题目内容

Which gas sample has the greatest volume at STP? ( )

A. 10.0 g Ar
B. 10.0 g Kr
C. 10.0 g Xe
D. None of the above (They all have the same volume.)

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A chemical system produces 155 kJ of heat and does 22 kJ of work. What is ∆E for the surroundings? ( )

A. 177 kJ
B. -177 kJ
C. 133 kJ
D. -133 kJ

Which set of three quantum numbers does not specify an orbital in the hydrogen atom? ( )

A. n = 2; l = 1; ml = -1
B. n = 3; l = 3; ml = -2
C. n = 2; l = 0; ml = 0
D. n = 3; l = 2; ml = 2

Which should have the largest difference between the first and second ionization energy? ( )

Al
B. Si
C. P
D. Cl

Which molecule is nonlinear? ( )

A. SO2
B. CO2
C. HCN
D. NO