co d. 70.9 g. Cl 12. Of energy, work, enthalpy, and heat, which are state functions? a energy and enthalpy b. work c. work and heat d. energy and heat

Answer 1

622 ven Volume g Mag 1.57 L 3.87 mole Na, p x 3.83 mase mele = 11-6123 mole eloni velume 11. 6123 2-51 M Thonk yeu Plespe Pos ote gn sees eutione seHeaiedy