Limiting Reactants: on a video my teacher made, he said 4 H2 + 100 O2 = 4 H2O

However, later he said,

15 H2 + 12 O2 = 7 H2O

Wouldn’t it be 15 H2O because H2O consists of H2 and a single O atom? In the equation there are 15 H2 and 24 single O atoms. Did my teacher make an error, or did I?

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

4d^55s^1 ( third choice)