(A) 50 mL
(B) 100 mL
(C) 150 mL
(D) 200 mL
(E) 250 mL42 . All members of Group IA have similar reactivity because
(A) they have the same number of protons
(B) they have the same number of electrons
(C) they have similar outer-shell electron configurations
(D) they have valence electrons with the same quantum numbers
(E) they have the same number of neutrons43 . If one mole of a gas originally at STP is placed in a container where the pressure is doubled
and the temperature in K is tripled, what is the new volume in L?
(A) 2.2
(B) 5.6
(C) 7.5
(D) 11.2
(E) 33.644 . Chlorophyll, a green pigment involved in the light reactions of photosynthesis, consists of
2.4312 percent Mg. If you are given a 100 g sample of chlorophyll, how many atoms of Mg
will it contain?
(A) 6.02 × 10^22 atoms
(B) 6.02 × 10^23 atoms
(C) 6.02 × 10^24 atoms
(D) 6.02 × 10^25 atoms
(E) None of the above