2. Which of the following statements is true (explainwhy)?
a. A sample of oxygen gas at 273K will have a higher urms than asample of oxygen at 1000K
b. A sample of hydrogen gas at 273K will have more molecules thatare able to achieve a a speed of 2000m/s than a sample of oxygengas at 1000K (number of moles remaining constant)
c. A sample of hydrogen gas at 273K will have a higher urms than asample of the same gas at 1000K
d. None of these statements are true
e. All of these statements are true

3. Which of the following statements regarding energy entering asystem is false (explain why)?
a. Energy cannot enter or leave a system from the surroundings inthe case of an isolated system
b. Both heat (q) and work (w) would require a positive sign
c. Heat (q) would require a negative sign, while work (w) wouldrequire a positive sign
d. All of these statements are true
e. All of these statements are false

4. Recall that the internal energy of a system is a statefunction and depends only on temperature. In the isothermalexpansion of an ideal gas, which of the following statements aretrue (explain why)?
a. The gas absorbs energy from its surroundings
b. The gas does work
c. The change in internal energy remains constant
d. Only a and b are true
e. All of these statements are true

5. The electron configuration for Ge is [Ar] (3d^10)(4s^2)(4p^2)What is the maximum number of electrons that can have an ml valueequal to 0 (show the calculations)?

a. 8

b. 15

c. 16

d. 32