SAT Subject Test Chemistry,10 edition

41 . Which of the following elements would have the lowest first ionization energy?

(A) Fluorine

(B) Oxygen

(C) Nitrogen

(D) Carbon

(E) Boron

42 . Which of the gases below has the greatest average kinetic energy at 25°C and 1 atm?

(A) Ne

(B) Ar

(C) CO

(D) CO 2

(E) All these   gases   would   have    the same    average kinetic energy  under   these   conditions.

43 . Which of the following is the most appropriate definition of the normal boiling point of a
liquid?

(A) The temperature at  which   the liquid  boils

(B) The pressure    at  which   the liquid  boils   at  100°C

(C) The temperature at  which   the liquid’s    vapor   pressure    is  1   atm

(D) 100°C

(E) Dependent   upon    the pressure    above   the liquid

44 . Sodium-24, a radioactive isotope used medically in blood studies, decays by beta decay
and has a half-life of 15.0 hours. What is the product of the radioactive decay of Na-24?

(A) F-20

(B) Ne-24

(C) Ne-23

(D) Na-23

(E) Mg-24