How many moles are represented by each of these samples? (a) 170.0 g Fe2O3
(b) 12.0 mg NO2
(c) 1.6 ✕ 1016 molecules of BF3

the answer is learned

since electrons are negative the answer is neagtaive

here is table 2-2:

country

percent of eligible voters that voted

rank

united states

44.9%

138

canada

60.1%

107

costa rica

84.6%

14

hungary

66.9%

82

japan

57.0%

118

egypt

27.7%

159

south africa

85.5%

10

ans is no, the data set cannot be plotted as a single circle graph