A chemical reaction is run in which 271 Joules of heat are absorbed and 313 Joules of work are done on the system. Calculate the change in the internal energy of the chemical system.

14 days is the half-life of phosphorus-32

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

the answer is c.the valence of the atoms combine .